Showing papers on "Gas heater published in 2000"

Method and device for applying a coating

Abstract: An apparatus and method for applying a coating to an article uses a nozzle having a converging portion and a diverging portion downstream thereof forming a throat therebetween. A gas inlet is upstream of the converging portion of the nozzle for receiving a supply of high pressure gas and a powder inlet introduces a powdered feed material into a gas stream in the nozzle downstream of the throat. A gas heater heats the gas stream from the gas inlet upstream of the converging portion.

High-temperature gas heater

Abstract: The gas burner has a combustion chamber (4) covered by a conical or bell-shaped recuperator (3), acting as an exhaust gas an air heat exchanger. The diameter of the recuperator increases in its axial direction. The combustion chamber is at least partly arra in an inner chamber formed by the recuperator. Preferably, the recuperator has a separation wall (16) with projections (17) on b sides between outer (5) and inner (23) walls.

Brayton or brayton-rankine combined cycle with hot-gas recirculation and inverse mixing ejector

Abstract: A gas turbine system consists of a semi-closed cycle comprising: a compressor (1) connected to the atmosphere and driving a mixer-ejector (2, 4); a mixer-ejector (4) receiving the compressor air and driving recirculated hot gas to a combustor (8); a combustor (8); a turbine (5) expanding a part of the hot gas from the combustor (8) and recirculating it to the mixer-ejector (3, 4); a further turbine (6) expanding the rest of the hot gas into the atmosphere. Alternatively, the system consists of a closed cycle comprising: a gas cooler (9); a compressor (1) connected to the gas cooler (9) and driving a mixer-ejector (2, 4); a mixer-ejector (4) receiving the compressor air and driving recirculated hot gas to a gas heater (8); a gas heater (8); a turbine (5) expanding a part of the hot gas from the gas heater (8) and recirculating it to the mixer-ejecter (3, 4); a further turbine (6) expanding the rest of the hot gas into the gas cooler (9).

Method for preparation and supply of therapeutic gas mix and device for its embodiment

Abstract: FIELD: medical devices, in particular, for curing, first aid, rehabilitation after surgery, and so on. SUBSTANCE: method involves proportioning and mixing compressed gases, their heating and adding inhalation doping agents and subsequent processing in recycling mode with oxygen additions. Gas mix is supplied as either atmospheric air or as prepared gas mix of specific content. Inhalation doping agents are added by means of blowing heated gas mix through inhalation materials. Prepared mix is used as gas mix for breathing using inhalation mask or as gas environment in helmet, intensive treatment unit or under local cover. Corresponding device has inhalator, which is embedded into mix chamber, which is located in gas channel between therapeutic tank and gas heater, which is designed as controlled transmission-type heat exchanger. Output unit may be designed as inhalation valve which is connected to air or be connected to additional gas mix flask, which has reduction valve and constrictor, or to additional oxygen flask. Main gas channel between gas mix flask and heat exchanger may include forced breathing bellows or compressor with periodic action receiver and maximal pressure reduction unit, which are equipped with single turn gas mix supply and regulators of rate and speed of its actuation. EFFECT: increased efficiency of inhalation. 21 cl, 5 dwg

Device and method for adjusting the rotational speed of a fan of a gas heater, especially a gas boiler

Abstract: of EP0981025Experimentally derived air flow rates for different exhaust hose lengths are stored in an electronic memory (28) and a temperature comparator (32) is fed with the reference value (33) and actual output value (39) from the heat exchanger (29), and the fan (40) is controlled by an output signal (43). The gas supply to the burner is controlled by a valve (30) and the fan speed by a regulator (41) and the comparator system matches the fan speed, hence the air flow, to the gas burning rate for the length of exhaust hose used.

Energy-saving combined high-elasticity cyclone drier

Abstract: The high-elasticity combined energy-saving swirling flow drying equipment includes fan, gas heater, air-flow drier, swirling flow drier, primary cyclone separator, secondary cyclone separator and star feeder, inwhich a fan is connected with gas heater, another fan is connected with gas heater, the cyclone separator is set up between air-flow drier and swirling flow drier, and the star feeder is set up between the primary cyclone separator and swirling flow separator. Said invention is high in drying efficiency, low in energy consumption, and its operation elasticity is large.

Re-heating device for gas gas-heater in discharging smoke treating facility

Abstract: PROBLEM TO BE SOLVED: To provide a re-heater for a gas gas-heater in a discharging smoke treating facility, which is capable of heating exhaust gas effectively by the high temperature of heat medium, minimizing a pressure loss in the re-heater of the gas gas-heater and contriving the saving of a cost for the facility, by a method wherein the optimum heat transfer surface for a naked pipe is constituted of a simple structure without providing with any steam gas heater a soot blower or the like SOLUTION: A heat transfer pipe, arranged at the inlet port of a re-heater 4 is constituted of a naked pipe 13, not finned and the naked pipe 13 is arranged at the side of a mist eliminator 14 so as to be installed differently and separately from a finned pipe 9 The re-heater of the gas gas-heater is so constituted that a part of heat medium is supplied to the naked pipe 13 from an introducing pipe 15, branched from the half way of a communicating pipe 6, supplying the heat medium to the finned pipe 9, while the heat medium, supplied into the naked pipe 13, is guided out of a guide-out pipe 16, joined into the half-way of a communicating pipe 5, through which the heat medium, supplied to the finned pipe 9, is guided out

Langzeiterfahrungen bei Betrieb, Instandhaltung und Optimierung des Wärmeverschiebesystems in einer Rauchgasentschwefelungsanlage

Abstract: This paper deals with the long-time operating experience with a heat shifting systm in the flue gas desulfurization system of the 480 MW Unit 8 of Grosskraftwerk Mannheim AG (GKM). At first, the efforts were focussed on fighting the critical corrosion in the scrubbed gas heater. The casing of the scrubbed gas heater was clad with a high-quality material. All bundles of the first heat exchanger stage were completely redesigned in such a was that only very corrosion-resistant materials were used. Serious corrosion in the stainless steel tubes of the second and third scrubbed gas heater stages required extensive modifications on the water-side confirguration of all three heat exchanger stages. Damage frequency, damage extent, repair methods and improvement with respect to the plastic hoses will be described.

Gas heater with grill

Abstract: PROBLEM TO BE SOLVED: To provide a gas heater with a grill capable of easily cooking different food stuffs without caring the control of calorific force of a heat source and heating time. SOLUTION: The gas heater with a grill 1 has a grill case 14 for containing and heating food stuffs, burners as a heating source for heating the inner space of the grill case 14, a cooking selection key 2 for indicating cooking menu and for selecting desired cook, a control section for controlling the burners according to the desired cook selected by the cooking selection key 2 to cook with a fixed calorific force and heating time.

Method and apparatus for detecting wind pressure of gas heater

Abstract: PURPOSE: A method is provided to prevent the incomplete combustion in a combustion chamber and to decide the ignition by the wind pressure led into the combustion chamber. CONSTITUTION: A detector of wind pressure includes: a combustion chamber(21) fixed on the upper face of a ventilating fan to burn the mixed gas of air required to burn with gas as fuel; a burner(22) fixed to the combustion chamber to ignite a flame to burn the mixed gas; a gas pipe(24) for feeding gas to the burner; an absorbing pipe(25) absorbing air required to burn; and a gas valve(23) provided on the gas pipe to selectively open and close a pipe. A common contact of a switching unit is automatically moved to a second contact point from a first contact point in case of lake of combustion air.

Gas heater for boiler flue gas processing equipment

Abstract: PROBLEM TO BE SOLVED: To provide a gas heater for boiler flue gas processing equipment in which a heat transfer tube is effectually cleaned during operation of the equipment without provision of a shot cleaning apparatus and a soot blower, etc., and a heat exchange rate following an increase of pressure loss is prevented previously from being deteriorated. SOLUTION: The inside of a duct casing 12 is divided into a plurality of chambers 15 with a partition wall 14 in a widthwise direction perpendicular to a flow direction of combustion waste gas, and dampers 16 are provided at an inlet and an outlet of each chamber 15 defined with the partition wall 14. A cleaning apparatus is provided on an upper portion of each chamber 15 for injecting cleaning water to the heat transfer tube to clean the heat transfer tube 13 for each chamber in order.

Carbon black production process

Abstract: FIELD: carbon materials. SUBSTANCE: carbon black is prepared via pyrolysis of natural gas in regeneration-type gas heater, which is operated by way of heating gas heater head with crude hydrocarbon combustion products followed by passing natural gas through head and pyrolyzing preheated gas. Heating of head is conducted at alternated consumption of combustion products and gradual decrease of the air excess factor. Characteristics of changes in consumption and composition of combustion product are chosen empirically from condition of maximum utilization in heating cycle of heat releasing from burn-out of head deposits. Subsequent gas heater head heating cycles are conducted under the same conditions. Pyrolysis products are cooled and carbon black separated. Invention is intended for use in rubber, varnish-and-paint, and polygraphic industry. EFFECT: considerably reduced fuel consumption. 2 dwg, 3 ex

Method for electric-power supply of gas-distribution station

Abstract: FIELD: gas industry, applicable in reconstruction and modernization of gas- distribution stations of gas mains. SUBSTANCE: the method consists in heating of heat-transfer agent of the gas heater by fuel gas, generation of electric power by a self-sustained power source by using the pressure differential of the pressure-reduction unit, use of this power for station auxiliaries and additional heating of heat-transfer agent by the overcurrent power of the power source. EFFECT: enhanced efficiency. 1 dwg

Device for and method of concentrating chemical substances for semiconductor fabrication

Abstract: A device for concentrating chemical substances for use during the fabrication of a semiconductor device uses a sample container for holding chemical substances. A feed tube in gas flow communication with the sample container introduces a carrier gas. A vapor outlet in gas flow communication with the sample container discharges a mixture of a vapor and the carrier gas. A sample heater, disposed above and apart from the sample container, heats the chemical substances to a first predetermined temperature. A gas source supplies the carrier gas, and a gas heater, in gas flow communication with both the gas source and the feed tube, heats the carrier gas to a second predetermined temperature. A condenser in flow communication with the vapor outlet produces a liquid from the vapor, and a collecting container collects the liquid.

Confirmation Test on Acoustic Vibration of Multistage Tubular Heat Exchanger.

Abstract: We experienced unusual acoustic vibration in the operation of in-line array tubular heat exchangers named gas heater. This vibration mode was not one dimensional in the direction perpendicular to gas flow and could not be vanished by inserting baffle plates into the tube bundle along the gas flow. So we had to confirm acoustic vibration characteristics using 3-dimensional air flow scale model. Here, we report this test results about multi-stage gas heater and some countermeasure methods. Especially we discovered that unusual acoustic vibration mentioned above did not appeared in the case of some staggerd tube array having same heat transfer characteristics as in-line tube array.

Crude oil heating energy-saving tank

Abstract: The utility model relates to a heating device for drawing oil tanks and oil storing tanks of individual wells of oil fields, particularly a crude oil heating energy-saving tank The utility model provides a crude oil warming device which can save energy The warming device which is arranged on an oil tank of the energy-saving tank and is composed of an electric heater, a gas heater and a solar heater is automatically controlled by an electric control part

Reheater of gas gas-heater in flue gas treating apparatus

Abstract: PROBLEM TO BE SOLVED: To reduce an installation cost by minimizing the increase of a pressure loss in a reheater of a gas gas-heater by a simple structure by a method wherein a bare pipe is arranged to an inlet part of the reheater installed on a downstream side of a mist eliminator on an outlet side of a wet flue gas desulfurizing apparatus, and a heat transfer pipe with a fin is separately arranged inside a casing. SOLUTION: A flue gas in a saturated state exhausted from a wet flue gas desulfurizing apparatus, after passing through a mist eliminator(ME), is allowed to flow into a reheater 4 of a gas gas-heater 2 in a slightly wet state. It is heated by a bare pipe 13 arranged separately on the ME side to make a dry state, allowed to pass through an area wherein a pipe with a fin 9 of the reheater 4 is arranged, and a dust or the like is prevented from sticking and depositing among fins of the pipe with the fin 9. Though dust or the like is slightly stuck to a surface of the bare pipe 13 since exhaust gas before drying passes, there is no accumulation of that which has been grown large, and an optimum heat transfer surface can be constituted as the bare pipe 13. Thereby, increase of a pressure loss in the reheater 4 of a gas gas-heater is minimized, and an installing cost can be reduced.

Method and apparatus for producing iron

Abstract: PROBLEM TO BE SOLVED: To provide the method and apparatus capable of producing a reduced iron without using a reformer. SOLUTION: A fluidized bed furnace is composed of two sets of a fluidized bed furnace 1 and a second fluidized bed furnace 2. A first circulating course 7 is formed from the first fluidized bed furnace 1 again to the first fluidized bed furnace 1 through a gas heater 6, the first fluidized bed furnace is connected to the second fluidized bed furnace 2 through a connecting path 3, and a second circulating coarse 15 is formed from the second fluidized bed furnace 2 again to the second fluidized bed furnace 2 through a gas heater 14. A mixing combustion device 9 for obtaining carbon monoxide and hydrogen by burning hydrocarbon-containing gas with oxygen-containing gas, is provided. A natural gas supplying path 10 and an oxygen gas supplying path 11 are connected with the mixing combustion device 9 and the one end of a supplying path 17 for supplying the carbon monoxide and the hydrogen is connected to the mixing combustion device 9 and the other end of the supplying path 17 is connected to the first circulating route 7. The other end of a supplying path 18 branched from the supplying path 17 is connected to the second circulating course 15 and a natural gas supplying path 19 is connected to the second circulating route 15.

Gas heating device

Abstract: PROBLEM TO BE SOLVED: To provide a gas heater device capable of avoiding hazardous state in which a burner and a grill are erroneously used or a heater device other than that expected is ignited. SOLUTION: An operating knob 5d for a grill is formed into a shape of 'a fish'. The size of each of the operating knobs 5a, 5b and 5c for the burners is made different in sequence, in response to a capability of each of the burners, or the arrangement of each of the operating knobs 5a, 5b and 5c for the burners at a front panel 3 is made to correspond to a two-dimensional arrangement of each of the burners 1a, 1b at the top surface of a main body 2 of the heater.

Burner structure for portable gas heater

Abstract: PROBLEM TO BE SOLVED: To prevent a mixed gas composed of a combustible gas and air from being discharged to the outside in an unburned state by decreasing the speed of the mixed gas to an appropriate burning velocity. SOLUTION: In a burner structure, a projecting section 33a which is protruded toward a mixing tube 30 from which a mixed gas is discharged is formed at the area facing the mixing tube 30 on an inner cup 33 attached to the top section of the internal surface of a burner head 31. The mixed gas discharged from the mixing tube 30 comes into collision with the projecting section 33a and is decelerated to an appropriate gas speed.

Outdoor gas heater. (Machine-translation by Google Translate, not legally binding)

Abstract: Outdoor gas heater for those who own the hearth located at a high point of the heater radiating the heat there generated in a wide radius, characterized because it is constituted by two main parts such as the staggered base (1) formed by a piece preferably metallic similar to an inverted "L" on whose side the metal bar (2) that supports the upper part of the heater departs, while on the smaller side the mudguards (3a and 3b) that cover the respective wheels (4a and 3b) are detached. 4b), a rectangular grid (5) extends from the lower end of the step, from whose end ends emerge respective lugs (6a and 6b), while at the beginning of said grid there are mooring plates (7a and 7b) joined to the lateral extensions of the stepped base, the upper body is formed by the heater hearth (14) and is made up of two colindors, the lower one (14a) being of smaller diameter than the upper one (14b) and placing the regulator controls formed by an automatic lighter (16) and a gas passage regulator (15) on the lower cylinder (14a), crowning these two cylinders, the bell (17) formed by a concave circular plate with the convex part is placed outward. (Machine-translation by Google Translate, not legally binding)

Automatic temp.-adjustable device for gas heater

Abstract: The utility model discloses a temperature adjustment device. The utility model is composed of a water pan, a pressure diaphragm, a gas entering component, and a valve plug, wherein, the pressure diaphragm is arranged in the water pan, a water collecting channel is arranged below the pressure diaphragm, and a gas guide path is arranged on the valve plug. As a result, water quantity is used for controlling gas entering quantity so that water temperature is adjusted.

Gas heater having a gas burner with cullet medium and propagation plate

Abstract: A gas heater includes a gas burner system having a gas burner engulfed by a cullet that diffuses the gas flowing from the burner. The cullet is preferably broken tempered glass and is otherwise chosen from among materials which are non-moisture absorbent. The cullet and burner may be contained within a burner box having a propagation plate covering with slots to specifically locate the flame to avoid contact with an artificial log set for safe, efficient operation. The burner system immediately produces a dancing, multi-colored, natural-looking flame while eliminating instance of pop and flash-back. The cullet insulates the burner and therefore prolongs its life, as well as allows a relatively maintenance free, clean burning and cost effective burner system compatible with different types of gases.

Boiler has burner comprising mouth inside who flows mixture of fuel/combustors

Abstract: The gas heater has a burner (1) with a mouth (3), at the interior of which flows a mixture of fuel/combustors. At the proximity to the nose (4) of the mouth are members (5) to cause a return of the products of combustion back to the mouth. An Independent claim is also included for the use of boiler

Apparatus for inerting gable top carton head space and method therefor

Abstract: A head space inserting system is used in a packaging machine for forming, filling and sealing packages. The inerting system directly introduces an inerting gas into the head space of the formed package subsequent to filling and prior to sealing. The inerting system includes an inerting gas source, an inerting gas heater to heat the inerting gas and an inerting gas nozzle. The inerting gas nozzle is disposed within the form, fill and seal packaging machine to introduce the inerting gas directly into the head space of the packages. The nozzle is further disposed between the top heating station and the sealing station. A method for inerting an atmosphere in the package head space is also disclosed.

Flexible tube for supplying gas to gas cookers or gas heaters, has external and internal sheaths separated by a fabric reinforced framework

Abstract: The flexible tube (20) includes an internal sealing sheath, with an external sheath covering the internal sheath, and electric wires (23,24) disposed between the two sheaths, and which are connected to an electronic control unit (11) connecting into the kitchen appliance or the gas heater to the security valve (30) at the exit of the gas feed system. There is also a reinforced fabric frame between the sheaths for mechanically reinforcing this pipe.

Low voltage gas heater control and operation device

Abstract: Low voltage gas heater control and operation device, made up of a burner (5), supplied with gas via piping (6); a circuit that merges with a gas electro valve (8), activated preferably by a mobile core (9) and a spool (10) with a transition (11) and a spring or lever (12); the electro valve (8) is controlled by a control circuit (13) powered by low voltage batteries (14). It incorporates a spark electrode (15), a call detector (16) and a water demand detector (17) installed in the water circuit, in such a way that the spark acts directly on the burner (5) once a demand for hot water has been registered.