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A circulating fluidized twin-bed hot gas station and its gas production process

A circulating fluidization and fluidized bed technology, applied in the chemical industry, sustainable manufacturing/processing, petroleum industry, etc., can solve the problem of low carbon conversion rate, achieve high carbon conversion rate, strong adaptability, and gas calorific value high effect

Active Publication Date: 2020-11-06
ZHONGJUXIN OCEAN ENG EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention combines fluidized bed pyrolysis gasification technology with moving bed circulating gasification technology, which not only avoids the generation of phenolic pollutants, but also solves the problem of low carbon conversion rate

Method used

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  • A circulating fluidized twin-bed hot gas station and its gas production process
  • A circulating fluidized twin-bed hot gas station and its gas production process
  • A circulating fluidized twin-bed hot gas station and its gas production process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] as attached figure 1 As shown, the fluidized bed pyrolysis gasification furnace 3 is composed of a furnace chamber 301 and a spiral material guide 302; the furnace chamber 301 is a drum-shaped coal pyrolysis chamber, and the drum-shaped coal pyrolysis chamber is vertically arranged; The spiral feeder 302 is provided with a spiral blade, the spiral feeder 302 is fixed along the axial direction of the furnace chamber 301, and the edge of the spiral blade is seamlessly connected with the inner wall of the furnace chamber 301; The channel that slides down, the gap between the spiral groove and the coal is the channel for the gas to flow from bottom to top; the gas-solid isolation device 2 is arranged between the interface of the coal hopper 1 and the fluidized bed pyrolysis gasifier 3 .

[0034] In Embodiment 1, the helix angle λ of the helical blade should satisfy λ>arctgf, where f is the sliding friction coefficient between coal and steel.

Embodiment 2

[0036] as attached figure 2 As shown: the fluidized bed pyrolysis gasification furnace 3 is composed of a furnace cavity 301 and a screw propeller 303, combined with an attached image 3 , the furnace cavity 301 is a barrel-shaped coal pyrolysis chamber, and the barrel-shaped coal pyrolysis chamber is arranged horizontally; the screw propeller 303 is provided with a helical blade, and the screw propeller 303 is arranged along the axial direction of the furnace cavity 301, and The rotation diameter of the spiral blade and the inner diameter of the furnace chamber 301 form a clearance fit, and the spiral blade is also provided with a hole 304 for the air flow to pass through; the lower part of the furnace chamber 301 is a channel for coal to be pushed into the moving bed circulating gasifier 4 by the screw propeller 303 , the upper part is the channel through which the coal gas generated by the coal in the moving bed circulating gasifier 4 flows into the cyclone separator 9, an...

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Abstract

The invention relates to a circulating fluidized double-bed hot coal gas station and a gas production process thereof. The hot coal gas station comprises a coal hopper, a fluidized bed pyrolysis gasifier, a mobile bed circulating gasifier, and a cyclone separator, wherein the outlet of the coal hopper communicates with the coal inlet of the fluidized bed pyrolysis gasifier, the coal outlet of thefluidized bed pyrolysis gasifier communicates with the coal inlet of the mobile bed circulating gasifier, and the coal gas outlet of the mobile bed circulating gasifier communicates with the coal gasinlet of the cyclone separator. The furnace cavity of the fluidized bed pyrolysis gasifier is a cavity for coal low temperature pyrolysis, a passage for the coal to enter the mobile bed circulating gasifier, and a passage for the coal gas produced in the mobile bed circulating gasifier to flow into the cyclone separator. The characteristics of the gas production process are as follows: the high temperature coal gas which passes through the coal gas passage of the fluidized bed pyrolysis gasifier exchanges heat in the flow process with the coal in the coal passage of the fluidized bed pyrolysisgasifier, so that the coal can be subjected to heat-absorption temperature-rising and preliminary pyrolysis gasification. The gas production process has high carbon conversion rate, low operation cost, energy saving and environmental protection.

Description

technical field [0001] The invention relates to the technical field of coal gas production, in particular to a thermal coal gas station and a gas production process thereof, in particular to a circulating fluidized double-bed thermal coal gas station and a gas production process thereof. Background technique [0002] Coal pyrolysis, gasification conversion and quality-based utilization are the main research and application hotspots of clean coal gasification technology. Advanced coal gasification technology can not only reduce the emission of pollutants to the atmosphere, but also greatly improve the utilization rate of coal. In March 2015, the Ministry of Industry and Information Technology and the Ministry of Finance jointly compiled the "Action Plan for Efficient Utilization of Coal in the Industrial Field (2015-2020)", making a layout for the clean utilization of coal in the industrial field. The action plan recommended 21 kinds of coal in the industrial field Clean and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10J3/56C10J3/72C10J3/84C10B53/00
CPCY02P20/10
Inventor 张连华张晖陈柏金陈刚
Owner ZHONGJUXIN OCEAN ENG EQUIP CO LTD