39results about How to "High effective gas content" patented technology

The invention relates to a technological method for preparing oil products by the Fischer-Tropsch synthesis. In the technological method, a FT synthesis process comprises a first-stage FT synthesis process and a second-stage FT synthesis process; in particular, the technological method comprises the following steps: (1) synthesis gases are subjected to FT synthesis reaction in a first-stage synthesis reactor; (2) a part of tail gases from the first-stage synthesis reactor are circularly returned to an entrance of the first-stage synthesis reactor, and another part of the tail gases enter a second-stage synthesis reactor for the further FT synthesis reaction; (3) a part of tail gases from the second-stage synthesis reactor are circularly returned to an entrance of the second-stage synthesis reactor, and another part of the tail gases are used for reclaiming low-carbon hydrocarbons and hydrogen gases and then are used as fuel gases; and (4) by utilizing the recovered hydrogen gases, thehydrocarbon products in the first-stage synthesis reactor and the second-stage synthesis reactor and the hydrocarbon products which are obtained by separating and recovering the tail gases are subjected to hydrogenation and purification and then are fractionated to generate various oil products. Compared with prior art, the technological method has the characteristics of economy, flexibility, lowcost and the like.

The invention relates to a slag gasifier for a pressurized fixed bed. The slag gasifier comprises a coal lock for intermittently taking coal from a bunker and feeding the coal into a pressurized gasifier container, a transition bin enabling the coal in the coal lock to be fed in the pressurized gasifier container conveniently, the pressurized gasifier container for combusting and gasifying carbon-containing solid fuels at a certain temperature and with certain pressure by virtue of a gasifying agent from a nozzle, a connection pup joint for gasifying operations of slagging, chilling, evacuation and the like, a chilling chamber for chilling and cooling molten slag and a slag lock for storing vitric slag particles and discharging the vitric slag particles to the outside by a cone valve. An operation method of the slag gasifier comprises the steps of adjusting the temperature of a raw gas outlet, gasifying carbon-containing solid fuels, adjusting the gasifying load of the gasifier, controlling the operation pressure of the gasifier, controlling the pressure difference between the connection pup joint and the gasifier, slag discharge of a slag discharging port and slag support operations, chilling and cooling molten slag, controlling water quantity of the chilling chamber to remove heat of the molten slag, storing slag particles and discharging the slag particles to the outside.

The disclosure relates to a coupled gasification system and method for pulverized coal and lump coal, the system includes a lump coal gasifier and a pulverized coal gasifier; the pulverized coal gasifier has a pulverized coal gasification reaction chamber, a pulverized coal inlet, and a gasification agent inlet The lump coal gasification furnace has a lump coal gasification reaction chamber, a lump coal inlet, a gas inlet, a slagging port and a crude gas gas outlet; the gas inlet is connected with the pulverized coal gasification reaction chamber, so that the gas generated by the reaction in the pulverized coal gasification reaction chamber It enters the lump coal gasification reaction chamber from the gas inlet, and reacts with the lump coal gasification; the slag outlet is connected with the pulverized coal gasification reaction chamber, so that the solid particles produced by the reaction in the lump coal gasification reaction chamber enter from the slag outlet to the Combustion and gasification reactions occur in the pulverized coal gasification reaction chamber, thereby realizing the simultaneous gasification of pulverized coal and lump coal, so as to balance the uneven supply and demand of pulverized coal and lump coal, and improve the utilization rate and conversion rate of coal.

The invention discloses a sulfur-resistant methanation system and method for coal-based natural gas, which belongs to the technical field of coal-based natural gas; firstly, a coal gasification process combining crushed coal gasification and pulverized coal gasification is adopted, and an adiabatic reactor and a homogeneous temperature reactor are used in conjunction with each other. The combined sulfur-resistant methanation process performs methane synthesis on the crude gas to increase the effective content of methane in the synthesis gas and reduce the reaction load of the subsequent section, and then remove the sulfide and carbon dioxide in the raw gas through a conventional purification process, and finally through adiabatic The deep methanation process combining the reactor and the uniform temperature reactor produces qualified natural gas for civil use; this process system realizes the comprehensive utilization of raw coal, effectively reduces the production load of the methanation process, and reduces the size of the reactor and pipeline equipment , improve the unit production capacity, and make full use of the strong exothermic characteristics of the methanation reaction to produce medium-pressure steam and high-quality supersaturated steam, rationally utilize the heat in the process system, reduce energy consumption, and increase production efficiency.

The invention relates to a Fischer-Tropsch synthetic oil process circulation tail gas treatment method. The method is characterized in comprising the following steps: circulation tail gas is subjected to heat exchange with synthesis gas from a combined catalysis and reforming reactor through a first heat exchanger, and is divided into two streams; a first stream of the circulation tail gas enters a plasma generator; a second stream of the circulation tail gas enters a gas mixer and is mixed with a certain proportion of high-pressure steam, such that water content in the raw gas is adjusted; mixed gas from the mixer and plasma gas from the plasma generator are respectively injected into the combined catalysis and reforming reactor from a top inlet of the combined catalysis and reforming reactor; the gases are mixed, and the mixed gas enters a catalytic reaction part and is subjected to a combined catalysis and reforming reaction; synthetic gas from the combined catalysis and reforming reactor is subjected to heat recovery, and a liquid phase is separated, such that the gas can be recycled as circulation tail gas.

The invention relates to a method and a device for gasification, in particular to the method and the device for serial gasification of a fixed bed and a fluidized bed, wherein the method comprises the following steps: 1) feeding a gasification raw material with the particle size of between 13 and 50 millimeters and a gasification agent to a fixed bed gasifier to perform gasification reaction so as to generate coal gas and ash content, discharging the ash content from an ash discharging opening of the fixed bed, and introducing the coal gas to the lower part of a dense phase zone of a fluidized bed gasifier; 2) feeding a thin particle shapeed coal gasification raw material with the particle size of between 0.5 and 8 millimeters and the gasification agent into a fluidized bed gasifier to perform gasification reaction with the vertically raising coal gas so as to generate the coal and the ash content, discharging the ash content from the ash discharging opening of the fluidized bed, and introducing the coal gas into a cyclone separator; and 3) performing gas-solid separation on the coal gas in the cyclone separator, outputting the coal gas from a coal gas outlet of the cyclone separator, and sending back solid particles carried by the coal gas to the fluidized bed gasifier through a dipleg of the cyclone separator to perform the gasification reaction continuously. The method and the device have quite important significance on improving the economic benefit and reducing the sewage treatment cost for the medium and small-sized coal chemical enterprises in China.

The invention relates to a fixed-bed pure-oxygen continuous gasification device and process adaptable to diversified coals. According to the device and the process, CO2, pure oxygen and superheated steam serve as gasifying agents and subject to a gasification reaction with feed coal in a fixed-bed pure-oxygen continuous gasifier, so as to generate gasified coal gas; the gasified coal gas enters a dust remover so as to remove solid particles from the gasified coal gas, and a water cooler is arranged at the upper part of the efficient dust remover and is used for recovering part of sensible heat from the gasified coal gas; the gasified coal gas subjected to dust removal enters a heat-pipe heat exchanger for heat recovery, and low-pressure steam is a byproduct; and low-temperature gasified coal gas enters a low-pressure coal gas scrubbing tower for final cooling and dust removal, and scrubbed water gas is connected and conveyed to a gas tank. The content of CO and H2 in the gasified coal gas can reach 80% or more, the ratio range of adjustment of CO among ingredients of the coal gas is 40-65%, the ratio range of adjustment of H2 among the ingredients of the coal gas is 5-40%, and the gasified coal gas can serve as raw material gas of a variety of chemical products through being subjected to further deep treatment by processes such as conversion and purification.

The invention provides a start-up compound burner for a water-coal-slurry or coal dust pressure gasification furnace. The start-up compound burner comprises a fuel gas passage pipe and a combustion-supporting gas passage pipe which are coaxially sheathed with each other and respectively arranged inside and outside, and ignition electrodes, wherein the fuel gas passage pipe is connected with the combustion-supporting gas passage pipe through two flanges, the two flanges are sealed by a gasket, the size of an annular space between a flow passage at the front end of the combustion-supporting gaspassage pipe and the fuel gas passage pipe is adjusted by the thickness of the gasket, and the ignition electrodes are arranged outside the combustion-supporting gas passage pipe and extended to the front ends of the fuel gas passage pipe and the combustion-supporting gas passage pipe. The start-up compound burner has the advantages of compact structure and space saving. The burning of various fuel gases can be realized by adjusting the fuel gas passage. During the actual operation, the burner can automatically ignite and keep temperature rise stable. Besides, the invention can also lower thework intensity of on-site personnel, and can perform continuous operations of baker and chemical industrial feeding without being dismantled after the installation in cold conditions.