The invention discloses an automatic continuous energy-saving firing production line for ceramic rock plates. The production line comprises a rapid drying kiln, a glaze line system and a kiln; the kiln is sequentially provided with a smoke discharge section, a firing section, a cooling section and a final cooling section in the plate blank conveying direction; the cooling section is divided into aquenching section, a slow cooling section and a direct cooling section; a high-stability and high-efficiency high-temperature system, a low-temperature waste heat circulation system and a smoke heatexchange system are arranged at the top of the kiln; the air inlet end of the waste heat fan communicates with the slow cooling section; and the air outlet end of the waste heat fan respectively communicates with the middle section and the rear section of the rapid drying kiln. The high-stability and high-efficiency high-temperature system, the low-temperature waste heat circulation system and thesmoke heat exchange system are used for reasonably distributing heat of media at different temperatures of all sections and performing heat exchange on smoke; the defects that waste smoke used for rapid drying is difficult to clean and poor in environment are overcome; the energy utilization rate is increased through the system; and fuel consumption of the whole line is reduced.

Automatic continuous energy-saving firing production line for ceramic rock plates

The invention belongs to the field of domestic porcelain production, and particularly discloses a domestic porcelain continuous production system and method based on waste heat graded utilization. Thedomestic porcelain continuous production system comprises a dryer front box, a dryer rear box, a kiln and a heat exchanger, wherein the dryer front box is used for blank demoulding, and the dryer rear box is used for dehumidifying a demoulded blank; the kiln is used for firing the demoulded and dehumidified blank to obtain domestic porcelain, smoke generated during firing comprises waste heat smoke and moisture removal smoke, the waste heat smoke is used for providing heat for blank dehumidification of the dryer rear box to obtain moisture-containing smoke, and the moisture-containing smoke enters the heat exchanger; and the dehumidification smoke enters the heat exchanger from the front part of the kiln, the heat exchanger heats dry air and preheats low-temperature water by heat of the dehumidification smoke and the moisture-containing smoke, the heated dry air enters the dryer front box, and heat is provided for blank demoulding of the dryer front box. According to the invention, uninterrupted continuous production of domestic porcelain is realized, and the production efficiency and the energy utilization rate are increased.

Domestic porcelain continuous production system and method based on waste heat graded utilization

The invention discloses a comprehensive utilization system of waste heat of a kiln. The comprehensive utilization system comprises a formation drying line, an enameling drying line, a before-kiln lineand a kiln line. The kiln line is provided with a preheating area, a firing area, a rapid cooling area, a slow cooling area, a direct cooling area and a final cooling area, wherein a primary smoke discharging pipeline used for delivering smoke to a desulfurizing tower is mounted in the preheating area, and a smoke heat exchanger used for heating combustion-supporting air in the firing area is mounted on the primary smoke discharging pipeline; a secondary smoke discharging pipeline is mounted on the preheating area, a fan is mounted on the secondary smoke discharging pipeline, and the secondary smoke discharging pipeline is connected to the enameling drying line and the before-kiln line; and a hot air pipeline is mounted in the slow cooling area, a fan is mounted on the hot air pipeline, the hot air pipeline is connected to the formation drying line, and an air return pipeline is connected between the final cooling area and the direct cooling area. By adoption of the comprehensive utilization system, systematic recovery and gradient utilization of all waste heat generated in the tile firing process of the kiln are achieved, the comprehensive utilization rate of energy is remarkablyincreased, and the comprehensive utilization device is not simply a waste heat recovering device.

Comprehensive utilization system of waste heat of kiln

The utility model discloses a system is used multipurposely to kiln used heat, dry line and kiln line before the dry line of shaping, the dry line of glaze, kiln, the kiln line has preheating zone, firing zone, rapid cooling district, slow cooling zone, direct -cooled district and whole cold -zone, and a exhaust pipe who carries flue gas to desulfurizing tower is installed to preheating zone wherein, installs the gas gas heater who is used for heating the combustion -supporting wind of firing zone on the exhaust pipe, secondary exhaust pipe is installed to the preheating zone, and secondary exhaust pipe facial make -up has the fan, and secondary exhaust pipe is connected to dry line before the dry line of glaze and the kiln respectively, and slow cooling zone installs hot -air pipes, and the hot -air pipes facial make -up has the fan, and hot -air pipes is connected to shaping drying line, is connected with the return air duct between whole cold -zone and the direct -cooled district. This system has carried out systematic recovery and gradient utilization to all used heat that the kiln ceramic tile burnt till the in -process, and it lands to show has improved the comprehensive utilization ratio of the energy, but not single waste heat or waste heat recovery unit.

Yang Peizhong

Papers

Comprehensive utilization system of waste heat of kiln

System is used multipurposely to kiln used heat