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Self-cleaning heat exchanger

A heat exchanger and self-cleaning technology, applied in the direction of heat exchanger type, indirect heat exchanger, heat transfer modification, etc., can solve the problems of heat exchanger scaling, circulation difficulty, solid particle separation, etc. The effect of cleaning, enhancing heat transfer and preventing adhesion

Inactive Publication Date: 2020-07-31
天津天大清能环境工程有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a self-cleaning heat exchanger, which fundamentally solves the problem of fouling in the operation of the heat exchanger and the separation and circulation of solid particles, and achieves no scaling and no pollution during the operation of the heat exchanger. Blocking and maintaining the effect of efficient and energy-saving operation of the heat exchanger

Method used

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Examples

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Embodiment example 1

[0044] The self-cleaning heat exchanger described in the patent of the present invention is used to preheat a certain high-hardness brine, and three heat exchangers are operated in series. The monitoring results of the temperature of the fluid at the inlet and outlet of the heat exchanger are as follows figure 2 As shown, it can be seen that when the new heat exchanger runs continuously for 135 days, the outlet temperature of the feed liquid brine basically does not decrease significantly, and the outlet temperature of the preheated brine can fully meet the production process requirements and can be continuously produced. Before the new technology was adopted, when the preheater was running for 30 to 40 days, due to serious fouling, the outlet temperature of the preheated brine dropped significantly, which could not meet the requirements of the production process. The preheater had to be stopped for mechanical cleaning. Heater took more than 3 days. The comparison results sho...

Embodiment example 2

[0046] The self-cleaning heat exchanger described in the patent of the present invention is used to heat the gypsum-type mine brine required by a 300,000-ton / year vacuum evaporation salt production line. It has been proved by long-term continuous operation that the fluidization of solid particles inside the heat exchanger, The circulation and flow are relatively stable, and the equipment is easy to operate and control; the self-cleaning heat exchanger described in the present invention can fully achieve the purpose of scale prevention, descaling and enhanced heat transfer of the gypsum-type mine brine heat exchanger, and can be produced continuously without the need for Stop the vehicle to descale and clean the heat exchanger. By comparing the output statistics, after adopting the heat exchanger of the present invention, under the same condition of steam consumption, the daily increase in output is about 100 tons, that is, the output is increased by about 10%, and there is abou...

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Abstract

The invention relates to a self-cleaning heat exchanger. The self-cleaning heat exchanger comprises a discharge pipeline 1, a solid-liquid separation pipe box 2, a tubular heat exchanger 3, a particlecirculating pipe 4, a particle adjusting valve 6, a guide barrel 7, a material inlet 9 and a particle mixer 10. Self-cleaning of the heat exchanger is carried out through dead-weight outer circulation of solid particles, the problems about scaling in the operation process of the heat exchanger and separation circulation of the solid particles are fundamentally solved, and the effects that no scaling or fouling is generated in the operation process of the heat exchanger, and it is guaranteed that the heat exchanger efficiently runs in an energy-saving manner are achieved. Separation and storage of the solid particles and end sealing of the heat exchanger are combined, so that the structure of the self-cleaning heat exchanger is simplified.

Description

technical field [0001] The patent of the invention relates to the field of chemical equipment, in particular to a self-cleaning heat exchanger. Background technique [0002] In my country's chemical industry, food, pharmaceutical fields, etc., as a common equipment, heat exchangers are widely used. The common heat exchange media are divided into heat exchange between steam and low-temperature material solution, heat exchange between high-temperature material solution and low-temperature material solution, There are many ways of heat exchange between high-temperature flue gas and material solution, and the structural forms are mainly plate type and tube type. [0003] In the actual operation of material solution heat exchange equipment, the biggest problem is scaling, because the material solution contains inorganic substances such as calcium ions, magnesium ions, silicon ions, sulfate ions, carbonates, and organic substances such as protein, starch, and pectin. , in the heat...

Claims

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Application Information

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IPC IPC(8): F28D7/16F28F19/00F28F13/02
CPCF28D7/1607F28F19/002F28F13/02
Inventor 马啸阳韩志刚刘昱彤刘滨华钟子怡
Owner 天津天大清能环境工程有限公司
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