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A kind of polyferric sulfate co-drying agent and its application

A technology of polymerizing ferric sulfate and desiccant, which is applied in the fields of ferric sulfate, flocculation/precipitation water/sewage treatment, etc. It can solve the problems of high equipment cost, non-use, high energy consumption, etc., to reduce molecular coagulation and prevent product The effect of agglomeration and simple operation process

Inactive Publication Date: 2016-05-11
HENAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the equipment cost of the spray drying method is high, the energy consumption is large, and the economic benefit is not ideal; the dehydration oxidation method also has many disadvantages, and the content of ferrous ions in the produced product is relatively high, which cannot reach the national standard, and the solid in the product is insoluble There are many materials, so this method is generally not used; in the application process, the vacuum drying method is mostly not used due to the large investment in equipment and the need for negative pressure in the production process, which makes the operation inconvenient.

Method used

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  • A kind of polyferric sulfate co-drying agent and its application
  • A kind of polyferric sulfate co-drying agent and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Add 30kg of sodium polyacrylate and 10kg of nonionic surfactant diethylene glycol monostearate into 60kg of methanol solution, stir, and mix uniformly to prepare a polymeric ferric sulfate co-drying agent.

[0015] The use process is:

[0016] Weigh 110kg of concentrated sulfuric acid with a mass concentration of 98% and put it into the acid-resistant reaction kettle, then weigh 1000kg of industrial ferrous sulfate and add it to the acid-resistant reaction kettle, stir it electrically until it is muddy, and add 200kg of hydrogen peroxide with a mass concentration of 50% while stirring , stirred and reacted for 2 hours, added 30kg of the polymeric ferric sulfate co-drying agent prepared above, mixed evenly, put it into a tray coated with simethicone oil, heated and dried directly in the drying room, then poured it out and crushed It is a light yellow powdery polyferric sulfate product that can be obtained by crushing with a machine. The bulk density of the product is 0.5...

Embodiment 2

[0022] Add 29 kg of potassium polyacrylate and 2 kg of nonionic surfactant sorbitan monooleate into 69 kg of ethanol solution, stir, and mix uniformly to prepare a polymeric ferric sulfate co-drying agent.

[0023] The use process is:

[0024] Weigh 120kg of concentrated sulfuric acid with a mass concentration of 98% and put it into an acid-resistant reaction kettle, then weigh 1000kg of industrial ferrous sulfate and add it to the acid-resistant reaction kettle, stir it electrically until it is muddy, and add 180kg of hydrogen peroxide with a mass concentration of 50% while stirring , stirred and reacted for 3 hours, added 25kg of the polymerized ferric sulfate co-drying agent prepared above, mixed evenly, put it into a tray coated with simethicone oil in advance, heated and dried directly in the drying room, and then poured it out and passed through the pulverizer The yellow powdery polyferric sulfate product that can be obtained by crushing has a bulk density of 0.61, and o...

Embodiment 3

[0026] Add 25kg of ammonium polyacrylate and 12kg of nonionic surfactant propylene glycol monolaurate into 63kg of acetone solution, stir, and mix well to prepare a polymeric ferric sulfate co-drying agent.

[0027] The use process is:

[0028] Weigh 100kg of concentrated sulfuric acid with a mass concentration of 98% and put it into an acid-resistant reaction kettle, then weigh 1000kg of industrial ferrous sulfate and add it to the acid-resistant reaction kettle, and stir electrically until it is muddy, and add 190kg of hydrogen peroxide with a mass concentration of 50% while stirring , stirred and reacted for 3 hours, added 35kg of the polymerized ferric sulfate co-drying agent prepared above, mixed evenly, put it into a tray coated with dimethyl silicone oil, heated and dried directly in the drying room, and then poured it out and passed through the pulverizer The yellow powdery polyferric sulfate product that can be obtained by crushing has a bulk density of 0.59, and othe...

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Abstract

The invention discloses a polymeric ferric sulfate co-desiccant and an application thereof. The technical scheme of the invention is that the polymeric ferric sulfate co-desiccant comprises the raw materials of, by weight, 10-40% of a positively charged polymer, 2-20% of a nonionic surfactant and 40-70% of a solvent. The positively charged polymer is one or more selected from sodium polyacrylate, potassium polyacrylate and ammonium polyacrylate. The nonionic surfactant is one or more selected from diethylene glycol monostearate, sorbitan monooleate and propylene glycol monolaurate. The solvenet is methanol, ethanol or acetone. The invention also discloses an application and a specific application method of the polymeric ferric sulfate co-desiccant in producing solid polymeric ferric sulfate. The production cost is low; energy consumption is low; time can be saved; operation process is simple; and equipment cost is low. The produced solid polymeric ferric sulfate meets the requirements of national standards (GB14591-2006 water treatment agent polymeric ferric sulfate).

Description

technical field [0001] The invention belongs to the technical field of solid polymeric ferric sulfate, and in particular relates to a polymeric ferric sulfate co-drying agent and application thereof. Background technique [0002] Chemical treatment is a very important unit in water supply and sewage treatment, in which flocculant is a chemical agent that can be used to effectively separate fine suspended particles that cause water pollution. The demand for flocculants in our country is large. With the strengthening of pollution control in the country, flocculants will have a huge potential market. At present, the main types of flocculants are still iron salts and aluminum salts. Organic polymer flocculants are expensive, and residual monomers or decomposition products may be toxic, while aluminum salt flocculants have aluminum toxicity and residual aluminum after precipitation and low temperature removal of turbidity. Shortcomings such as low ability. Polymerized ferric su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G49/14C02F1/52
Inventor 陈得军朱安莲李凌君裴渊超
Owner HENAN NORMAL UNIV