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Device and process for producing sulfuric acid

A technology for preparing sulfuric acid, which is applied in the field of sulfuric acid preparation equipment and technology, can solve the problems of long process, high energy consumption, and large investment, and achieve the effects of high recovery efficiency, low energy consumption, and high environmental protection indicators

Active Publication Date: 2019-07-09
HARBIN BOAO ENVIRONMENTAL TECHNOLOGY CO LTD
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AI Technical Summary

Problems solved by technology

Although the sulfur recovery process is mature and the quality of sulfur is stable, the process is long, the investment is large, the energy consumption is high, and it can only handle high-concentration acid gas

Method used

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  • Device and process for producing sulfuric acid
  • Device and process for producing sulfuric acid
  • Device and process for producing sulfuric acid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0055] The scale of the device is 22,500 tons / year, and the raw material is 1354kg / h of refinery acid gas. The acid gas is combusted through the combustion furnace 1. The temperature of the combustion furnace is 1000°C and the pressure is 3Kpa(g). After heating to 230°C, send it to the combustion furnace. The temperature of the process gas at the outlet of the combustion furnace 1 is controlled at 440°C by the heat exchanger 2, and the hot process gas is sent to the reactor 3. The inlet pressure of the reactor 3 is 2.5KPa(g), the outlet pressure is -2KPa(g), and the outlet pressure Temperature 270°C, SO in reactor 3 2 Convert SO 3 The conversion rate was 98%.

[0056] The process gas at the outlet of reactor 3 enters the condenser 4, and the process gas is cooled to 256°C, 90°C, and 75°C through the glass tube heat exchanger from bottom to top, and the 2680kg / h high-concentration sulfuric acid is cooled in the glass tube heat exchanger shell The process is condensed and flo...

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Abstract

The invention provides a device for producing sulfuric acid. The device for producing sulfuric acid comprises a combustion furnace, a reactor, a condenser and an activated carbon reaction bed which are sequentially connected through a pipeline, wherein the combustion furnace is used for burning a raw material, a heat exchanger is further arranged at the position, near a gas outlet, of the interiorof the combustion furnace, and the heat exchanger is used for cooling high-temperature gas obtained through combustion in the combustion furnace; the reactor is used for performing a catalytic oxidization reaction on the gas obtained after cooling is performed through the heat exchanger, the condenser is used for converting gas obtained after catalysis is performed by the reactor into sulfuric acid and performing condensation and concentration, and the activated carbon reactor is used for oxidizing residual SO2 gas; and exhaust gas is discharged through a chimney. Furthermore, the invention also provides a sulfuric acid preparation process which adopts the device for producing sulfuric acid. The device and process for producing sulfuric acid have high recovery efficiency of total sulfur,low energy consumption of long-cycle operation, a small device occupied area and a high index of environmental protection.

Description

technical field [0001] The invention belongs to the technical field of sulfuric acid preparation, and in particular relates to a sulfuric acid preparation equipment and process. Background technique [0002] At present, acid gas from refineries in my country and low-temperature methanol-washed acid gas from coal chemical industry are mainly sent to the sulfur recovery unit for sulfur production. The sulfur-containing tail gas of the unit needs to be further incinerated to recover the remaining sulfur so that the flue gas emission meets environmental protection requirements. Although the sulfur recovery process is mature and the quality of sulfur is stable, the process is long, the investment is large, the energy consumption is high, and it can only handle high-concentration acid gas. Therefore, new equipment and processes are needed to efficiently prepare sulfuric acid using refinery acid gas, coal chemical low-temperature methanol washing acid gas or liquid sulfur as raw ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B17/80F22B1/06
CPCC01B17/80F22B1/06Y02P20/129
Inventor 范振鲁刘敏房崇杨志军王明明赵茂盛邓学森陈越
Owner HARBIN BOAO ENVIRONMENTAL TECHNOLOGY CO LTD
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