1077 results about "Syngas" patented technology

The invention discloses a production method and a production device of an energy-saving sustainable aviation fuel, and the production method comprises the following steps: S1, adsorbing carbon dioxide in air by using an adsorbent, desorbing through high-temperature carrier gas, and cooling and compressing the desorbed carbon dioxide; s2, carbon dioxide and deionized water are preheated and then electrolyzed, and synthesis gas and oxygen are generated; s3, after the synthesis gas is compressed, performing Fischer-Tropsch reaction to generate a mixture of Fischer-Tropsch oil wax, light hydrocarbon and water, cooling and separating, and returning the Fischer-Tropsch reaction heat to preheat the synthesis gas; s4, pressurizing the Fischer-Tropsch oil wax, mixing the Fischer-Tropsch oil wax with hydrogen, carrying out hydrofining reaction to generate a gas-liquid isomerous oil-gas mixture, cooling and separating, and recycling heat energy of a product to And S5, after gas-liquid separation, preheating a liquid phase, carrying out rectification operation, separating and cooling to obtain a sustainable aviation fuel product. By recovering the heat in each link, the heat is efficiently utilized, and the energy-saving performance of production is improved.

This invention discloses a method for preparing a CuZnAlGa-based layered double hydroxide (TLH)-derived catalyst for methanol production from carbon dioxide-rich syngas. Using Cu, Zn, Al, and Ga metal salts as precursors, Na₂CO₃ and NaOH as precipitants, and a mixed alcohol-water solution as an auxiliary solvent, co-precipitation is performed under controlled temperature and pH to obtain a LDH-like catalyst precursor. After high-temperature calcination and in-situ reduction in a hydrogen atmosphere, a layered framework structure of Cu nanoparticles immobilized by oxides is obtained. The LDH-like structure provides lattice confinement, preventing Cu particle aggregation, and the interaction between Cu and the oxides enhances the catalyst surface's adsorption capacity for CO and CO₂, thereby improving the activity and stability of methanol production from carbon dioxide-rich syngas.

The invention discloses a carbon transaction-oriented biomass gas coupling coal-fired power generation full-life-cycle carbon emission accounting method. The method comprises the steps of determining accounting boundaries of collection and transportation, storage pretreatment, gas production and coupling power generation of covering raw materials; activity data are collected, space-time mapping of upstream batch data and unit side continuous operation data is established, and data quality grading and uncertainty measurement are carried out; when actually measured synthesis gas components or lower calorific values are missing, a soft measurement model is constructed based on operation data, batch characteristic feedforward coupling is introduced, and an estimated value and uncertainty are output; calculating an intermediate quantity based on a material-energy-carbon conservation mechanism model, performing dynamic correction by adopting a residual correction model containing physical consistency constraint, and adjusting a physical constraint weight according to uncertainty; and an emission list and an MRV data packet are generated in combination with the dynamic emission parameters, and are used for monitoring, reporting, checking and transaction settlement, so that the precision and the traceability are improved, and the physical consistency is ensured.

The invention relates to the technical field of fuel gas mixing, and discloses a biological natural gas mixing control method and system.The method comprises the steps that a natural gas branch, a synthesis gas branch and a mixed gas outlet are each provided with a multi-mode sensor unit; carrying out data fusion on the detection data and the detection data of an on-line chromatographic instrument and a mixed gas rapid calorific value instrument, and estimating the low calorific value, the bloom index and the gas component percentage of the mixed gas in real time based on a constraint model and Kalman filtering; establishing a prediction controller, setting input to predict gas characteristics required by a future gas turbine, and outputting a synthesis gas valve opening degree and a natural gas valve fine tuning signal; calculating an allowable mixing proportion upper limit to form a dynamic mixing window, and adjusting the mixing proportion of the natural gas and the synthesis gas based on the dynamic mixing window when a hard boundary condition is met; and when the instability state occurs, the safety interlocking is triggered. According to the invention, rapid detection is realized, active adjustment of rapid working condition fluctuation is realized, and safety interlocking is arranged, so that the overall operation safety is improved.

The invention provides a garbage pyrolysis gasification multi-stage directional regulation-gas-solid phase reforming synergistic hydrogen production treatment process which comprises the following steps: first-stage regulation: pretreatment and graded feeding: crushing, sorting, drying and catalytic coating treatment are performed on garbage through a physical-chemical directional means; second-stage regulation and control: performing low-temperature pyrolysis directional dechlorination, and performing thermochemical directional conversion on plastic and biomass garbage at 350-450 DEG C; third-stage regulation and control: gasifying and melting are coordinated and oriented, and a gas-solid phase coupling reaction is realized in double fluidized beds at 800-900 DEG C; four-stage regulation and control: multi-stage gas-solid phase reforming is carried out, and the hydrogen yield is increased through catalysis-adsorption synergistic effect in a 700 DEG C moving bed; and five-stage regulation and control: deep purification and hydrogen purification, wherein the synthesis gas is selectively oxidized by utilizing chemical looping combustion to release hydrogen with the purity being greater than or equal to 99.99%. According to the invention, the molten ash is used as a catalytic carrier, and the Fe-Ce active sites of the molten ash are utilized to synchronously realize tar cracking and synthesis gas reforming, so that the conversion rate of tar is effectively improved.

A process for the production of carbon monoxide is described. The process involves the electrochemical desorption of carbon dioxide and oxygen from a solution containing a metal bicarbonate and the formation of carbon monoxide from the carbon dioxide. The carbon monoxide produced can be used in a process for the formation of syngas.

The embodiment of the utility model provides zero-emission methanol preparation equipment based on garbage gasification and water electrolysis. The equipment comprises a water electrolysis hydrogen production unit, a garbage gasification unit, a first methanol synthesis unit, a second methanol synthesis unit and a gas separation unit, the water electrolysis hydrogen production unit is respectively connected with the garbage gasification unit, the first methanol synthesis unit and the second methanol synthesis unit; the gas separation unit is respectively connected with the garbage gasification unit, the first methanol synthesis unit and the second methanol synthesis unit; the water electrolysis hydrogen production unit generates hydrogen and oxygen through electrolysis; the garbage gasification unit is used for carrying out gasification reaction by using oxygen provided by the water electrolysis hydrogen production unit to prepare synthesis gas containing carbon monoxide, carbon dioxide and hydrogen; the gas separation unit is used for separating carbon monoxide, carbon dioxide and hydrogen in the synthesis gas introduced from the garbage gasification unit, the carbon monoxide and the hydrogen are introduced into the first methanol synthesis unit, and the carbon dioxide is introduced into the second methanol synthesis unit for preparing methanol respectively.

A system comprising a gasifier comprising one or more burners configured to accept a carbonaceous fuel and an oxidant to produce a syngas and a molten slag; a throat configured to accept the syngas and molten slag from the gasifier; and a radiant syngas cooler positioned below the gasifier configured to accept the syngas and molten slag from the throat; wherein the throat comprises an outer wall and one or more fins extending radially inwards from the outer wall.

The invention discloses a system and method for producing hydrogen-rich fuel gas by coupling concentrating solar energy with biomass chemical looping gasification, and the system comprises a concentrating module which is used for concentrating solar energy to a fuel reactor; the fuel reactor is arranged at the focal plane of the condensation module and is used for reacting the biomass with the oxygen carrier solid particles to obtain synthesis gas and reduced oxygen carrier solid particles; the water vapor reactor is used for oxidizing the reduced oxygen carrier solid particles to generate hydrogen and oxidized oxygen carrier solid particles, and feeding the oxidized oxygen carrier solid particles into the fuel reactor to circulate and react with the biomass; and the synthesis gas regulator is used for receiving the synthesis gas and the hydrogen to obtain hydrogen-rich fuel gas. Energy is provided for the fuel reactor through the condensation module, oxygen carrier regeneration cycle is completed through the water vapor reactor, and the problems of nitrogen mixing and synthesis gas dilution caused by the fact that energy is provided by an air reactor in the prior art are solved.

The application discloses an energy-saving, efficient and adjustable alcohol pre-gas ammonia production process method, and particularly comprises the following steps: S1, a raw material gas is separated from a pressurized coal gasification methanol device as alcohol pre-gas and is sent to a shift device of synthetic ammonia through a sealed pipeline; S2, when entering the shift device, the alcohol pre-gas is mixed with a crude synthetic gas to form a mixed gas, then high-pressure steam is introduced to adjust the water-gas and increase the mixed temperature, carbon monoxide is reacted with water vapor in the shift device, and hydrogen gas is prepared as a shift gas; S3, the shift gas is subjected to low-temperature methanol washing and liquid nitrogen washing, then nitrogen gas produced by air separation is added, a synthetic gas is prepared, and the synthetic gas is sent to an ammonia synthesis device. The energy-saving, efficient and adjustable alcohol pre-gas ammonia production process method is adopted, raw material gas is comprehensively utilized in an energy-saving mode, the methanol and synthetic ammonia production yield is flexibly adjusted, and enterprise benefits are improved.

The invention discloses a process for preparing synthesis gas by non-catalytic and catalytic coupling of hydrocarbon-containing raw material gas. The process comprises the following steps: (S1) dividing preheated raw material gas into first raw material gas and second raw material gas; (S2) introducing the first raw material gas, water vapor and preheated oxygen into a non-catalytic reactor, and carrying out a non-catalytic conversion reaction to generate first synthesis gas; (S3) introducing the second raw material gas and supplemented water vapor into a pre-catalytic reactor, and carrying out pre-catalytic conversion reaction to generate second synthesis gas; (S4) introducing the first synthesis gas and the second synthesis gas into a catalytic reactor, and carrying out catalytic conversion reaction to prepare third synthesis gas; and (S5) carrying out heat recovery on the prepared third synthesis gas to obtain the synthesis gas. According to the invention, the non-catalytic conversion reaction and the catalytic conversion reaction are coupled, so that the material consumption is greatly reduced, and meanwhile, heat is provided for the catalytic conversion reaction through the non-catalytic conversion reaction, so that the heat is recovered to a great extent.

The invention discloses a non-catalytic and catalytic coupling synthesis gas preparation device and application thereof to synthesis gas preparation, the device comprises a non-catalytic reactor, a catalytic reactor, a pre-catalytic reactor, a waste heat boiler, a plurality of heat exchangers, a connecting pipeline and the like, and the pre-catalytic reactor is also provided with a heat exchanger structure; a pre-catalytic reaction cavity is arranged between a cold end inlet and a hot end outlet of the pre-catalytic reactor; the heat exchanger is used for preheating oxygen and part of raw materials and feeding into the non-catalytic reactor; the rest of the raw materials are preheated again and then fed into the pre-catalytic reactor and the non-catalytic reactor, reactants of the pre-catalytic reactor are fed into the catalytic reactor for continuous reaction, reactants of the catalytic reactor are used for supplying heat to the pre-catalytic reactor, the heat exchanger and the waste heat boiler, and the waste heat boiler can be used for preparing raw material steam; and heat balance adjustment of the whole device can also be participated. The device is high in heat utilization rate and conversion rate, can adjust the hydrogen-carbon ratio of the synthesis gas, and is particularly suitable for preparing methanol synthesis gas from natural gas and the like.

A autothermal reforming catalyst that includes treated black powder (primarily hematite), and a method of treating black powder (e.g., from a natural gas pipeline) to give the treated black powder. An autothermal reformer having the treated black powder as reforming catalyst, and a method of producing syngas with the autothermal reformer.

The invention provides an online calculation and control method for gasification performance of an entrained-flow bed gasification furnace, which comprises the following steps of: on the basis of coal quality online element analysis data and coal quality online ash content analysis data, carrying out online correction on the flow of pulverized coal entering the furnace; and calculating the real-time carbon conversion rate and the real-time cold coal gas efficiency by combining the furnace oxygen flow data, the furnace carbon dioxide flow data and the synthesis gas flow and component data. By establishing a time sequence database corresponding to the data, a production operation optimal value (such as an optimal oxygen-coal ratio) within a certain coal quality fluctuation range can be found out from the time sequence database to serve as a control target. The problem of online real-time evaluation and optimization of the gasification performance is solved, control of the optimal value (such as the optimal oxygen-coal ratio) of production operation under the coal quality fluctuation working condition can be achieved, and automatic and efficient operation and intelligent control of the gasification furnace are guaranteed.

The invention belongs to the technical field of energy chemical industry and catalysis, and discloses a preparation method for preparing synthesis gas through iron-catalyzed methane dry reforming. According to the method, gamma-aluminum oxide is taken as a carrier, ferric nitrate is loaded by adopting an equivalent-volume impregnation method, an iron oxide catalyst is formed through drying and roasting, and metal iron active sites with high dispersity are obtained through hydrogen reduction. The reaction is carried out in a fixed bed reactor, the reaction temperature is controlled to be 650-700 DEG C, methane and carbon dioxide are mixed according to the volume ratio of 1: 1 and introduced into the reactor under the normal pressure condition, and efficient dry reforming is realized to generate synthesis gas. According to the method, the methane conversion rate can reach 85% or above, and the carbon dioxide conversion rate can reach 90% or above. Compared with the existing noble metal or nickel-based catalytic system, the catalyst disclosed by the invention has the advantages of cheap raw materials, simple and convenient preparation process, excellent carbon deposition resistance, capability of keeping high activity and stability at lower temperature, low energy consumption, low cost, strong environmental protection property and suitability for industrial amplification.

The invention discloses a method and a system for regulating and controlling the proportion of synthesis gas of an SOEC electric pile. The method comprises the following steps: setting and initializing a target; the method comprises the following steps: acquiring an H2 / CO actual proportion Ractual and multi-source operation parameters of a stack outlet in real time, calculating a proportion deviation delta R = Ractual-Rtarget, and executing hierarchical regulation and control; all regulation and control actions need to follow a preset heat-electricity-gas coupling safety boundary. According to the technical scheme, through an in-situ feedback-multi-parameter cooperative control mechanism, strong coupling limitation of temperature, current density and gas phase flow velocity is broken through, precise regulation and control of the H2 / CO proportion of the synthesis gas are achieved, and the strict proportion requirements of processes such as methanol synthesis and Fischer-Tropsch synthesis on raw material gas are met. According to the synthesis gas proportion regulation and control system of the SOEC electric pile, safety interlocking and trend pre-judgment can be carried out, and compared with traditional manual intervention, the fault recovery time is shorter.

A process for the synthesis of methanol (MeOH) comprising the following steps: (a) passing a water-containing stream (3) through an electrolysis unit (4) to produce a cathode-side stream (5) comprising hydrogen (H2) and an anode-side stream (6) comprising oxygen (O2); (b) heat-exchanging said cathode-side stream (5) and optionally said anode-side stream (6) in one or more indirect heat exchanger(s) (7, 8, 32, 33) to obtain a cathode-side heat-exchanged stream (9) and optionally an anode-side heat-exchanged stream (10); (c) condensing said cathode-side heat-exchanged stream (9) to separate a liquid condensate product (11) and a syngas (12); said cathode-side stream (5) and / or said syngas (12) comprise carbon dioxide and optional carbon monoxide added through a separate stream (2); (d) compressing said syngas (12) in a compressor (27, 28) and then feeding compressed syngas (13) to a MeOH synthesis loop (14) wherein catalytic conversion of said compressed syngas (13) into MeOH is carried out under methanol synthesis conditions, thus obtaining a crude methanol stream (15); (e) distilling said crude methanol stream (15) in one or more distillation column(s) (16, 17) to give a refined MeOH product (19, 22); (i) recycling as feed to the electrolysis unit (4) at least a portion of at least one of: (A) a portion (31) of said compressed syngas (13); and / or (B) a bottom water stream (20) of a distillation column (16, 17).

The invention discloses a system and method for gasification device, gas-based shaft furnace and electric furnace coupling steelmaking, and belongs to the technical field of ferrous metallurgy. The invention provides a system for gasification device, gas-based shaft furnace and electric furnace coupling steelmaking. The system comprises a pretreatment device, a conveying device, a gasification device, a heat exchange device, a gas-based shaft furnace device, an electric furnace device and a decarburization device. The system is an integrated coal gasification and gas-based shaft furnace system, it is ensured that synthesis gas (mainly including CO and H2) generated by the coal gasification furnace is directly supplied to the shaft furnace, no extra device needs to be added for heating, and energy loss in the intermediate transmission process is reduced by optimizing the technological process. The invention aims to realize efficient coupling of coal gasification, the gas-based shaft furnace and the electric furnace by optimizing the system flow, improving the energy utilization efficiency and reducing the production cost.

The invention discloses a high-activity red mud-biomass ash composite oxygen carrier and a multistage construction method and application thereof, and belongs to the technical field of solid waste resource utilization, pretreated red mud powder and biomass ash are compounded, and the biomass ash composite red mud oxygen carrier is prepared after drying and roasting; through modification of K and Ca components in the biomass ash, a high-activity phase is directionally generated in the red mud, an alkaline site is introduced, the oxygen vacancy concentration is increased, and the surface property is optimized; when the oxygen carrier is applied to a chemical looping gasification process, the release activation energy of lattice oxygen can be reduced, the reaction rate and the carbon conversion rate can be improved, the generation of CO2 can be inhibited, the selectivity and the yield of synthesis gas can be improved, and the oxygen carrier has excellent anti-sintering capability and cycling stability; a large amount of solid waste red mud and biomass ash are used as raw materials, the oxygen carrier preparation process has the characteristics of low cost, simple process and environmental friendliness, and a new way is provided for high-value utilization of the red mud and the biomass ash and industrial application of a chemical looping technology.

A hydrocarbon stream is combusted within a reactor to produce soot and syngas. Sub-stoichiometric combustion of the hydrocarbon stream within the reactor converts at least 10% of the carbon in the hydrocarbon stream into soot. The syngas is mixed with a steam stream to produce a hydrogenation feed stream. A shift reactor converts at least a portion of the carbon monoxide and steam to carbon dioxide and hydrogen to produce a shifted gas stream. Water is separated from the shifted gas stream to produce a dehydrated gas stream. The dehydrated gas stream is separated to produce a hydrogen product stream and a recycle stream. The recycle stream is recycled to the reactor.

The plant and method for producing hydrogen and / or ammonia of the present invention provides for lowering the level of contaminants such as CO, CO2 or H2O and inerts such as Ar and CH4 in the ammonia synthesis gas, thereby increasing the concentration of hydrogen in the process gas to a minimum of 99%(v / v), by having one or more hydrogen purification unit(s) downstream to the CO2 capture section and optionally upstream to the nitrogen wash unit.

The invention discloses a thermal power generating unit deep peak regulation and combustion stabilization system and method coupled with fixed bed oxygen-enriched gasification, and relates to the technical field of thermal power generating unit intelligent control. The method comprises the following steps: S1, pre-constructing an AI model library containing a flame state recognition model and a unit load-gasification intensity linkage control model; s2, collecting an automatic power generation control load instruction, a multispectral flame image, unit operation parameters and gasification furnace operation parameter data in real time, and inputting a flame state recognition model to output a flame state and a stability index; s3, calling the linkage control model, and inputting real-time working condition data to calculate the calorific value compensation amount of the synthesis gas; s4, taking the flame stability index as feedback, correcting the feedforward control quantity through the model prediction controller, and dynamically adjusting the operation parameters of the gasification furnace; and S5, when an exit condition is met, an exit track is generated. Intelligent control over the thermal power generating unit is achieved, the operation cost is reduced, the flame monitoring precision and the control response speed are improved, and safe and economical operation of the unit is guaranteed.

This invention discloses a core-shell bifunctional catalyst, its preparation method, and its applications. The catalyst's deoxygenation core is an oxide containing one or more of the following non-precious metals: Mn, Cu, Ni, Ce, or precious metals: Pt, Pd, Rh, Ru, Au, Ag. The desulfurization shell is an oxide containing one or more of the following: Al, Mg, Zr, Zn, Fe, Ni, Mo, W, Co. This invention addresses the industry pain points of existing low-temperature methanol washing processes in coal chemical industries, such as lengthy syngas sulfur and oxygen purification processes, easy sulfur poisoning and deactivation of deoxygenation catalysts, and direct CO2 emissions from tail gas causing carbon emissions and resource waste. Through a self-developed core-shell bifunctional catalyst, it simultaneously achieves ultra-deep removal of all forms of sulfides and oxygen from syngas within a single reactor, while simultaneously realizing the high-value reuse of CO2 from tail gas.

The invention relates to the technical field of catalyst sulfuration in a coal gasification process, and particularly discloses a method for sulfuration of a shift catalyst by adding sulfur into low-sulfur coal, and the method comprises the following steps: fully mixing byproduct sulfur with boiler slag by adopting an internal mixing process to prepare a slag-sulfur mixture; fully and uniformly mixing the slag-sulfur mixture with low-sulfur coal, and feeding the mixture into a coal mill for milling to obtain pulverized coal; the method comprises the following steps: in a coal gasifier, carrying out online vulcanization on a shift catalyst by using pulverized coal, setting slag sampling once every half an hour after adding a slag-sulfur mixture, and monitoring the H2S concentration, the ash water pH value and the sulfate radical concentration in the synthesis gas in real time. According to the method, the by-product sulfur and the boiler slag are subjected to banburying compounding to prepare the slag-sulfur mixture, the slag-sulfur mixture and the low-sulfur coal are uniformly mixed in proportion to prepare powder, and by controlling the outlet temperature of the coal mill, the circulating air volume and the pressurized conveying temperature, the stable combustion of the coal powder and the on-line vulcanization of the shift catalyst are realized.

The invention discloses a method for producing hydrogen by using organic solid waste, and relates to the technical field of new energy. The method comprises the following steps: classifying the organic solid wastes, screening out organic matters and combustible substances, mixing the organic matters and the combustible substances, and crushing into a homogeneous material with the particle size of less than or equal to 50mm; drying the homogenized material to obtain a dried material of which the water content is less than or equal to 8%; feeding the dried material into a rotary kiln pyrolyzing furnace, mixing the dried material with a heat carrier in the rotary kiln pyrolyzing furnace, heating the dried material by flue gas through the cylinder wall of the rotary kiln pyrolyzing furnace and the heat carrier, and pyrolyzing the dried material at the pyrolyzing temperature of 450-750 DEG C to obtain oil gas and pyrolyzing slag; mixing the pyrolysis residues with a cosolvent, preparing a glass body in a gasification melting furnace, mixing oil gas with water vapor, and reacting in a fixed bed reactor to prepare synthesis gas; and preparing the synthesis gas into hydrogen. The pyrolysis efficiency is remarkably improved, fuel consumption is reduced, system energy consumption is correspondingly reduced, and low-temperature efficient pyrolysis is achieved.

Method for producing a gas enriched in carbon dioxide from a feed synthesis gas comprising at least one condensable component and in particular hydrogen, characterized in that the method further comprises: a step referred to as a desaturation step during which at least a portion of the condensable component contained in the feed synthesis gas is, upstream of said pressure swing adsorption separation unit, condensed by cooling to a temperature below 10° C., in particular below or equal to 5° C., and separated, producing said desaturated synthesis gas and at least one condensate; the feed synthesis gas exchanging heat with the desaturated synthesis gas so as to heat said desaturated synthesis gas.

The application discloses a coal drilling type coal underground gasification furnace, a gasification furnace construction method and a coal seam gasification method. A gas outlet well is connected with a gas injection well through a horizontal section at the top of a coal seam to form a U-shaped gasification furnace structure. The coal seam is excavated at the joint of the gas injection well, so that the coal seam collapses, stress is redistributed, the cavity is enlarged, the coal seam below the pocket section of the gas injection well is ignited, the coal seam is positively advanced, and the effective synthesis gas is discharged to the ground through the gas outlet well. The application can well develop and utilize tectonic coal, and has the advantages of environmental protection, safety and good economic benefits.

A process for the production of hydrogen comprises: a first steam reforming step of a feedstock containing hydrocarbons to obtain a first synthesis gas; a first synthesis gas shift and cooling step on the first synthesis gas; a separation step for separating the first synthesis gas into a high concentration hydrogen stream and a tail gas stream; a second low pressure steam reforming step performed on the tail gas to obtain a second synthesis gas; a second synthesis gas shift and cooling step on the second synthesis gas; a CO2 removal step performed on the stream of hydrogen and carbon dioxide exiting the second synthesis gas shift and cooling step in order to separate a CO2 stream from a fuel grade hydrogen stream; a step of feeding at least a part of the fuel grade hydrogen stream to the first steam reforming step.

The invention relates to the technical field of biomass treatment, in particular to a biomass gasification system and a biomass gasification method. The biomass gasification system comprises a gasification furnace which is provided with a furnace body, a biomass inlet communicated with the furnace body, a gasification agent inlet and a crude synthesis gas outlet; an inlet of the waste heat boiler is communicated with the crude synthesis gas outlet, and an outlet of the waste heat boiler is connected with a negative pressure device; an inlet of the dust remover is communicated with the negative pressure device, and an outlet of the dust remover is connected with a cooling device. The biomass and the gasifying agent are gasified and reacted in the gasifier to generate crude synthesis gas, the crude synthesis gas is discharged after being dedusted by the deduster and cooled by the cooling device in sequence under the negative pressure environment provided by the negative pressure device, and due to the arrangement of the negative pressure device, the atmospheric pressure in the system is always lower than the atmospheric pressure outside the system; therefore, the synthesis gas generated in the system cannot be leaked, but is discharged from a unified outlet after being treated, so that the normal operation of equipment is ensured, and the potential safety hazard is reduced.

The utility model relates to the technical field of methanol purification, and provides a coal-to-methanol synthesis gas purification device which comprises a catalytic device, a gas inlet is formed in the top of the catalytic device, and a gas outlet is formed in the bottom of the catalytic device; a gas distributor is installed at the position, close to the inner side of the catalytic device, of the bottom of the gas inlet, two partition plates are further arranged on the inner side of the catalytic device, a ring pipe is arranged at the position, arranged on the inner side of the catalytic device, between the two partition plates, and cooling pipes are arranged at the bottom end and the outer side of the ring pipe. A catalyst cavity is formed in the inner side, close to the outer side of the cooling pipe, of the catalytic device; the application of the demister further removes tiny liquid drops and vaporific impurities entrained in the gas, ensures the purity of the purified synthesis gas, and meets the strict requirements of high-end chemical production on the gas quality.