Vacuum belt filter leaching method

A vacuum belt and filter technology, applied in the direction of filtration and separation, separation methods, chemical instruments and methods, etc., can solve the problems of long filter cloth length, small leaching coverage area, high water content of sulfur paste, and improve the spraying effect , the effect of maintaining vacuum

Active Publication Date: 2018-12-21
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The vacuum belt filter rinsing device disclosed in this patent document, although the impurities in the leaching solution are not easy to accumulate in the rinsing hopper, which makes the rinsing hopper easy to clean, but there are also large droplets of washing liquid and a small distribution angle, which makes the leaching The problem of small washing coverage area

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A vacuum belt filter rinse method, comprising the following steps:

[0042] a. On the fixed slot of the vacuum belt filter, the spraying device is fixedly installed through the screw, and the two rows of wide-angle fan-shaped spray nozzles 1 of the spraying device are arranged alternately above the filter cake;

[0043] b. Adjust the nozzle angle of the wide-angle fan-shaped spray nozzle 1 to 60°, set the pressure drop to 0.2Mpa, and the spray volume of a single wide-angle fan-shaped spray nozzle 1 is 0.02m 3 / h, the ratio of flushing water to sulfur is 3:5;

[0044] c. Turn on the primary sprayer 2 of the spraying device, the height of the flushing water is 50mm, and the flushing water volume is 0.2m 3 / h, the spray particle size is 50um, and the filter cake is sprayed and cleaned at the first stage; then the second sprayer 3 is turned on, and the height of the flushing water is 80mm, and the flushing water volume is 0.4m 3 / h, the spray particle size is 150um, and t...

Embodiment 2

[0047] A vacuum belt filter rinse method, comprising the following steps:

[0048] a. On the fixed slot of the vacuum belt filter, the spraying device is fixedly installed through the screw, and the two rows of wide-angle fan-shaped spray nozzles 1 of the spraying device are arranged alternately above the filter cake;

[0049] b. Adjust the nozzle angle of the wide-angle fan-shaped spray nozzle 1 to 110°, set the pressure drop to 0.3Mpa, and the spray volume of a single wide-angle fan-shaped spray nozzle 1 is 0.05m 3 / h, the ratio of flushing water to sulfur is 3:5;

[0050] c. Turn on the first-level sprayer 2 of the spraying device, use the height of the flushing water to be 105mm, and spray the particle size to 200um to perform the first-level spray cleaning on the filter cake; then turn on the second-level sprayer 3, and use the height of the flushing water to be 105mm , flushing water volume is 0.45m 3 / h, the spray particle size is 200um, and the filter cake is subject...

Embodiment 3

[0056] A vacuum belt filter rinse method, comprising the following steps:

[0057]a. On the fixed slot of the vacuum belt filter, the spraying device is fixedly installed through the screw, and the two rows of wide-angle fan-shaped spray nozzles 1 of the spraying device are arranged alternately above the filter cake;

[0058] b. Adjust the nozzle angle of the wide-angle fan-shaped spray nozzle 1 to 120°, set the pressure drop to 0.4Mpa, and the spray volume of a single wide-angle fan-shaped spray nozzle 1 is 0.08m 3 / h, the ratio of flushing water to sulfur is 3:5;

[0059] c. Turn on the primary sprayer 2 of the spraying device, the height of the flushing water is 120mm, and the flushing water volume is 0.3m 3 / h, the spray particle size is 220um, and the filter cake is sprayed and cleaned at the first stage; then the second sprayer 3 is turned on, and the height of the flushing water is 110mm, and the flushing water volume is 0.5m 3 / h, the spray particle size is 220um, an...

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Abstract

The invention discloses a vacuum belt filter leaching method, and belongs to the field of wet-process desulfurization production. The vacuum belt filter leaching method is characterized by comprisingthe following steps: a, mounting a spraying device on a vacuum belt filter, and arranging two rows of wide-angle fan-shaped spray nozzles of the spraying device above a filter cake alternatively in aspaced mode; b, regulating the angles of the spray nozzles of the wide-angle fan-shaped spray nozzles to be 60-120 degrees, setting pressure drop to be 0.2-0.4 Mpa, controlling water spraying amount of single wide-angle fan-shaped spray nozzle to be 0.02-0.08 m<3>/h, and controlling a ratio of flushing water amount to sulphur amount to be 3 to 5; and c, starting a primary sprayer of the spraying device, performing primary spraying cleaning on the filter cake; starting a secondary sprayer, performing secondary spraying cleaning on the filter cake; and finally starting a tertiary sprayer, performing tertiary spraying cleaning on the filter cake. The vacuum belt filter leaching method can guarantee vacuum degree of filter cloth, reduces moisture content of sulphur paste, gains balance betweenthe leaching effect and water usage mount, and realizes the good energy-saving environment-friendly effect.

Description

technical field [0001] The invention relates to the technical field of wet desulfurization production, in particular to a vacuum belt filter washing method. Background technique [0002] The vacuum belt filter is a high-efficiency equipment that uses filter cloth as the filter medium and makes full use of the gravity of the material and vacuum suction to achieve solid-liquid separation. advanced features. Moreover, the operation is simple and the degree of automation is high, so it is widely used in metallurgy, mining, papermaking, food, pharmaceutical and other industrial fields. [0003] The vacuum belt filter uses an integral annular rubber belt as a vacuum chamber. The endless rubber belt is driven by the motor to run continuously, and the filter cloth is laid on the belt to run synchronously with it, and the belt is in contact with the annular friction belt on the vacuum slide table to form a water seal. The slurry is evenly distributed on the filter cloth by the dis...

Claims

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Application Information

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IPC IPC(8): B01D33/04B01D33/60
CPCB01D33/04B01D33/60
Inventor 卢克超江健吴基荣杨玉海曹振涛任聪蒋波刘钊卢波陈凯朱亮时强
Owner CHINA PETROLEUM & CHEM CORP
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