Pressure-bearing type coal gas air preheater

An air preheater and coal-to-gas technology, which is applied in the field of coal chemical industry, can solve the problems of not meeting the process requirements, affecting the heat exchange efficiency, and low pressure in the tube side, so as to improve the utilization rate of heat energy, increase the calorific value of air, The effect of lowering the height of the equipment

Pending Publication Date: 2020-12-11
DORIGHT
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AI Technical Summary

Problems solved by technology

Its disadvantages are: the pressure of the tube side is low, and the tube wall is easy to hang ash, which affects the heat transfer efficiency and cannot meet the process requirements.
[0003] At present, this kind of high-temperature and high-pressure gas-gas heat exchanger is still blank in the coal-to-gas industry.

Method used

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  • Pressure-bearing type coal gas air preheater
  • Pressure-bearing type coal gas air preheater

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Embodiment Construction

[0032] A pressurized coal gas air preheater, comprising: coal gas inlet box 1, serpentine tube 2, heat exchanger body 3, expansion joint 4, coal gas outlet box 5, air inlet header 6, Support 7, inner insulation 8, support 9, air outlet header 10, anti-shock plate 11.

[0033] The installation route of the present invention is:

[0034] Heat exchanger body—inner heat preservation—serpentine tube, anti-shock plate—air inlet and outlet headers—coal gas inlet and outlet boxes. Specific implementation steps:

[0035] 1. The 3 shell sides of the heat exchanger body, the 2 tube sides of the serpentine tube, the air inlet header 6 and the air outlet header 10 respectively complete their respective assembly welding or combined installation, namely:

[0036] 1.1 The heat exchanger body 3 shell and expansion joint 4, support 9, bottom support 7 and upper and lower flanges are assembled and welded before making heat-resistant inner insulation 8;

[0037] 1.2 2 groups of serpentine tubes...

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Abstract

The invention discloses a pressure-bearing type coal gas air preheater. The pressure-bearing type coal gas air preheater is an innovative design of a coal gas air preheater for the coal chemical industry, is developed for adapting to the continuous development of a coal gas production process towards high temperature and high pressure directions, and solves the problems existing in the structure of the original equipment. The pressure-bearing type coal gas air preheater adopts a coil tube as a heat exchange tube pass, the structure is novel, the bearing pressure is high, and field installation, maintenance and repair are facilitated. The equipment is designed, manufactured, inspected and accepted according to relevant requirements of TSG 21-2016 Supervision Regulation on Safety Technologyfor Stationary Pressure Vessel and GB150 Pressure Vessels, so that the manufacturing quality of the equipment is improved, and the development towards standardization and serialization directions is facilitated; and the development of the equipment fills the blank of high-temperature and high-pressure gas-to-gas heat exchangers in the coal gas industry.

Description

technical field [0001] The invention relates to the technical field of coal chemical industry, in particular to a pressure-bearing coal-gas air preheater in the coal-gas production process. Background technique [0002] For a long time, the air preheater has been widely used in the coal-to-gas production process. It mainly uses the high-temperature coal-to-gas produced by separating the tail gas from the reaction furnace through the separator to obtain high-temperature air through heat exchange equipment, and then the tail gas enters the waste heat boiler. High-temperature steam is generated, and the entire heat recovery process achieves the purpose of saving energy and reducing consumption. The air preheater is one of the important equipment for waste heat recovery and utilization on the coal-to-gas production line. It is mainly a shell-and-tube structure. It is characterized in that: the heat exchanger is a normal-pressure high-temperature equipment; the tube-side medium i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D7/08F28F9/00
CPCF28D7/082F28F9/005
Inventor 魏振文吕宏霞于国庆张晓仵杰朱紫龙
Owner DORIGHT
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