Device and method for producing synthesis gas
A synthesis gas and dry process technology, which is applied in gasification process, combined combustion mitigation, and production of combustible gas, etc., can solve the problems of gasification efficiency, low investment and engineering cost, high energy consumption per unit gas production, and high carbon content in fly ash. problems, to achieve the effect of improving the total carbon conversion rate, reducing unit coal consumption, and high slag capture rate
Inactive Publication Date: 2016-06-22
胡志阳
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Problems solved by technology
[0005] Aiming at the disadvantages of low carbon conversion rate, high carbon content in fly ash and high energy consumption of unit gas production in existing atmospheric entrained bed gasifiers, the purpose of the present invention is to provide a device and method for producing synthesis gas, It has the characteristics of high carbon conversion rate, high slagging rate, high gasification efficiency, low investment and engineering cost
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[0026] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:
[0027] Such as figure 1 Shown, the method for producing syngas by the device of the present invention producing syngas comprises the steps:
[0028] Step (a), after the raw coal is pulverized and dried by the coal mill 1, it is sent to the atmospheric powder bin 2, and the moisture of the raw coal after drying can meet the normal pressure of the coal powder pump 3, and it can be generally dried to 8-10%. , which is lower than the requirement for pulverized coal moisture in pressurized transportation of pulverized coal.
[0029] In step (b), the pulverized coal is sent from the atmospheric pressure storage bin 2 through the pulverized coal pump 3 to the gasifier 5. Nitrogen, carbon dioxide or air can be used as the conveying gas. There is a screw feeder behind the pulverized coal pump 3. Ensure uniform delivery;
[0030] In step (c), water vap...
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The invention discloses a device and a method for producing a synthesis gas. The device comprises a coal mill; a pulverized coal outlet of the coal mill is connected with an inlet of a normal pressure pulverized coal bunker; an outlet of the normal pressure pulverized coal bunker is connected with a gasification furnace through a pulverized coal burning nozzle; a gas conveying pipeline is communicated with and a pulverized coal pump is arranged on a pipeline which is communicated with the normal pressure pulverized coal bunker and the gasification furnace; slag capturing equipment is distributed at an outlet of a reaction area of the gasification furnace; a slag discharging opening of the gasification furnace is communicated with a slag tank; a synthesis gas outlet of the gasification furnace is communicated with an inlet of a waste heat boiler; an outlet of the waste heat boiler is communicated with an inlet of a dry dust collector; a synthesis gas outlet of the dry dust collector is communicated with a downstream user of the synthesis gas; a fly ash outlet of the dry dust collector is communicated with an ash locking hopper, a fly ash storage tank and a fly ash re-circulating pipeline in sequence; an outlet of the fly ash re-circulating pipeline is connected with the inlet of the normal pressure pulverized coal bunker. The invention further provides a method for producing the synthesis gas by the device. The device and the method have the characteristics of high carbon conversion efficiency, high slag forming efficiency, high gasification efficiency, low investment and low construction cost.
Description
technical field [0001] The invention belongs to a method and a device for preparing synthesis gas by using coal as a raw material, in particular to a device and a method for producing synthesis gas by dry coal powder atmospheric pressure entrained bed gasification. Background technique [0002] At present, coal gas, as an industrial fuel gas, is widely used in metallurgy, building materials, machinery and other industries. For example, in the ceramic and glass industries, although the whole world is promoting high-quality fuels, such as natural gas and oil, it is still difficult to change the energy structure in my country at this stage. The main reason is that there is more coal and less oil and gas; Higher than coal, if coal is used as fuel, the fuel cost can be greatly reduced, so gas is still a commonly used fuel for furnaces. [0003] Coal gas is produced by gasification reaction of coal and gasification agent. The gasification reaction of coal occurs between carbon an...
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Patent Timeline
Login to View More IPC IPC(8): C10J3/48C10J3/86C10J3/84C10J3/72
CPCY02E20/18Y02P20/129C10J3/485C10J3/466C10J3/72C10J3/84C10J3/86C10J2300/0906C10J2300/0909C10J2300/1603C10J2300/1631
Inventor 胡志阳
Owner 胡志阳