The invention discloses an isothermal conversion process of high-concentration carbon monoxide and a system thereof, and solves the problems of long procedure period, high system resistance and short in catalyst life in the existing conversion process. According to the adopted technical scheme, raw material gas flows through a raw material gas separator, so that water carried by the raw material gas is separated; then the raw material gas is filtered by a filter, and then is introduced into a shell side of a gas cooling conversion reactor to be preheated; the preheated raw material gas is introduced into a water cooling conversion reactor I to carry out conversion reaction; steam pocket byproduct steam is used for removing reaction heat of the conversion reaction; conversion gas out of the water cooling conversion reactor I is returned to the shell side of the gas cooling conversion reactor to preheat the raw material gas in the shell side,, so s to remove the reaction heat and continue to carry out conversion reaction; the conversion gas out of the gas cooling conversion reactor is further subjected to heat recycling, and after the condensed liquid is separated, the conversion gas is subsequently introduced into the downstream process. The isothermal conversion process of high-concentration carbon monoxide is simple in process, high in system reliability, low in methanation side reaction, short in process, low in system resistance, long in service life of catalyst, and low in equipment investment and operation cost.

Isothermal conversion process of high-concentration carbon monoxide and system thereof

The invention discloses a FLiNaK fused salt and a preparation method, a reactor and a preparation device thereof. The contents of oxygen, sulfur, chlorine, silicon, nickel, iron, calcium, aluminum, barium, chromium, cobalt, cadmium, manganese, magnesium, copper, phosphorus, lead, zinc, vanadium, titanium, molybdenum, tungsten, zirconium, strontium, and stannum in the FLiNaK fused salt is lower than 0.01%, and the total content of impurity elements is not more than 0.1%; and the mass ratio of LiF, NaF and KF is 29.3:11.7:59.0. The preparation method includes mixing and drying; (2) heating and melting; (3) performing bubbling treatment with hydrogen for more than 8 hours at the temperature of 500-600 DEG C; (4) performing the bubbling treatment on the mixture gas of hydrogen fluoride and hydrogen with the ratio of 1:(4-9) for more than 36 hours at the temperature of 500-550 DEG C; and (5) performing retreatment with hydrogen. The FLiNaK fused salt has excellent material compatibility with Hastelloy N, GH3535 and SUS316Ti alloy.

FLiNaK fused salt and preparation method, reactor and preparation device thereof

The invention discloses a coal-to-natural gas conversion device and conversion method The device comprises: a raw material filter, a combined conversion reactor, a boiler feed water preheater, a demineralized water preheater, a water cooler and a gas-liquid separator that are connected in order The upper part inside the combined conversion reactor is an isothermal catalyst bed, the lower part isan adiabatic fixed catalyst bed, and the middle part is a spiral wound heat exchange tube The outlet of the raw material filter is connected to the inlet of the spiral wound heat exchange tube, theoutlet of the spiral wound heat exchange tube is connected to the inlet of the isothermal catalyst bed, and the outlet of the adiabatic fixed catalyst bed is connected to the boiler feed water preheater The scheme adopted by the invention reduces the setting of conversion reactor, reduces pressure drop, and effectively simplifies the heat exchange process and equipment occupation

Coal-to-natural gas conversion device and conversion method

The invention relates to a reaction device and method for manufacturing propene by utilizing catalytic dehydration of methanol. Raw material flow enters a raw material channel of a heat exchanger and a reactant coming out of a reactor enters a reactant channel of the heat exchanger; the reactant undergoes heat exchange with the raw material flow to preheat the raw material flow; the preheated raw material flow enters a heat exchange area of the reactor and undergoes heat exchange warming and then enters a reaction area filled with a catalyst to undergo a reaction; the raw material flow reacts in the reaction area and releases heat, the released heat heats a preheating area, and the reactant after the reaction flows into the reactant channel of the heat exchanger to preheat the raw material flow in the raw material channel. Compared with the prior art, on the premise that no cooling medium is used, the heat released out of the reaction area can be removed continuously, so that on the condition of the same bed temperature rise, the inlet concentration of the methanol is improved, the methanol conversion speed is accelerated, the recycling of the reaction heat can be achieved, and the energy utilization efficiency is enhanced.

Reaction device and method for manufacturing propene by utilizing catalytic dehydration of methanol

The invention relates to an isothermal reactor, and a device and a method which are used for methanation reaction using the isothermal reactor. The isothermal reactor comprises an external cylinder body, an internal cylinder body, a plurality of heat exchange tubes, a catalyst filling plate, a raw material gas inlet pipe, a raw material gas outlet pipe, a water vapor inlet pipe, and a water vaporoutlet pipe; a lower separating plate is arranged in the external cylinder body horizontally; the internal cylinder body is arranged on the upper part of the lower separating plate; an upper separating plate is arranged in the internal cylinder body horizontally; a sealed catalytic reaction chamber is composed by the upper separating plate, the lower separating plate, and the side wall of the internal cylinder body; a sealed first chamber is composed by the upper separating plate and the top of the internal cylinder body; a sealed second chamber is composed by the lower separating plate and the bottom of the external cylinder body; and a gas channel is formed between the external cylinder body and the internal cylinder body. The isothermal reactor, and the device and the method are capableof realizing low temperature circulation-free synthesis of methane, and problems in the prior art that technology process flow is long, circulation gas amount is large, energy utilization rate is low, and reactor temperature is high in conventional methanation technology are solved.

Isothermal reactor, and device and method used for methanation reaction using isothermal reactor

The invention relates to a methanation reaction process, and is used for solving the problems that existing methanation reaction processes are complex and are long in flows, system temperatures are instable to control and catalysts are easy to inactivate. The methanation reaction process comprises the steps that the raw gas is sent to a desulfurization tank to be desulfurized after undergoing gas-liquid separation in a gas-liquid separation tank and then is sent to a feed gas heater to exchange heat with the reaction gas coming out of an isothermal reactor to be heated, the heated raw gas is sent to the isothermal reactor to react and the reaction gas after reaction is sent to the feed gas heater to exchange heat with the raw gas to be cooled and then is sent to a low-temperature adiabatic reactor to further fully react, thus obtaining the methane gas. The process has the advantages of extremely simple flow, reliability in control, low equipment investment, low operating cost, energy conservation and consumption reduction and capability of obtaining high-grade steam.

Methanation reaction process

The invention relates to a carbon monoxide shifting process, and is used for solving the problems that existing carbon monoxide shifting processes are complex and are long in flows, system temperatures are instable to control and catalysts are easy to inactivate. The carbon monoxide shifting process comprises the steps that the raw gas is sent to a gas filter to be filtered after undergoing gas-liquid separation in a gas separator and then is sent to a steam mixer to be mixed with medium pressure steam, the gas mixture is sent to a gas preheater to exchange heat with the reaction gas coming out of an isothermal reactor to be heated, the heated gas mixture is sent to the isothermal reactor to react, so that the reaction conversion rate of the raw gas is above 90%, and the reaction gas after reaction is sent to the gas preheater to exchange heat with the gas mixture to be cooled and then is sent to a low-temperature adiabatic reactor to further fully react, thus obtaining the shift gas. The process has the advantages of extremely simple flow, reliability in control, low equipment investment, low operating cost, energy conservation and consumption reduction and capability of obtaining high-grade steam.

Carbon monoxide shifting process

The utility model relates to a carbon monoxide conversion system, and aims to solve the problems of complexity, long flow, unstable temperature control and easily inactivated catalyst of an existing carbon monoxide conversion system. According to the technical scheme, the system comprises a gas separator, a gas filter, a steam mixer and a gas preheater which are connected sequentially, wherein steam mixed gas is connected with an isothermal reactor by means of a tube pass or shell pass of the gas preheater; the isothermal reactor is connected with an adiabatic reactor by means of the tube pass or shell pass of the gas preheater. The system has the advantages of extremely simple flow, reliable control, low equipment investment, long service life of catalyst, low operation cost, energy conservation, consumption reduction, high-grade steam byproduct availability.

Tang Fengjin

Papers

Methanation reaction process

Carbon monoxide shifting process

Shifted gas reaction system