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Bottoms combustion air preheater system and method of ethylene cracking furnace

An ethylene cracking furnace and air preheating technology, which is applied in combustion methods, lighting and heating equipment, indirect carbon dioxide emission reduction, etc., can solve the problems of large operating flexibility and lax system working parameters, so as to reduce power consumption and save fuel Ease of consumption, use, maintenance and repair

Inactive Publication Date: 2008-10-29
BEIJING HANGHUA ENERGY SAVING ENVIRONMENTAL PROTECTION TECH CO LTD
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AI Technical Summary

Problems solved by technology

[0006] 4. This kind of system has great flexibility in operation, and requires that the working parameters of the system are not strict. For example, seasonal changes in the amount and presence of heating medium, and changes in the process parameters of the factory area cause changes in the flow of heating medium. This energy-saving system can be used very well. adapt to this change
[0008] As far as we know, there are no reports of similar new energy-saving methods at home and abroad with the above-mentioned technical characteristics. This point has been proved by searching relevant materials at home and abroad.

Method used

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  • Bottoms combustion air preheater system and method of ethylene cracking furnace
  • Bottoms combustion air preheater system and method of ethylene cracking furnace
  • Bottoms combustion air preheater system and method of ethylene cracking furnace

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Embodiment Construction

[0029] Shown in Fig. 1, a kind of ethylene cracking furnace bottom burner air preheating system and method, mainly by preheater 1, steam trap 11, drain pump 12 or centrifugal pump 13 form, its method comprises the following steps:

[0030] 1. Introduce the balanced low-pressure vent steam 14 in the plant area into the preheater 1, and the preheater 1 works under negative pressure working conditions. Using the negative pressure margin of the cracking furnace furnace, the ambient cold air is sucked into the preheater 1, After turning into hot air, it enters the burner and then enters the furnace;

[0031] 2. After the low-pressure venting steam passes through the preheater 1 with a certain area and the steam trap 11 matching the design of the preheater, the flow rate of the low-pressure venting steam can be automatically adjusted according to the change of the ambient temperature;

[0032] 3. After the steam turns into condensate, the internal energy of the steam’s own pressure ...

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Abstract

The present invention is air preheating system and method for bottom combustor in ethylene cracking furnace. Cold air may be preheated in preheater with low pressure blow-down steam after balance in plant side, circulating chilling water for cracking furnace and condensing effluent from plant side as heating medium. The present invention utilizes the latent energy of available apparatus with few increase in apparatus without need of automatic control system to result in obvious energy saving effect.

Description

technical field [0001] The invention relates to an energy-saving system for air preheating by using the waste heat of the heating medium, especially the low-pressure vented steam after balance in the factory area, or the condensate in the factory area before entering the water treatment workshop, or the quenching water in the circulation system of the cracking furnace itself Wait for the waste heat of the heating medium to heat the air of the burner at the bottom of the cracking furnace, so as to reduce the fuel consumption of the cracking furnace and save energy. Background technique [0002] In the technical field, people want to use the waste heat of the heat medium in the plant area for energy-saving design, such as using the flue gas of the cracking furnace as the heating source, etc., but it is necessary to increase additional energy-consuming equipment, such as blowers and induced draft fans, booster pumps and others. Auxiliary equipment, etc., and the exhausted flue ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23L15/00
CPCY02E20/34
Inventor 袁崇伦伍锐钱永康刘悦
Owner BEIJING HANGHUA ENERGY SAVING ENVIRONMENTAL PROTECTION TECH CO LTD
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