Method for preparing wind-prevention and sand-fixation water retaining agent by use of pulping and papermaking waste liquid

A technology for pulping waste liquid, windbreak and sand fixation, applied in chemical instruments and methods, applications, organic fertilizers, etc., can solve the problems of large treatment investment, high cost, difficult biodegradation, etc., to improve economic benefits, low production costs, The effect of improving the environment

Inactive Publication Date: 2013-03-06
张保良 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Now there are about dozens of chemical sand control materials commonly used, such as synthetic resins, organic latex, high molecular polymers, emulsified asphalt, etc. Although these products have good sand-fixing effects, they are costly and difficult to biodegrade, and it is even more difficult to plant sand-fixing materials with plants The combination of measures cannot be promoted on a large scale
[0004] During papermaking and pulping, 50% of the lignin components in the raw materials are dissolved in the pulping waste liquid, and the pulping waste liquid is discharged directly without treatment, causing serious pollution. Although the state has stepped up efforts to control, the investment in treatment is large, which makes the enterprise unbearable Heavy load, while the lignin in pulping waste liquor contains rich organic nutrients needed for plant growth

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] First take 800kg of papermaking pulping waste liquid, evaporate and concentrate to a solid content of 30%, then add 40kg of polyvinyl alcohol, 60kg of urea, and 100kg of formaldehyde, heat up to 120°C for 4 hours, then add 2kg of borax and 12kg of starch for 1 hour, that is, The liquid product of the windproof sand-fixing and water-retaining agent was obtained, and the powder product was obtained by spray drying at 320°C.

Embodiment 2

[0021] First, take 100kg of papermaking pulping waste liquid, evaporate and concentrate to a solid content of 30%, then add 15kg of instant gelatin powder, 50kg of urea, and 100kg of formaldehyde, heat up to 125°C and keep it for 4 hours, then add 2kg of borax and 12kg of starch for 1 hour to get the product. The liquid product of windproof, sand-fixing and water-retaining agent is spray-dried at 320°C to obtain a powder product.

Embodiment 3

[0023] First take 800kg of papermaking pulping waste liquid, evaporate and concentrate to a solid content of 30%, then add 40kg of polyvinyl alcohol, 50kg of urea, and 120kg of acetaldehyde, heat up to 125°C for 4 hours, then add 2kg of borax and 12kg of starch for 1 hour, that is, The liquid product of the windproof sand-fixing and water-retaining agent was obtained, and the powder product was obtained by spray drying at 320°C.

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PUM

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Abstract

The invention relates to a method for preparing a wind-prevention and sand-fixation water retaining agent by use of pulping and papermaking waste liquid, which comprises the following steps of: evaporating the pulping and papermaking waste liquid until the solid content is 20-40%; adding a condensing agent, urea and gelatine powder into the waste liquid, heating to 110-140 DEG C, and reacting for 3-5 hours; adding a crosslinking agent and reacting for 2-4 hours; adding starch and reacting for 0.5-2 hours to obtain a liquid product; and performing spray drying at 250-400 DEG C to obtain a solid product. Through the invention, the prepared wind-prevention and sand-fixation water retaining agent has a water absorption and water retaining function; and after sprayed onto the sand surface, the water retaining agent can form a consolidated layer to realize certain sand fixation effect.

Description

technical field [0001] The invention belongs to the field of chemical industry, and in particular relates to the technology of preparing windproof, sand-fixing and water-retaining agent through comprehensive utilization of papermaking pulping waste liquid. Background technique [0002] my country is one of the countries most seriously affected by desertification in the world. The area of ​​deserts and desertified land is increasing, and the direct economic losses caused by deserts are increasing every year, directly affecting the living environment of human beings. The number of sandstorms is increasing year by year. It directly threatens Beijing, the capital of the political and cultural center of the motherland. At present, the desertification of the Northwest China and Inner Mongolia grasslands is becoming more and more serious. Windbreak, sand fixation, water conservation, soil improvement, environmental protection, and ecological protection have become the urgent needs of...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): C09K17/32C09K17/28C08G12/40C08H7/00C09K105/00
Inventor张保良张婷张荣红
Owner张保良