A high-temperature condensate degreasing process

A high-temperature condensate water and process technology, applied in water/sewage treatment, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problem of poor water impact resistance of filter membranes, small water production, and secondary pollution and other problems, to achieve the effect of low water pretreatment requirements, long membrane service life and easy cleaning

Active Publication Date: 2019-02-01
ZHEJIANG CATHAYRIPE ENVIRONMENTAL ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The water yield of this method is small; the filter membrane has poor resistance to water impact, which may easily cause the leakage of the adsorbed substances and cause secondary pollution.

Method used

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  • A high-temperature condensate degreasing process
  • A high-temperature condensate degreasing process
  • A high-temperature condensate degreasing process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0099] The inorganic carbon membrane includes a support layer and a separation layer;

[0100] The thickness of the separation layer is 0.05 microns;

[0101] The filter pore size of the separation layer is 20nm;

[0102] The composition of the support layer in parts by weight is:

[0103] Aggregate: 40 parts of coal powder, 10 parts of phenolic resin, 20 parts of white carbon black, 5 parts of bentonite, 8 parts of burnt kaolin;

[0104] Pore ​​forming agent: 0.5 part of purple wood knot, 0.3 part of serpentine powder;

[0105] Additives: 1 part of copper nitrate, 2 parts of silicon dioxide modified by dimethyl disilane;

[0106] Dispersant: 0.8 parts of lecithin.

[0107] The preparation steps of separation layer are:

[0108] Ingredients: Prepare 15 parts of white carbon black, 25 parts of coal powder, and 0.5 parts of purple wood knot according to the weight ratio;

[0109] Coating solution solvent preparation: weigh and mix glycerol, ethylene glycol and 1,4-butanedi...

Embodiment 2

[0114] The inorganic carbon membrane includes a support layer and a separation layer;

[0115] The thickness of the separation layer is 1 micron;

[0116] The filter pore size of the separation layer is 10 microns;

[0117] The composition of the support layer in parts by weight is:

[0118] Aggregate: 50 parts of coal powder, 15 parts of phenolic resin, 30 parts of white carbon black, 9 parts of bentonite, 4 parts of burnt kaolin;

[0119] Pore ​​forming agent: 1 part of purple wood knot, 0.8 part of serpentine powder;

[0120] Additives: 2 parts of copper nitrate, 4 parts of fatty acid modified calcium carbonate;

[0121] Dispersant: 1.2 parts of lecithin.

[0122] The preparation steps of separation layer are:

[0123] Ingredients: Prepare 20 parts of white carbon black, 30 parts of coal powder, and 1 part of purple wood knot according to the weight ratio;

[0124] Coating solution solvent preparation: weigh and mix glycerol, ethylene glycol and 1,4-butanediol in a vo...

Embodiment 3

[0129] The inorganic carbon membrane includes a support layer and a separation layer;

[0130] The thickness of the separation layer is 0.05 microns;

[0131] The ratio of the thickness of the separation layer to the thickness of the support layer is 1: 100; the filter aperture of the separation layer is 20nm;

[0132] The separation layer is formed by multiple coatings, thereby obtaining a pore diameter gradient in which the pore diameters of the support layer, the inner layer of the separation layer and the outer layer of the separation layer gradually become smaller;

[0133] A water production channel is formed between the flat inorganic carbon membranes arranged side by side, and the ratio of the thickness of the flat inorganic carbon membrane to the height of the water production channel is 1:4.

[0134] The composition of the support layer in parts by weight is:

[0135] Aggregate: 45 parts of coal powder, 13 parts of phenolic resin, 22 parts of white carbon black, 6 ...

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Abstract

The invention provides a high-temperature condensed water degreasing process, which comprises carrier type membrane module filtering degreasing and active carbon filter degreasing. The high-temperature condensate degreasing process includes the carrier-type membrane module filtration stage and the activated carbon filter degreasing stage. The specific process is as follows: (1) The high-temperature condensate is injected into the carrier-type membrane module through the circulating pump from the raw water tank; (2) the carrier-type membrane module The filtration stage is carried out in a cross-flow filtration mode, the membrane surface flow velocity is 0.1-5m / s, the transmembrane pressure difference is 0.01-0.3MPa, the filtration accuracy of the membrane module is 0.001-100 microns, and the circulation ratio is 80%-99%; (3 ) The degreasing stage of the activated carbon filter is carried out by dead-end filtration, and the filtration rate is 3‑5m / s. Compared with the existing high-temperature condensate water degreasing process, the present invention has the advantages of low cost, high degreasing efficiency, produced water meeting boiler feed water requirements, and constant water quality.

Description

technical field [0001] The invention relates to a high-temperature condensed water degreasing process, which belongs to the field of water purification. Background technique [0002] Chemical plants and thermal power plants mostly use hot steam as thermal power. After power consumption and heat exchange, hot steam turns into condensed water, and its heat accounts for 20%-30% of the total energy of steam. This is a part of excellent desalinated water resources, but it often contains a small amount of oil, generally between 1 and 150㎎ / L, which is much higher than the oil quality standard of boiler feed water, so it cannot be directly used as boiler feed water. Different devices and operating time lead to different types and quantities of oil in condensed water. Different recovery methods lead to different states of oil in condensed water. In addition, the temperature of condensed water is high, making it extremely difficult to treat high-temperature condensed water. According...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/02
CPCC02F1/283C02F1/444C02F9/00
Inventor 周江梁红波李光辉
Owner ZHEJIANG CATHAYRIPE ENVIRONMENTAL ENG
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