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Direct air cooling method for shifted gas

A technology of air cooling and gas transformation, applied in heat exchange equipment, heat exchanger types, indirect heat exchangers, etc., can solve the problems of uneconomical, increased operating energy consumption, low gas density, etc., to save energy consumption and The effect of energy cost expense, saving of special facilities, and heat transfer coefficient improvement

Active Publication Date: 2020-09-18
四川省简阳空冷器制造有限公司 +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since chemical industry, especially bulk chemical products, is a traditional industry with low profit margins, it is urgent to build a chemical production line with CO conversion process in water-scarce areas that can greatly save water resource consumption and ensure cooling effect. Method and device for cooling process gas with increased investment cost
[0007] The shift gas is directly fed into the air cooler tube bundle. Due to the low gas density, high flow resistance, and the low heat transfer film coefficient in the tube, the investment cost of the air-cooled tube bundle and the increase in operating energy consumption are uneconomical. So far, the shift gas cooling is still only water cooling

Method used

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  • Direct air cooling method for shifted gas
  • Direct air cooling method for shifted gas
  • Direct air cooling method for shifted gas

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Embodiment Construction

[0062] A coal chemical production line located in a water-scarce area is 1,300 meters above sea level, with a dew point temperature of 23°C and a high-temperature shift gas of 186,000Nm from the soft water preheater 3 / h, absolute pressure 6.5MPa, temperature 70°C, specific heat capacity 0.35kcal / Nm 3 °C, where the volume ratio of saturated water vapor content to dry shift gas is 100:0.7, and cooled down to ≤40 °C. Heat released by high temperature and humidity shift gas: 2383000 kcal / h.

[0063] The air cooler adopts a single tube pass, the resistance drop is ≤0.02MPa, and the windward area is 54m 2 , the wind speed is 2.5m / s, the power consumption of the fan is 22kw, the head of the circulating water pump is 20m, the circulating water volume is 8 tons / hour, and the power consumption is 1.0kw; due to the high pressure of the transformed gas, in order to prevent the leakage of the shaft seal, a magnetically driven shielded pump is used.

[0064] During the high temperature p...

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Abstract

The invention provides a direct air cooling method for shifted gas. High-temperature wet shifted gas is directly sent to air cooling fin tube bundles; shifted gas condensate is sent to the inlet of each fin tube through a circulation pump and a water spray pipe; and by utilizing the characteristic that high-frequency turbulent flow and water brought by high-speed air flow are far higher than the shifted gas in heat conductivity, the film coefficient of heat transfer of the inner wall of the air cooling fin tubes is greatly increased, thereby improving the air cooling effect of the shifted gas,greatly reducing consumption of water resources and power consumption of a fan, and guaranteeing the effect of directly cooling the shifted gas by using air.

Description

technical field [0001] The invention belongs to the field of energy and chemical industry using coal, oil, natural gas, etc. as raw materials, and particularly relates to the CO shift gas and the cooling process technology and equipment for the process gas containing saturated water vapor in the production line in the water-deficient area. Background technique [0002] In energy chemical industry, whether coal, oil or natural gas is used as raw material to produce hydrogen or other chemical products, the production line usually uses gasification, that is, the raw material is converted into CO+H-rich 2 Gas as the main component; purification, that is, the removal of harmful components to the end product; synthesis, that is, the composition of the three major processes of synthesizing the target product; and in the purification process, there is usually a CO conversion process, the purpose is to provide the final product More hydrogen by reacting some or all of the CO in the g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D1/053F28F13/12F28F19/00
CPCF28D1/05316F28F13/12F28F19/00
Inventor 李宁张雄斌刘华伟罗平张清建施明菊孙智杰李开建
Owner 四川省简阳空冷器制造有限公司
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