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Preparation system of industrial gas and preparation method of industrial gas

An industrial gas and preparation system technology, which is applied in the petroleum industry, the manufacture of combustible gas, and the gasification of granular/powdered fuels, and can solve the problems of lack of industrial gas

Pending Publication Date: 2018-09-11
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a new type of industrial gas preparation method to overcome the lack of an industrial gas preparation system suitable for low-pressure entrained bed gasification and an industrial gas preparation method in the prior art. System and method for preparing industrial gas

Method used

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  • Preparation system of industrial gas and preparation method of industrial gas
  • Preparation system of industrial gas and preparation method of industrial gas
  • Preparation system of industrial gas and preparation method of industrial gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] (1) Industrial gas preparation system

[0090] Such as figure 1 The industrial gas preparation system shown includes a pulverized coal conveying unit, an entrained bed gasifier, a convection waste heat boiler 60, a steam drum 70 and a dust removal unit;

[0091] The pulverized coal conveying unit is used to convey pulverized coal to the first nozzle 111 of the entrained-bed gasifier;

[0092] The entrained-bed gasification furnace has a gasification furnace body 10 and a cyclone separation chamber 20; the gasification furnace body 10 has a gasification chamber 11 and a collection chamber 12 located at the lower part of the gasification chamber 11; A nozzle 111, the first nozzle 111 is used to pass pulverized coal and oxygen into the gasification chamber 11; the top of the gasification chamber 11 is provided with a first synthesis gas outlet 113; the cyclone separation chamber 20 has a second synthesis gas outlet 211 and The fly ash outlet 221; the cyclone separation chamber 2...

Embodiment 2

[0125] (1) Industrial gas preparation system

[0126] Such as figure 2 In the preparation system shown, the height of the gasification chamber 11 is 8D, the distance between the first nozzle 111 and the top of the gasification chamber 11 is 6D, and the distance between the first nozzle 111 and the second nozzle 112 is 2D; among them, the gasification scale 1500t dry coal / day, the operating pressure of the entrained bed gasifier is 0.4MPaG, the absolute pressure is 0.5MPa, the gasification scale / operating pressure of the entrained bed gasifier>1500t dry coal / day / MPa, cyclone separation The number of chambers 20 is a positive integer ≥ (1500t dry coal / day / 0.5MPa) / (1500t dry coal / day / MPa), so the number of cyclone separation chambers 20 in this embodiment is 2; the rest are the same The preparation system of Example 1.

[0127] (2) Preparation method of industrial gas

[0128] Using the preparation method of the above preparation system, the oxygen consumption is 25700Nm 3 / h, the am...

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Abstract

The invention discloses a preparation system of industrial gas and a preparation method of industrial gas. The preparation system comprises a pulverized coal conveying unit, a entrained-flow gasifier,a convection waste heat boiler, a steam drum and a dust removing unit; the entrained-flow gasifer is provided with a gasification chamber, a cyclone separation chamber and a collection chamber; the side wall of the gasification chamber is uniformly provided with first nozzles; the top of the gasification chamber is provided with a first synthesis gas outlet, and the bottom of the gasification chamber is provided with a liquid slag outlet; the cyclone separation chamber is provided with a straight barrel section and a lower cone separation section, the first synthesis gas outlet is communicated with the straight barrel section, the top of the straight barrel section is provided with a second synthesis gas outlet, the bottom of the lower cone separation section is provided with a fly ash outlet, and the cyclone separation chamber is also provided with a cyclone riser leaded out from the straight barrel section; the side wall of the gasification chamber is uniformly provided with secondnozzles; the collection chamber is used for collecting the slag discharged from the liquid slag outlet so as to block the bottom of the gasification chamber from being communicated with the outside. The preparation system and the preparation method have lower investment, lower industrial gas cost, cleaner and stronger coal adaptability.

Description

Technical field [0001] The invention relates to an industrial gas preparation system and an industrial gas preparation method. Background technique [0002] The characteristics of my country's energy resources are the lack of oil and gas resources and the relative abundance of coal. Therefore, coal has become the main energy source for my country's national economic development. my country's widely distributed metallurgy, ceramics, glass, building materials and other industries require a large amount of primary energy for heating in various kilns, making coal not only the main raw material for coal-based chemicals and chemicals in my country, but also an industrial heat source. The existing heat sources in the above-mentioned industries mainly use coal to prepare industrial gas through a certain partial oxidation method for heating in various kilns. [0003] The industrialized coal preparation industrial gas technologies mainly include fluidized bed coal-to-gas technology represen...

Claims

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Application Information

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IPC IPC(8): C10J3/48C10J3/50C10J3/84C10J3/86C10J3/46
CPCC10J3/466C10J3/48C10J3/485C10J3/506C10J3/84C10J3/86C10J2300/1603C10J2300/093C10J2300/0959C10J2300/0956C10J2300/0976C10J2200/152C10J2300/1615Y02P20/129
Inventor 许建良刘海峰代正华于广锁王亦飞龚欣王辅臣陈雪莉梁钦锋郭晓镭赵辉郭庆华陆海峰李伟锋王兴军刘霞龚岩
Owner EAST CHINA UNIV OF SCI & TECH
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