Dry-process slag discharge device and method for entrained flow bed

A dry slagging and entrained-flow technology, which is applied in the field of coal gasification, can solve the problems of difficult to achieve engineering scale-up, increase the difficulty of product gas purification section, increase production cost, etc., and achieve the effect of realizing clean conversion and reducing black water discharge.

CN103031156AActive Publication Date: 2013-04-10ENN SCI & TECH DEV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2013-04-10

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Abstract

The invention relates to a dry-process slag discharge device and method for an entrained flow bed. The device is sequentially divided into a reaction section, a cooling section and a slag discharge section from top to bottom, wherein the reaction section comprises an inner barrel; the inner barrel is fixed on the top wall of the reaction section, and is opened downwards; the top wall of the reaction section is provided with a feed nozzle in a penetrating mode, which is opened to the internal space of the inner barrel; and the side wall of the reaction section is provided with a product gas outlet. According to the invention, gas flow deflection is utilized to implement primary separation of the gas product and solid product, and the solid coke slag and gas product are respectively cooled to satisfy the requirements of cooling the solid product and gas product to different temperatures; and the entrained flow bed operation and moving bed operation are combined to substitute the slag tank on the lower part of the entrained flow bed to further cool the coke slag, thereby effectively reducing the black water discharge amount and implementing clean conversion of coal resources.
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Description

technical field

[0001] The invention relates to the technical field of coal gasification, in particular to a dry slag discharge device and method for an entrained bed. The invention is especially suitable for coal hydrogasification and other production processes that have different requirements on the condensation temperature of gaseous products and solid products. Background technique

[0002] Coal gasification technology has become an important technology to realize the clean transformation of coal, and it is developing in the direction of large-scale, strong adaptability of pulverized coal, low pollution, and easy purification. In recent years, entrained bed gasification technology has attracted more and more attention due to its advantages of strong feedstock adaptability, high carbon conversion rate, and high cold gas efficiency, and has become the mainstream of gasification technology development. Several existing mainstream entrained bed gasification technology proce...

Examples

Embodiment Construction

[0038] For better illustrating the present invention, facilitate understanding technical scheme of the present invention, typical but non-limiting embodiment of the present invention is as follows:

[0039] Such as figure 1 As shown, a dry slagging device for entrained bed, the device is divided into reaction section, cooling section and slagging section from top to bottom;

[0040] The reaction section includes an inner cylinder 4, the inner cylinder 4 is fixed on the top wall of the reaction section and opens downward, and the top wall is provided with a feed nozzle 1 opening to the inner space of the inner cylinder 4; the reaction section A product gas outlet 5 is provided on the side wall 2 . A filter screen 14 is provided at the outlet of the inner cylinder 4 .

[0041] Eight coolant nozzles 7 are arranged symmetrically on the side wall of the cooling section.

[0042] The slag discharge section includes a moving bed section 8 and a connected conical bottom. A gas dist...