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Novel purification technology for producing liquid sulfur dioxide by pure oxygen method

A liquid sulfur dioxide and sulfur dioxide technology, applied in inorganic chemistry, sulfur compounds, chemical instruments and methods, etc., can solve the problems of not meeting the first-class standard, entering sulfur particles, affecting production, etc., to reduce system resistance and improve. Continuity, reducing the effect of the process

Inactive Publication Date: 2012-11-14
CHUYUAN HIGH NEW TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when producing liquid sulfur dioxide by the above method, a large amount of sulfur particles often enter the coke filter, felt filter and process pipeline, which increases the resistance, often needs to be stopped for cleaning, and the coke is replaced, which seriously affects the production. The produced liquid sulfur dioxide residue is less than or equal to 0.08%, which does not meet the first-grade product standard

Method used

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  • Novel purification technology for producing liquid sulfur dioxide by pure oxygen method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Use a pump to pump 0.31T / h of liquid sulfur into the sulfur incinerator, and inject 300m3 / h of oxygen into the sulfur incinerator, and control the temperature at about 850°C for incineration to produce sulfur dioxide gas.

[0021] Press a small amount of sulfur dioxide in the sulfur dioxide storage tank into the gasifier, use 80℃ hot water to heat the liquid sulfur dioxide into a gaseous state, and control the volume flow of sulfur dioxide at 0.15m3 / h according to the amount of sublimed sulfur, and the volume of oxygen from the air separation The flow ratio is 8:1 to mix into a mixed gas. The mixed gas is heated to 410℃ by an electric heating furnace and then sent to the converter to be converted into sulfur trioxide. During the conversion process, the inlet temperature of the converter is controlled at 430°C and the outlet temperature is controlled at ≤600℃.

[0022] Add 98% sulfuric acid in the sulfur reactor to the observation mirror of the reactor, then increase the temp...

Embodiment 2

[0025] Use a pump to pump liquid sulfur 0.52T / h into the sulfur incinerator, and inject 500m3 / h of oxygen into the sulfur incinerator, and control the temperature at about 850°C for incineration to produce sulfur dioxide gas.

[0026] Press a small amount of sulfur dioxide in the sulfur dioxide storage tank into the gasifier, use 80℃ hot water to heat the liquid sulfur dioxide into gaseous state, and control the volume flow of sulfur dioxide at 0.2m3 / h according to the amount of sublimed sulfur, and the volume of oxygen from air separation The flow rate ratio is 8:1 to mix into a mixed gas. The mixed gas is heated to 420℃ by an electric heating furnace and then sent to the converter to be converted into sulfur trioxide. During the conversion process, the inlet temperature of the converter is controlled at 420°C and the outlet temperature is controlled at ≤600℃.

[0027] Add 98% sulfuric acid by mass ratio into the sulfur reactor to the observation mirror of the reactor, then increa...

Embodiment 3

[0030] Use a pump to drive 1.05T / h of liquid sulfur into the sulfur incinerator, and inject 1000m3 / h of oxygen into the sulfur incinerator, and control the temperature at about 850℃ for incineration to produce sulfur dioxide gas.

[0031] Press a small amount of sulfur dioxide in the sulfur dioxide storage tank into the gasifier, and use 80°C hot water to heat the liquid sulfur dioxide into a gaseous state. According to the amount of sublimed sulfur, control the volume flow of sulfur dioxide to 0.4m3 / h, and the oxygen from air separation by volume The flow ratio is 8:1 to mix into a mixed gas. The mixed gas is heated to 430℃ by an electric heating furnace and then sent to the converter to be converted into sulfur trioxide. During the conversion process, the inlet temperature of the converter is controlled at 430°C and the outlet temperature is controlled at ≤600℃.

[0032] Add 98% sulfuric acid by mass ratio into the sulfur reactor to the observation mirror of the reactor, then inc...

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Abstract

The invention relates to a novel purification technology for producing liquid sulfur dioxide by a pure oxygen method, belonging to the field of inorganic chemistry. The technology comprises the following steps of: carrying out catalytic reaction on sublimated sulfur by a sulfur reactor to generate sulfur dioxide, and completing the purification by absorption. Compared with the prior art in which sublimated sulfur is removed by the three-level iron scale filtering, the two-level coke filtering, the three-level felt filtering and the drying absorbing, the novel purification technology can remove sublimated sulfur only by converting, disproportioning and absorbing, so that the technical process can be reduced, and the system resistance can be reduced; and the system can clean the sulfur dust without stopping, so that the production continuity and the product quality can be improved, the residue content of less than or equal to 0.05% is reduced to be less than or equal to 0.005%, and the product cost can be reduced as well.

Description

Technical field [0001] The invention relates to a new purification process for producing liquid sulfur dioxide by a pure oxygen method, and belongs to the field of inorganic chemistry. Background technique [0002] Sulfur dioxide is an important chemical raw material, which is widely used in pesticides, medicine, man-made fibers, dyes, sugar, wine, paper, petroleum processing and metal refining industries. In actual work, in order to facilitate transportation and storage, sulfur dioxide gas is usually processed into liquid form and supplied to users. In this process, the purification of liquid sulfur dioxide produced by the pure oxygen method usually adopts physical methods such as three-stage iron filings filtration, two-stage coke filtration, and three-stage felt filtration to remove elevated sulfur and then pass through a sulfuric acid drying tower to remove water. However, when liquid sulfur dioxide is produced by the above method, a large number of sulfur particles often en...

Claims

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Application Information

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IPC IPC(8): C01B17/50
Inventor 杨鹏郭世建夏协兵毕红
Owner CHUYUAN HIGH NEW TECH GRP
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