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Cooling method for blower in sulfuric acid production

A sulfuric acid production and blower technology, which is applied in chemical instruments and methods, inorganic chemistry, sulfur compounds, etc., can solve the problems of blower operating temperature rise, equipment maintenance difficulty, product quality decline, etc., to save equipment investment and pipeline installation The effect of simple method and few process changes

Inactive Publication Date: 2016-03-23
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This passive solution will not only increase a lot of equipment costs and increase the difficulty of equipment maintenance, but also affect normal production and even lead to a decline in product quality
The high operating temperature rise of the blower is a common problem in sulfuric acid plants, and a more convenient and economical solution is urgently needed

Method used

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  • Cooling method for blower in sulfuric acid production

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Embodiment

[0016] Embodiment: This embodiment is attached figure 1 Shown, SO 2 The flue gas passes through SO from the drying tower outlet (10) 2 The flue gas pipeline (4) is blown into the heat exchanger (3) by the blower (2). Due to the long-term work, the temperature of the blower (2) equipment increases, and the anti-surge valve (9) is opened to make part of the SO 2 The flue gas enters the inlet (11) of the drying tower through the cooling return pipeline (6), so that the SO in the drying tower (1) 2 The flue gas temperature drops, and then enters the blower's SO 2 The flue gas temperature drops, thereby realizing the temperature drop of the blower equipment itself.

[0017] The automatic cooling of the air blower is realized through the adjustment method of this embodiment.

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Abstract

The present invention is applied to the technical field of sulfuric acid production apparatuses, and relates to a blower cooling method for a large sulfuric acid production apparatus. The apparatus is characterized by, on a basis of an original flue gas sulfuric acid-making conversion workshop section flow, connecting a loop pipe, the diameter of which is about half of a main pipeline on a pipe between the blower outlet and a heat exchanger, the loop pipe connected to a drying tower flue gas inlet pipe, and under a circulating action of the blower, effectively reducing an operation temperature of the blower by nature cooling of the loop pipe. The loop pipe should be mounted with an anti-surge valve, or the associated valve is provided by the blower manufacturer. The valve can be shut off when the blower temperature is not high; when the blower needs to be cooled, the valve is shut on. The cooling method solves problems that the temperature rise of blower operation is too high, flow variation is less, a pipe mounting method is simple and cost consumption is small, and is a convenient and economic improvement scheme.

Description

technical field [0001] The invention is applied to flue gas acid production projects, relates to the process design of the conversion section, and is generally applied to relatively large-scale flue gas acid production projects. Background technique [0002] In the design process of the conversion section of the flue gas acid production project, the blower extracts the sulfur dioxide flue gas from the drying tower of the dry suction section, blows it into the heat exchanger of the conversion section for a series of temperature raising and heat exchange processes, and then enters the converter SO in 2 → SO 3 The transformation reaction, thus realizing the SO 2 flue gas to H 2 SO 4 the transformation process. In the whole production process, because the blower needs to work continuously for a long time, the operating temperature will continue to rise. The larger the blowing volume and the longer the blowing time, the higher the temperature rise. The temperature rise of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B17/74
Inventor 李颖魏兰江碧清张雪杰徐晓燕张成昆吴英来罗娟赵建鑫陈英斌李皓瑜
Owner CHINA PETROLEUM & CHEM CORP
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