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L-shaped horizontal type rotary wave bed coal gasification production process and system

A production process and production system technology, applied in the field of L-type horizontal rotary wave bed coal gasification production process and its special coal gasification production system, can solve the problem of stable bed, low energy consumption, large daily gas production of spouted bed, and equipment operation Difficult to control and other issues to achieve the effects of low energy consumption, low operating costs, and long equipment life

Active Publication Date: 2013-08-14
山东联合能源技术有限公司
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides an L-type horizontal rotary wave bed coal gasification production process in order to overcome and make up for the shortcomings of the existing fixed bed, such as small gas production, high energy consumption of the spouted bed, low cold gas efficiency, and high operating cost. This process greatly improves performance indicators such as coal utilization efficiency, carbon conversion rate, refrigerant gas efficiency, and pollution emission control, and is suitable for industries such as combined cycle power generation, urban residential gas industry, and transportation gas supply.
[0006] The present invention also provides a special L-type horizontal rotary wave bed coal gasification production system for this process. This coal gasification production system absorbs the advantages of stable bed operation, low energy consumption and large daily gas production of spouted bed. The requirements are extremely broad, which greatly reduces the construction cost and operating cost, and overcomes the defects of difficult operation control and high construction cost of the equipment used in the existing coal gasification process

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  • L-shaped horizontal type rotary wave bed coal gasification production process and system
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  • L-shaped horizontal type rotary wave bed coal gasification production process and system

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Effect test

Embodiment 1

[0033] like figure 1The L-shaped horizontal rotary wave bed coal gasification production system shown includes three gasifiers connected in sequence. The first-stage gasifier 1 is a vertical Furnace 2 is a vertical gasifier mainly used to precipitate tar in coal, and gasifier 3 is a horizontal rotary furnace for full gasification of coal; among them, the bottom of the first gasifier and the second gasifier The top of the gasifier is connected, the bottom of the secondary gasifier is connected with the top of the third-stage gasifier, the top of the third-stage gasifier is higher than the bottom, and can form an angle of 5 to 25° with the ground, and the angle can be adjusted according to the gasification The amount of coal is properly adjusted; the top and bottom of each stage of the gasifier are equipped with a pressure lock 14, which can not only adjust the flow of coal, but also connect the stages of the gasifier together. The upper part of each stage gasifier is equipped ...

Embodiment 2

[0036] Taking ordinary bituminous coal with 5500-6000 kcal as an example, the coal gasification system of Example 1 is used for coal gasification production. The three-stage horizontal gasifier forms an angle of 5°-10° with the ground, and the process includes at least the following steps:

[0037] A. Coal Staged Gasification

[0038] (1) Pulverize the bituminous coal to a particle size of 0.1-6mm, and the pulverized bituminous coal can contain 20%-30% coal powder; Add 40-50 tons of flow per hour to the primary gasifier for the first gasification, so that the volatiles in the bituminous coal can be fully analyzed; the pressure in the furnace is 10-11 kg, the temperature is 400 ° C, and the oxygen flow rate is 4000 -5000m 3 / h and water vapor flow rate is 3-3.5 tons / hour;

[0039] (2) The bituminous coal enters the secondary gasifier from the primary gasifier, where the gasification is carried out for the second time, so that the tar in the bituminous coal is fully separated...

Embodiment 3

[0044] Taking coal gangue with a coal content of 30% as an example, the coal gasification system of Example 1 is used for coal gasification production. The three-stage gasifier forms an angle of 15-25° with the ground. The process includes at least the following steps:

[0045] A. Coal Staged Gasification

[0046] (1) The gangue is crushed to a particle size of 0.1-6mm, and the crushed gangue can contain 20%--30% coal powder; then the crushed gangue is gasified at a daily rate of 3,000 tons / day According to the flow rate of 120-140 tons per hour, it is added to the primary gasifier for the first gasification, so that the volatile matter in the coal gangue can be fully analyzed; the pressure in the furnace is 10 kg, the temperature is 400-450 ° C, and the oxygen flow rate is 8000-9000m 3 / h and water vapor flow rate is 6-6.5 tons / hour;

[0047] (2) Coal enters the secondary gasification furnace from the primary gasification furnace, and is gasified for the second time in the...

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Abstract

The invention discloses an L-shaped horizontal type rotary wave bed coal gasification production process which comprises the following steps of: crushing coal, adding into a vertical type gasification furnace, and separating out volatile matter; introducing the coal into a next gasification furnace, and separating out tar; fully gasifying the coal in a horizontal type rotary furnace; respectivelypurifying gases produced in all gasification furnaces, and comprehensively desulfurizing to obtain a clean gas. The process greatly increases the performance indexes of coal utilization rate, carbon conversion rate, coolant gas efficiency, and is applicable to the industries of combined cycle generation, urban resident gas supply, industrial gas supply, transportation gas supply. The invention also discloses a production system used by the process. The system absorbs the advantages of a fixed bed process, a fluidized bed process and a spray bed process and also has the advantages of stable operation, low energy consumption, great daily coal gasification quantity, high gas production rate and wide requirements for coal type. Thus, the construction cost and the operation cost of the coal gasification production system are greatly reduced.

Description

technical field [0001] The invention relates to a coal gasification production method and a special coal gasification equipment system thereof, in particular to a coal gasification production method with a large daily coal volume, large gas production, high carbon conversion rate, high cold gas efficiency, low energy consumption, and gas The L-type horizontal rotary wave bed coal gasification production process and its special coal gasification production system for low-quality coal. Background technique [0002] The double pressure of excessive consumption of coal resources and environmental pollution is increasing day by day. 80% of electricity in China, the United States, India, etc. comes from direct coal combustion. Rapidly changing the traditional and backward technology of coal-fired power plants (boilers directly burn coal and steam indirectly) is an important breakthrough point for energy saving and emission reduction, curbing climate change, and developing a low-c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10J3/46C10J3/48C10J3/84C10J3/60
CPCY02E20/18
Inventor 张长东
Owner 山东联合能源技术有限公司
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