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Gas phase heating furnace and its application in chemical industry

A heating furnace and gas phase technology, which is applied to the application of gas phase heating furnace in the chemical industry and the field of gas phase heating furnace, can solve the problems of difficult processing and manufacturing, large pressure drop of strengthened heat transfer tubes, and high cost and high cost.

Active Publication Date: 2018-12-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] Although there are many types of enhanced heat transfer devices improved by tubular heat exchange tubes, and they are widely used, these existing devices are difficult to manufacture, cost high, and long-term operation is also a bottleneck, and the strengthening of the above structures The pressure drop of the heat transfer tube is large

Method used

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  • Gas phase heating furnace and its application in chemical industry
  • Gas phase heating furnace and its application in chemical industry
  • Gas phase heating furnace and its application in chemical industry

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0107] Taking a continuous reforming device with an annual output of 1 million tons / year as an example, the device includes a reforming heating furnace, which is a gas-phase heating furnace. According to a preferred embodiment of the present invention, the reforming The device is improved. Under the same process conditions, a comparative experiment was carried out using a reforming furnace according to the prior art (there is no twisted sheet in the heat exchange tube of the radiant section) and a reforming furnace according to the present invention. Wherein, in the reforming heating furnace according to the present invention, two first enhanced heat transfer elements are arranged in the heat exchange tube of the reforming heating furnace, the twist ratio of the enhanced heat transfer element is 2.5, and the length is 255 mm. The element and the heat exchange tube are connected by welding, and the two enhanced heat transfer elements are evenly distributed. The process paramet...

Embodiment 2

[0111] Taking the 85,000 tons / year ethylene dichloride cracking furnace as an example, the ethylene dichloride cracking furnace is a gas phase heating furnace, and the ethylene dichloride cracking furnace is improved according to a preferred embodiment of the present invention. Under the same process conditions, a comparative experiment was carried out by utilizing the ethylene dichloride cracking furnace according to the prior art (with no twisted sheet in the heat exchange tube of the radiant section) and the ethylene dichloride cracking furnace according to the present invention. The technological parameter of experimental result is as shown in table 2, under the condition that inlet temperature and outlet temperature are identical and experiment period is identical, the processing capacity of dichloroethane cracking furnace according to the present invention has increased by 2.7%.

[0112] Table 2 Process parameters of dichloroethane cracking furnace comparison experiment ...

Embodiment 3

[0115] Taking the 3000 standard cubic meter / hour hydrogen production device as an example, the hydrogen production device includes a hydrogen production heating furnace, the hydrogen production heating furnace is a gas phase heating furnace, and the hydrogen production heating furnace is improved according to a preferred embodiment of the present invention . Under the same process conditions, a comparative experiment was carried out using a hydrogen production heating furnace according to the prior art (there is no twisted sheet in the heat exchange tube of the radiant section) and a hydrogen production heating furnace according to the present invention. The process parameters of the experimental results are shown in Table 3. Under the conditions of the same inlet temperature and outlet temperature and the same experimental period, the processing capacity of the hydrogen production heating furnace according to the present invention increased by 3%.

[0116] Table 3 Process par...

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Abstract

The invention discloses a gas phase heating furnace, the gas phase heating furnace comprises a radiant section, the radiant section comprises a heat exchange tube (10), wherein a reinforcement heat transfer element is arranged in the heat exchange tube (10), the reinforcement heat transfer element comprises a distortion sheet, and the apertures are provided on the distortion sheet. The invention also provides an application of the gas phase heating furnace in the chemical field. According to the technical scheme, the reinforcement heat transfer element is arranged in the heat exchange tube of the radiant section of the gas phase heating furnace, the resistance is low, the thermal coefficient is relatively high, the enhancement of heat transfer is reached, the fuel amount is reduced, high grade energy is recovered, the catalytic reforming yield is ensured, and exploitativeness during an industrial process is increased.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a gas-phase heating furnace and the application of the gas-phase heating furnace in the chemical industry. Background technique [0002] In the field of chemical engineering, it usually involves the situation that the reactant substance is in the gas phase. [0003] Catalytic reforming techniques, for example, involve the heating of gas-phase materials. Catalytic reforming is an important refining process for producing high-octane gasoline and aromatics from naphtha. "Reforming" is the process of rearranging hydrocarbon molecules into new molecular structures. Under the action of catalysts, naphthenes and alkanes are converted into aromatics and isoparaffins, and steam is generated at the same time. Since the reforming reaction is an endothermic reaction, it is carried out in an adiabatic reactor, and the required heat is generally provided by a heating furnace. [0004] In ad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G35/04F28F1/40
CPCY02P20/10
Inventor 刘俊杰王国清张永刚周先锋张利军杜志国张兆斌周丛
Owner CHINA PETROLEUM & CHEM CORP