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A sulfuric acid furnace gas purification process device

A technology of furnace gas purification and process equipment, which is applied in the direction of specific gas purification/separation, combined devices, sulfur compounds, etc., can solve problems such as reducing environmental protection risks, and achieve reduced production water consumption, good economic and environmental benefits, and impurity content little effect

Active Publication Date: 2016-05-04
WENGFU (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Reduce environmental risks

Method used

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  • A sulfuric acid furnace gas purification process device

Examples

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Effect test

Embodiment 1

[0018] Take the application of this method in a company's 400,000 tons / year pyrite acid plant as an example. Original process: need to stop and clean 4 to 5 times a year, each cleaning takes 2 to 3 days, the cost of each cleaning is about 5,000 yuan, and the mass percentage of 12% dilute sulfuric acid produced per hour is about 8t / h, all of which are used as wastewater to process. After adopting this method: according to this method, a set of furnace gas purification process equipment has been built, with sulfur dioxide blowing tower 1, dilute acid filter 2, washing tower 3, dilute acid sedimentation tank 4, dilute acid tank 5, dilute acid pump 6 , conical settling tank 7, circulating acid tank 8, washing tower circulating pump 9, acid mud pump 10, cooling tower 11, cooling tower circulating pump 12, acid cooler 13, primary electrostatic demister 14, secondary electrostatic precipitator Composition of mist device 15; sulfur dioxide blowing tower 1, dilute acid tank 5, dilute ...

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Abstract

The invention discloses a sulfuric acid furnace gas purification process device, which mainly consists of a sulfur dioxide blowing tower, a dilute acid filter, a washing tower, a dilute acid settling tank, a dilute acid tank, a dilute acid pump, a conical settling tank, a circulating acid tank, Washing tower circulation pump, acid mud pump, cooling tower, cooling tower circulation pump, acid cooler, primary electric demister, and secondary electric demister; The sulfur dioxide gas decomposed from the dilute acid is recovered to the production system; the liquid and dilute acid are connected to the corresponding towers and tanks by corresponding pumps and pipelines to complete the cleaning of the furnace gas. ; This process is simple, easy to operate, can effectively reduce pipeline and equipment blockage, and at the same time reduce cleaning costs and parking time; the dilute sulfuric acid produced has less impurity content and higher concentration, and can be comprehensively utilized; economic and environmental benefits.

Description

technical field [0001] The invention relates to the technical field of sulfuric acid industry, in particular to a furnace gas purification process device in the production process of pyrite acid production. Background technique [0002] In the pyrite acid production process, in the production of SO 2 During the process of furnace gas, many fine solid particles and impurities enter the SO 2 Furnace gas, and then directly enter the follow-up system to produce sulfuric acid, they will not only cause blockage and corrosion of equipment, but also affect product quality. Therefore, it is necessary to have a prior comment on SO 2 The furnace gas is purified to remove impurities, and then enters the subsequent process to produce standard sulfuric acid. [0003] Most of the existing pyrite acid production plants use tower-tank integration or tower-tank separation process, and use dilute sulfuric acid to wash and purify the furnace gas. During the purification process of the furna...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D47/00B01D50/00B01D36/04
CPCB01D36/04B01D47/00B01D50/00C01B17/56C01B2210/0009
Inventor 宋光辉
Owner WENGFU (GRP) CO LTD