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Ultra-precision concentrated sulfuric acid filtering device and filtering method

A filtration method, concentrated sulfuric acid technology, applied in chemical instruments and methods, semi-permeable membrane separation, membrane technology, etc., can solve problems affecting the quality of concentrated sulfuric acid, achieve perfect instantaneous recoil effect, obvious effect, and uniform porosity and fine effect

Pending Publication Date: 2020-09-01
XINXING DUCTILE IRON PIPES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Incomplete purification will lead to different quality problems in the produced concentrated sulfuric acid, affecting the quality of concentrated sulfuric acid

Method used

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  • Ultra-precision concentrated sulfuric acid filtering device and filtering method
  • Ultra-precision concentrated sulfuric acid filtering device and filtering method
  • Ultra-precision concentrated sulfuric acid filtering device and filtering method

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Embodiment Construction

[0034] Below in conjunction with embodiment the present invention is described in further detail:

[0035] Such as Figure 1 to Figure 4 As shown, a device for ultra-precision filtering concentrated sulfuric acid includes a main body device 1, a first pipeline 2 for the inflow of concentrated sulfuric acid to be filtered is arranged on the lower side of the main body device 1, and a device for ultra-precision filtering the concentrated sulfuric acid to be filtered is arranged inside. The filter element 3, on one side of the upper part, is provided with the second pipe 4 for discharging the concentrated sulfuric acid overflowed after recoiling the filter element 3; There is a fourth pipeline 6 through which the filter residue filtered by the concentrated sulfuric acid is discharged, and the filtered filter residue is compressed into a filter cake, which can be used as raw fuel for sintering and realizes no waste discharge. The filter element 3 is provided with a PM membrane, w...

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Abstract

The invention discloses an ultra-precision concentrated sulfuric acid filtering device. The device comprises a main body device; a first pipeline into which to-be-filtered concentrated sulfuric acid flows is arranged on one side of the lower part of the main body device; a filter element for performing ultra-precision filtering on the to-be-filtered concentrated sulfuric acid is arranged in the main body device; a second pipeline for discharging the concentrated sulfuric acid overflowing after the filter element is backflushed is arranged on one side of the upper part of the main body device;a third pipeline for enabling the filtered concentrated sulfuric acid to flow in or be discharged is arranged on the other side of the upper part of the main body device; a fourth pipeline for discharging filter residues after the concentrated sulfuric acid is filtered is arranged at the bottom of the main body device. According to the ultra-precision concentrated sulfuric acid filtering device ofthe invention, a totally-enclosed working mode is adopted, operations such as uncovering, dismounting and the like are not needed for backflushing and slag discharging of the filter element; a good working environment in a production area is ensured; an ultra-low pressure working mode is adopted during backflushing; normal working pressure is only 0.1 MPa; and energy consumption is only about 30%of that of precision filtering equipment similar to the ultra-precision concentrated sulfuric acid filtering device of the invention.

Description

technical field [0001] The invention relates to the technical field of integrated technology of active coke desulfurization and denitrification equipment, in particular to an ultra-precision filtration concentrated sulfuric acid device and a filtration method. Background technique [0002] At present, in the integrated process technology of activated coke desulfurization and denitrification equipment, the sulfur-rich gas decomposed from the regeneration tower is sent to the acid production through the pipeline for acid production. The gas contains coke powder, dust, metal ions, organic matter and other impurities, which are mainly purified through the first-level and second-level reverse jet washing in the purification process, and the first-level and second-level reverse jet washing can only effectively remove the dust of coke powder , the metal ions and organic matter in the flue gas have not been effectively treated. Incomplete purification will lead to different quality...

Claims

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Application Information

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IPC IPC(8): B01D63/00B01D65/02
CPCB01D63/00B01D65/02
Inventor 马广超
Owner XINXING DUCTILE IRON PIPES CO LTD
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