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Heat exchanger with single working medium for pressing gas

A technology for heat exchangers and working fluids, which is applied in the types of heat exchangers, indirect heat exchangers, lighting and heating equipment, etc., and can solve the problems of bulky structure and large metal consumption

Inactive Publication Date: 2006-06-14
张天飚 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, its structure is bulky and consumes a lot of metal

Method used

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  • Heat exchanger with single working medium for pressing gas
  • Heat exchanger with single working medium for pressing gas

Examples

Experimental program
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Embodiment Construction

[0008] According to the operating pressure of pulverized coal gasification, it is divided into two types: normal pressure and pressurized. This single working fluid heat exchanger is the key equipment for the recovery of waste heat from pressurized pulverized coal gasification and can be used as a steam superheater and feedwater preheater.

[0009] Such as figure 1 As shown, the high-temperature gas enters the gas channel and scouring the tube bundle formed by the stacked coils in the gas channel. When the coils are flushed outside, convection and radiation heat release processes are generated, heat is released, and the temperature is reduced; -Steam or water first enters the lower annular header and is distributed from the lower annular header to the horizontally placed coils. The working fluid absorbs the heat transferred from the gas during the process of flowing in the coils. After the temperature rises, Collect it in the upper ring header and lead out through the lead-out tu...

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Abstract

The invention discloses monomial working medium heat exchanger used in pressurizing coal gas. It increases heat transfer efficiency, reduces metal consumption and cost. And the running safety factor is high. The invention is tube structure with insulating layer. The tube cavity is formed coal gas flow passage. The insulating layer is formed between inner sleeve and tube. The tube up-down two ends are respectively up interface and down interface. Its features are that the up and down interfaces are respectively set up and down annular header tank; they are respectively set working medium outlet and inlet; the center of the tube is set center tube with sealed up end; annular coil pipe is set between the center tube and inner sleeve; each annular coil pipe is interlinked with the up-down annular header tank to form working medium flow passage; the outer wall of the tube is set bearer, and welded strengthening ring; the section of the strengthening ring can be T or O shape.

Description

Technical field: [0001] The invention is a waste heat recovery equipment equipped with a pulverized coal gasification method. technical background: [0002] At present, my country’s chemical plants that use coal as raw materials are transforming their gas production methods, from the original fixed bed method to the pulverized coal gasification (fluidized bed) method. The temperature of the coal gas produced by the pulverized coal gasification method is very high, mostly exceeding 1000 ℃, while the temperature of the gas entering the process flow is only about 200 ℃. In order to cool the coal gas and also utilize the heat released during the coal gas cooling process, the pulverized coal gasification method needs to be equipped with waste heat recovery equipment. [0003] Currently, the traditional heat exchangers used in the chemical industry are basically shell-and-tube type. Due to the characteristics of gas longitudinal erosion of the fire tube structure, the heat transfer eff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D1/047
Inventor 张天飚鲁雪峰
Owner 张天飚
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