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Water-cooled wall gasification furnace adopting natural circulation and forced circulation separately and cooling method

A technology of forced circulation and natural circulation, applied in the field of water-cooled wall gasifier and cooling, can solve the problems of water-cooled wall easy to burn, maintenance quality cannot be guaranteed, and maintenance is difficult

Active Publication Date: 2022-04-26
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems in the prior art that the water-cooled wall of the top round table section of the natural circulation water-cooled wall gasifier is easy to burn, and the maintenance after burning is difficult, and the maintenance quality cannot be guaranteed, and further provides a separate adopting natural gasifier. Circulation and forced circulation water-cooled wall gasifier and cooling method

Method used

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  • Water-cooled wall gasification furnace adopting natural circulation and forced circulation separately and cooling method
  • Water-cooled wall gasification furnace adopting natural circulation and forced circulation separately and cooling method
  • Water-cooled wall gasification furnace adopting natural circulation and forced circulation separately and cooling method

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specific Embodiment approach 1

[0041] Specific implementation mode one: combine Figure 1 to Figure 3 Describe this embodiment mode, a water-cooled wall gasifier using natural circulation and forced circulation separately in this embodiment, the water-cooled wall gasifier device includes a gasifier body, and the gasifier body includes a circular platform section water-cooled wall 1. The water cooling wall 5, the upper header 6 and the lower header 8 in the cylindrical section, the water cooling wall 1, the upper header 6, the water cooling wall 5 in the cylindrical section and the lower header 8 in the circular table section are coaxially arranged in sequence from top to bottom in the vertical direction;

[0042] The water cooling wall 1 of the circular platform section is located at the top of the gasifier, and the water cooling wall 1 of the circular platform section is a hollow circular frustum-shaped structure with an open bottom. The water cooling wall 1 of the circular platform section is an independen...

specific Embodiment approach 2

[0045] Specific implementation mode two: combination Figure 1 to Figure 3 Describe this embodiment, the height of the conical section water wall 1 of this embodiment is h 1 , the height h of the water-cooled wall 5 of the cylindrical section 2 , satisfy h 2 > h 1 , and h 2 =(5~20)h 1 . Other compositions and connections are the same as in the first embodiment.

specific Embodiment approach 3

[0046] Specific implementation mode three: combination Figure 1 to Figure 3 Describe this embodiment, the generatrix length L of the conical section water-cooled wall 1 of this embodiment satisfies L=(1.15~3)h 1 . Other compositions and connections are the same as those in Embodiment 1 or Embodiment 2.

[0047] Specific implementation mode four: combination Figure 1 to Figure 3 Illustrate this embodiment, the quantity of the steam drum 2 of this embodiment is one or two, when the quantity of steam drum 2 is one, the same steam drum 2 is connected with the cylindrical section water cooling wall 5 and the round table section water cooling wall 1; When the number of drums 2 is two, the water cooling wall 5 of the cylindrical section and the water cooling wall 1 of the conical section are respectively connected to the corresponding independent steam drums 2 . In this way, the water-cooled wall 5 of the cylindrical section and the water-cooled wall 1 of the conical section can...

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Abstract

The invention discloses a water-cooled wall gasification furnace adopting natural circulation and forced circulation separately and a cooling method, and relates to the field of gasification furnace equipment. The problems that in the prior art, a top circular truncated cone section water-cooled wall of a natural circulation water-cooled wall gasification furnace is prone to burning loss, the maintenance difficulty is high after burning loss, and the maintenance quality cannot be guaranteed are solved. A circular truncated cone section water cooling wall, an upper header, a cylindrical section water cooling wall and a lower header are sequentially arranged from top to bottom, the circular truncated cone section water cooling wall is located at the top of the gasification furnace and is an independent coil pipe type water cooling wall, the cylindrical section water cooling wall is located on the lower middle portion of the gasification furnace, and the cylindrical section water cooling wall is an independent vertical shell and tube type water cooling wall. The upper end and the lower end of each vertical tube nest of the cylindrical section water cooling wall are connected with an upper header inlet and a lower header outlet respectively. The top circular truncated cone section of the gasification furnace independently adopts the forced circulation water cooling wall which is higher in working medium flow speed, larger in convective heat transfer coefficient and stronger in heat exchange effect, and the problem that the top circular truncated cone section water cooling wall is prone to burning loss is solved.

Description

technical field [0001] The invention relates to the field of gasification furnace equipment, in particular to a water-cooled wall gasification furnace and a cooling method using natural circulation and forced circulation separately. Background technique [0002] "Rich in coal, poor in oil, and low in gas" is the basic feature of my country's energy structure. This feature determines that my country's coal energy will occupy a dominant position in energy production and consumption for a long time. How to use coal resources cleanly and efficiently It has become an important direction to achieve the goal of carbon neutrality. Coal gasification technology is an efficient and clean clean coal technology. The current coal gasification technology is mainly divided into four categories: moving bed gasification, fluidized bed gasification, entrained flow gasification and molten bed gasification. Among them, entrained bed gasification technology has become the main development direct...

Claims

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Application Information

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IPC IPC(8): C10J3/72
CPCC10J3/72Y02P20/10
Inventor 李争起路跃刘政姜广飞陈智超
Owner HARBIN INST OF TECH
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