Two-section gasifying device of entrained-flow bed and gasifying method of two-section gasifying device

A technology of gasification device and entrained bed, which is applied in two-stage entrained bed gasification device and its gasification field, can solve the problems of carbon conversion rate, temperature distribution and unreasonable flow field of liquid slag discharge, and achieve the goal of using Long service life, reasonable temperature field distribution in the furnace, and the effect of improving the carbon conversion rate

Inactive Publication Date: 2013-02-06
SHANGHAI BOILER WORKS
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main defect of the existing syngas upward gasifier is that the temperature distribution and flow field in the furnace are unreasonable, and it is easy to cause problems such as liquid slag discharge and slag blockage and low carbon conversion rate.

Method used

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  • Two-section gasifying device of entrained-flow bed and gasifying method of two-section gasifying device

Examples

Experimental program
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Embodiment 1

[0052] A two-stage entrained dry coal gasification furnace with a daily coal processing capacity of 3,000 tons. The gasification pressure is 4.0 MPa. The inner wall is a water-cooled wall structure. Four small tangential circles are arranged on the side of gasification chamber 1 in the upper section of the gasification furnace. The side process burner 3a has a tangent angle of 4.5°, and the gasification chamber 4 in the lower section of the gasifier is provided with two opposed process burners 3b. Let the inner diameter of the main body of gasification chamber 1 in the upper part of the gasifier be D 1 , the main size parameters of the gasifier are shown in Table 1:

[0053] Table 1 Main dimension parameters of gasifier

[0054] parameters

value

parameters

value

Inner diameter of synthesis gas outlet 5

0.32D 1 (m)

α

4.5(°)

Inner diameter of side process burner chamber 2a

0.4D 1 (m)

ξ

0(°)

Distance bet...

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Abstract

The invention provides a two-section gasifying device of an entrained-flow bed. The two-section gasifying device comprises an upper-section gasifying chamber of a gasification furnace and a lower-section gasifying chamber of the gasification furnace. At least one layer of side technological burner chambers is arranged on the periphery of the upper-section gasifying chamber of the gasification furnace, at least two side technological burners are symmetrically arranged inside each side technological burner chamber, opposite technological burner chambers are coaxially arranged on two sides of the lower-section gasifying chamber of the gasification furnace, and two opposite technological burners are coaxially arranged in each opposite technological burner chamber. The invention further provides a gasifying method of the two-section gasifying device of the entrained-flow bed. The method includes respectively feeding carbonic fuel and gasifying agents together into the two-section gasifying device from the side technological burners and the opposite technological burners. The volume of oxygen in the gasifying agents fed into the two-section gasifying device via the opposite technological burners accounts for 80-100% of the total volume of oxygen in the carbonic fuel and oxygen in the gasifying agents. The device is stable and reliable in running, wide in fuel adaptability, long in service life and suitable for large-scale application, a synthesis gas cooling process is efficient, and the carbon conversion rate is increased.

Description

technical field [0001] The invention relates to a two-stage airflow bed gasification device and a gasification method thereof, belonging to the technical field of gasification reaction devices. Background technique [0002] Coal gasification technology is the basis for the development of process industries such as coal-based chemicals, coal-based liquid fuels, combined cycle power generation, and hydrogen production, and is the key technology and leading technology in these industries. [0003] The existing carbon-containing fuels such as coal and coke can be gasified. Among the gasification technologies using entrained flow bed, the representative dry coal powder gasification technology mainly includes: the multi-burner technology developed by East China University of Science and Technology and other units. Opposite dry coal pulverized gasifier, Shell gasifier, E-Gas gasifier, GSP gasifier and two-stage dry coal pulverized gasifier of State Power Corporation Thermal Enginee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/48C10J3/50
CPCY02E20/18
Inventor 倪建军张建文池国镇程相宣
Owner SHANGHAI BOILER WORKS
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