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Automatic temperature regulating method of high-temperature flue gas for metal heat exchanger

A high-temperature flue gas and heat exchanger technology, applied in heat exchange equipment, lighting and heating equipment, etc., can solve problems such as affecting production and safe operation of equipment, local weld cracking, heat exchanger deformation, etc., without daily maintenance. , prolong the service life, the effect of simple structure

Active Publication Date: 2013-04-10
ACRE COKING & REFRACTORY ENG CONSULTING CORP DALIAN MCC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

More seriously, the heat-resistant steel of the heat exchanger is greatly reduced in strength under the action of high temperature, causing deformation of the heat exchanger, or local weld cracking due to excessive stress, which seriously affects the safe operation of production and equipment.

Method used

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  • Automatic temperature regulating method of high-temperature flue gas for metal heat exchanger
  • Automatic temperature regulating method of high-temperature flue gas for metal heat exchanger
  • Automatic temperature regulating method of high-temperature flue gas for metal heat exchanger

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Embodiment Construction

[0017] The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing:

[0018] See Figure 1 ~ Figure 3 , a high-temperature flue gas automatic temperature regulation device for metal heat exchangers, including a cooling medium supply unit 1, an automatic flow control unit 3, an automatic temperature regulation body 4, an atomizing nozzle 5, a temperature detection unit 9 and a logic control unit 10. The cooling medium supply unit 1 is used to send liquid or gaseous cooling medium such as demineralized water and compressed air into the metal heat exchanger through the delivery pipe; the automatic flow control unit 3 is used to detect and automatically control the delivery flow of the cooling medium; the temperature detection unit 9 includes an inlet temperature-measuring thermocouple 6 and an outlet temperature-measuring thermocouple 7, which are respectively used to detect the inlet temperature of high-temperature f...

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Abstract

The invention relates to an automatic temperature regulating method of high-temperature flue gas for metal heat exchanger. The automatic temperature regulating method is applied to kilns in the industries of metallurgy, petrifaction, building materials and the like. According to the automatic temperature regulating method disclosed by the invention, a cooling medium is supplied by a cooling medium supplying unit; and the flow of the cooling medium added into the exchanger is automatically controlled by a logic control unit, so that the temperature of flue gas in the heat exchanger meets the requirement of inlet temperature. Compared with the prior art, the automatic temperature regulating method disclosed by the invention has the advantages that: under the condition of not changing traditional equipment, the temperature of waste gas at an inlet of the heat exchanger can be automatically regulated, the requirement of the metal exchanger on the temperature of gas at the inlet is met, the safe operation of the equipment is ensured and the service life of the equipment is prolonged.

Description

technical field [0001] The invention relates to a flue gas automatic temperature adjustment method for a metal heat exchanger used in kilns in metallurgy, petrochemical, building materials and other industries to recover waste heat from high-temperature flue gas. Background technique [0002] The metal heat exchanger used to recover the waste heat of high-temperature flue gas discharged from the kiln is widely used in metallurgy, petrochemical, building materials and other industries due to its advantages of less investment, compact equipment structure, small footprint, and less maintenance. However, the metal heat exchanger has certain restrictions on the temperature of the inlet high-temperature flue gas, and the general temperature cannot exceed 800 °C. Otherwise, the service life of the metal heat exchanger will be reduced. More seriously, the heat-resistant steel of the heat exchanger is greatly reduced in strength under the action of high temperature, causing deformat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28F27/00
Inventor 张超赵宝海张金旭杨耕桃白城
Owner ACRE COKING & REFRACTORY ENG CONSULTING CORP DALIAN MCC
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