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Method for co-combusting dry-distilled crude gas or hydrogen production desorption gas thereof and semicoke

A technology of raw coal gas and dry distillation, which is applied in gasification process, manufacture of combustible gas, granular/powdered fuel gasification, etc. It can solve the problem of inability to fix carbon and volatile matter, high residual carbon content in ash residue, semi-coke volatile matter, etc. Low-level problems, to achieve large-scale utilization, reduce equipment costs, and reduce operating steps

Inactive Publication Date: 2016-08-03
HUADIAN HEAVY IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to solve the problem in the prior art that due to the low volatile content of semi-coke, the use of existing burners cannot realize the mutual combustion of fixed carbon and volatile content in the combustion process, resulting in incomplete combustion, resulting in ash and residual carbon In order to provide a combined burner capable of burning semi-coke in large quantities and fully combust the semi-coke, and a method for co-combusting dry distillation of raw coal gas or hydrogen-producing desorbing gas and semi-coke

Method used

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  • Method for co-combusting dry-distilled crude gas or hydrogen production desorption gas thereof and semicoke
  • Method for co-combusting dry-distilled crude gas or hydrogen production desorption gas thereof and semicoke

Examples

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Comparison scheme
Effect test

Embodiment 1

[0047] Such as figure 1 and figure 2 As shown, the dry distillation of raw coal gas or its combined combustion method for hydrogen production, desorption gas and semi-coke provided in this embodiment includes the following steps:

[0048] S1. The semi-coke produced by dry distillation is sent from the coke field by the belt conveyor, through the electromagnet and the crusher to the storage bin in the coal bunker, and then enters the coal mill through the feeder for grinding and pulverization, and passes through the air (Generally, the temperature is controlled below 70°C) and sent to the screening device to obtain powder coke with a particle size of 10 μm, which is stored in the powder bin for later use. The powder coke in the powder bin is sent from the powder feeder to the burner, and passed The coke powder channel 5 in the mouth is sprayed into the boiler;

[0049] S2. After the air is boosted by the blower, it enters the air preheater, absorbs the heat in the flue gas a...

Embodiment 2

[0060] Such as figure 1 and figure 2 As shown, the dry distillation of raw coal gas or its combined combustion method for hydrogen production, desorption gas and semi-coke provided in this embodiment includes the following steps:

[0061] S1. The semi-coke produced by dry distillation is sent from the coke field by the belt conveyor, through the electromagnet and the crusher to the storage bin in the coal bunker, and then enters the coal mill through the feeder for grinding and pulverization, and is passed through nitrogen Send it to the screening device to obtain powder coke with a particle size of 100 μm, store it in the powder bin for later use, send the powder coke in the powder bin to the burner from the powder feeder, and spray it to the boiler through the powder coke channel 5 in the burner Inside;

[0062] S2. After the air is boosted by the blower, it enters the air preheater, absorbs the heat in the flue gas, and the temperature rises. Finally, the air is boosted ...

Embodiment 3

[0073] Such as figure 1 and figure 2 As shown, the dry distillation of raw coal gas or its combined combustion method for hydrogen production, desorption gas and semi-coke provided in this embodiment includes the following steps:

[0074] S1. The semi-coke produced by dry distillation is sent from the coke field by the belt conveyor, through the electromagnet and the crusher to the storage bin in the coal bunker, and then enters the coal mill through the feeder for grinding and pulverization, and passes through the air Sent to the screening device to obtain powder coke with a particle size of 200 μm, which is stored in the powder bin for later use. The powder coke in the powder bin is sent to the burner by the powder feeder, and is sprayed to the boiler through the powder coke channel 5 in the burner Inside;

[0075] S2. After the air is boosted by the blower, it enters the air preheater, absorbs the heat in the flue gas, and the temperature rises. Finally, the air is boost...

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Abstract

The invention discloses a method for co-combusting dry-distilled crude gas or hydrogen production desorption gas thereof and semicoke. The method comprises the following steps: S1, grinding semicoke into powder, and jetting the coke powder to a combustion device through a coke powder channel in a burner by taking air, fuel gas or nitrogen as a conveying medium; S2, pressurizing and heating air, and then jetting the air to the combustion device through a gasifier channel in the burner; S3, jetting the dry-distilled crude gas or the hydrogen production desorption gas thereof into the combustion device through a combustible gas channel in the burner to fully mix the gas with the coke powder obtained in the step S1 and the air from the step S2 for combustion, and preheating the air in the step S2 with flue gas produced in a combustion process to increase the temperature to make the coke powder combusted fully. A test shows that the ringelman emittance in the flue gas is of the first level, which shows that the combustion is full.

Description

technical field [0001] The invention belongs to the technical field of dry distillation product semi-coke and raw furnace gas clean utilization, and in particular relates to a method for combined combustion of dry distillation raw coal gas or hydrogen-producing deabsorbing gas and semi-coke. Background technique [0002] my country's oil and natural gas resources are relatively poor, but coal resources are very rich. With the increasing shortage of oil resources, the clean utilization technology of coal has gradually become the focus of my country's energy research and development. my country's low-rank coal reserves are large, accounting for about 35% of my country's coal reserves, mainly including lignite and sub-bituminous coal (long-flame coal, non-caking coal, weakly caking coal), which have high volatile content, relatively low calorific value, and caking properties. weak characteristics. For low-rank coal in my country, especially low-rank coal with high oil content, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/50
CPCY02P20/129C10J3/506C10J2300/0906C10J2300/0943C10J2300/1606
Inventor 林伟宁刘星单小勇陈松白建明
Owner HUADIAN HEAVY IND CO LTD
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