Online switching method of single-nozzle overhead entrained-flow pulverized coal gasifier

A gasification furnace, top-mounted technology, applied to the gasification of granular/powdered fuels, gasification device details, and the manufacture of combustible gases, etc., can solve the problems of long time and the impact of syngas on economic benefits, etc. Reduce economic losses and maintain stable effects

Inactive Publication Date: 2019-11-05
中安联合煤化有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This new design for an air furnace has several benefits compared to previous designs such as being able to use different types of fuel instead of just one or two ones at once without affecting other systems' performance. It also reduces the size of the pipe network needed while still providing efficient operation.

Problems solved by technology

This patented technical problem addressed by the inventors relates to finding ways to improve the efficiency and safety during startup processes while minimizing negative effects on downstream equipment such as power generators or fuel cells used at the facility's site.

Method used

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  • Online switching method of single-nozzle overhead entrained-flow pulverized coal gasifier
  • Online switching method of single-nozzle overhead entrained-flow pulverized coal gasifier
  • Online switching method of single-nozzle overhead entrained-flow pulverized coal gasifier

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with accompanying drawing:

[0016] refer to figure 1 The shown equipment part of the present invention includes a first gasifier A and a second gasifier B, each of which is provided with a nozzle A1, B1 at the top.

[0017] In this embodiment, three pulverized coal inlets are set on the nozzle A1 of the first gasifier A, respectively connected to three pulverized coal pneumatic conveying pipelines A2, A3, A6, and the nozzle B1 of the corresponding second gasifier B is also set. Three pulverized coal inlets are respectively connected to three pulverized coal pneumatic conveying pipelines B2, B5 and B6. The pulverized coal that enters the first gasifier A or the second gasifier B through the nozzle is a dry powder that meets the pneumatic conveying conditions.

[0018] The synthesis gas outlet of the first gasifier A is connected to the flare vent main pipe C and the synthesis gas system main pipe D thro

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Abstract

The invention relates to an online switching method of a single-nozzle overhead entrained-flow pulverized coal gasifier. The gasifier used in the online switching method of the single-nozzle overheadentrained-flow pulverized coal gasifier has a single nozzle, and is overhead, wherein the nozzle is connected with multiple pulverized coal pneumatic transportation pipelines, a switching process of aspare gasifier and an online gasifier is achieved by opening and closing one pulverized coal pipeline of the spare gasifier and one pulverized coal pipeline of the online gasifier, for each switch, only synthesis gas during start-up and running of one pulverized coal pneumatic transportation pipeline needs to be vented, thus economic losses caused by venting are greatly reduced, and the stabilityof a total load of a system is maintained; and meanwhile, due to the fact that the single nozzle is adopted for being connected with the multiple pulverized coal pneumatic transportation pipelines, the larger the number of arranged pulverized coal pneumatic transportation pipelines which enter the nozzle, the lower the venting amount in the switching process, the shorter time consumed on switching, and the less load fluctuation of a main of the synthesis gas system.

Description

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Claims

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Application Information

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Owner 中安联合煤化有限责任公司
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