CN105367265A - Improvement of process method for extracting and producing organic fertilizer from black liquor left after production of natural-color household paper from crop straws - Google Patents
Improvement of process method for extracting and producing organic fertilizer from black liquor left after production of natural-color household paper from crop straws Download PDFInfo
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- CN105367265A CN105367265A CN201510866050.2A CN201510866050A CN105367265A CN 105367265 A CN105367265 A CN 105367265A CN 201510866050 A CN201510866050 A CN 201510866050A CN 105367265 A CN105367265 A CN 105367265A
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Abstract
The invention relates to improvement of a process method for extracting and producing organic fertilizer from black liquor left after production of natural-color household paper from crop straws and belongs to the field of fertilizers. A material returning device in an original granulating drier is removed to prevent granules from repeated spraying and high-temperature carbonizing, which may lead to reduction of the organic matter content. Screened fine granules are no longer returned to the granulating drier and are directly packaged and used as ''water flush fertilizer''. The method comprises the steps of concentrating black liquor of a paper plant; feeding the metered black liquor into a mixed tank; mixing the black liquor with potassium fertilizer or nitrogen fertilizer and phosphate fertilizer, and feeding the mixture into a mixed liquid storage tank; then feeding the mixture into a slurry pump; spraying the concentrated black liquor through the slurry pump onto a powdery material containing nitrogen, phosphorus and potassium components and zeolite powder (bentonite) in a granulator for granulation; feeding the obtained granules through a hot blast stove and an air blowing system to a drying step; and then cooling, screening and packaging the granules. With such a process method for producing the organic compound fertilizer, wastes are turned into wealth; the production cost is lowered; the content of organic matters of the fertilizer is improved; and furthermore, the pollution is prevented and the ecological environment is protected.
Description
Technical field
The invention belongs to technical field of fertilizers, particularly relate to a kind of crop straws for producing true qualities paper for daily use and extract the improvement that fertilizer method produced by black liquor.
Background technology
Current paper mill black liquid extraction produces fertilizer; mainly through Black Liquor Concentration, then add zeolite powder or the mixing of spray profit soil, pressurize with shurry pump; by being sprayed in granulating and drying machine; the high-temperature furnace gas generation heat exchange of organic drop and 600-750 DEG C and dried, because particle after a granulation is less, must pass through material-returning device; turn back to tablets press leading portion; repeatedly circulation spraying is grown up, and qualified rear screening metering packing, granulation in tablets press got back to again by tiny powder.Under this processing condition, granulation is multiple high temp granulation, and some organic matter is carbonized, thus, reduce the organic content in fertilizer.
Summary of the invention
The object of this invention is to provide the processing method that a kind of black liquid extracts the new improvement of fertilizer.Technical scheme of the present invention is: removed by the internal return device in former granulating and drying machine, prevent particle from repeatedly carrying out spraying and avoid high temperature carbonization, cause organic content to reduce, the fine particle after screening no longer returns granulating and drying machine, directly packs work " punching fertilising " and uses.Operation is: paper mill black liquor is carried out condensing process; enter tempering tank after metering; mixed solution storage tank is entered after mixing with potash fertilizer or nitrogenous fertilizer, phosphate fertilizer; enter shurry pump again; the pulverulent material be sprayed onto by concentrated black liquor shurry pump containing N P and K component and zeolite powder (wilkinite) in tablets press carries out granulation, and the temperature of granulation controls at 45-60 DEG C.Owing to adding N P and K component and zeolite powder (wilkinite) during granulation, the moisture of granulation material significantly reduces, by hotblast stove and supply air system compared with the production process of granulating and drying one, enter drying process, drying temperature is 200-300 degree, then cools, sieves, packaging.
The unusual effect that the present invention has is:
1, due to the internal return device in former granulating and drying machine is removed, simplify granulating and drying equipment, reduce granulating and drying temperature, avoid the organic high temperature carbonization in a part of fertilizer, improve organic content.
2, this processing method produces fertilizer Chemical Mixed Fertilizer, not only turns waste into wealth, and reduce production cost, being also conducive to preventing pollution, preserving the ecological environment, is the particular embodiment realizing recycling economy.
Accompanying drawing explanation
Fig. 1 is process flow sheet of the present invention.
Embodiment
The specific embodiment of the present invention is illustrated by reference to the accompanying drawings:
Removed by internal return device in former granulating and drying machine, prevent particle from repeatedly carrying out spraying and avoid high temperature carbonization, organic content reduces, and the fine particle after screening no longer returns granulating and drying machine, directly packs work " punching fertilising " and uses.Operation is: paper mill black liquor is carried out condensing process; enter tempering tank after metering; mixed solution storage tank is entered after mixing with potash fertilizer or nitrogenous fertilizer, phosphate fertilizer; enter shurry pump again; the pulverulent material be sprayed onto by concentrated black liquor shurry pump containing N P and K component and zeolite powder (wilkinite) in tablets press carries out granulation, and the temperature of granulation controls at 45-60 DEG C.Owing to adding N P and K component and zeolite powder (wilkinite) during granulation, the moisture of granulation material significantly reduces, by hotblast stove and supply air system compared with the production process of granulating and drying one, enter drying process, drying temperature is 200-300 degree, then cools, sieves, packaging.Concentrated black liquor shurry pump is sprayed onto containing N P and K component and zeolite powder component in tablets press, and wherein the addition of zeolite powder or wilkinite component is 15-20%, and the organic content of prepared fertilizer reaches 30-32%.
The present invention changes the production process of granulating and drying one, produces compound organic and inorganic fertilizer.The operation of granulating and drying one is divided into granulation and drying process, produces organic and inorganic fertilizer in this way and organic Yin Gaowen can be avoided to greatest extent to cause charing loss, improve organic utilization ratio better, meet farm crop demand.
This processing method produces fertilizer Chemical Mixed Fertilizer, not only turns waste into wealth, and reduce production cost, being also conducive to preventing pollution, preserving the ecological environment, is the particular embodiment realizing recycling economy.
Claims (4)
1. crop straws for producing true qualities paper for daily use extracts the improvement that fertilizer processing method produced by black liquor, it is characterized in that, internal return device in former granulating and drying machine is removed, prevent particle from repeatedly carrying out spraying and avoid high temperature carbonization, organic content is caused to reduce, fine particle after screening no longer returns granulating and drying machine, directly packaging does " punching fertilising " use, operation is: paper mill black liquor is carried out condensing process, enter tempering tank after metering, with potash fertilizer or nitrogenous fertilizer, mixed solution storage tank is entered after phosphate fertilizer mixing, enter shurry pump again, the pulverulent material be sprayed onto by concentrated black liquor shurry pump containing N P and K component and zeolite powder (wilkinite) in tablets press carries out granulation, by hotblast stove and supply air system, enter drying process, then cool, screening, packaging.
2. the improvement of production fertilizer processing method according to claim 1; it is characterized in that; the operation of granulating and drying one is divided into granulation and drying process; the pulverulent material be sprayed onto by concentrated black liquor shurry pump containing N P and K component and zeolite powder (or wilkinite) in tablets press carries out granulation; the temperature of granulation controls at 45-60 DEG C, and time dry, temperature controls at 200-300 DEG C.
3. the improvement of production fertilizer processing method according to claim 2, is characterized in that, concentrated black liquor shurry pump is sprayed onto containing N P and K component and zeolite powder component in tablets press, and wherein the addition of zeolite powder or wilkinite component is 15-20%.
4. the improvement of production fertilizer processing method according to claim 1, it is characterized in that, the organic content of prepared fertilizer reaches 30-32%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510866050.2A CN105367265A (en) | 2015-12-02 | 2015-12-02 | Improvement of process method for extracting and producing organic fertilizer from black liquor left after production of natural-color household paper from crop straws |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510866050.2A CN105367265A (en) | 2015-12-02 | 2015-12-02 | Improvement of process method for extracting and producing organic fertilizer from black liquor left after production of natural-color household paper from crop straws |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105367265A true CN105367265A (en) | 2016-03-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510866050.2A Pending CN105367265A (en) | 2015-12-02 | 2015-12-02 | Improvement of process method for extracting and producing organic fertilizer from black liquor left after production of natural-color household paper from crop straws |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107502362A (en) * | 2017-08-29 | 2017-12-22 | 湖南泰谷生物科技股份有限公司 | The method and its application of acidic soil conditioner are prepared with black liquid |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1202466A (en) * | 1998-04-17 | 1998-12-23 | 赵德志 | Complex treatment process for waste water of paper making ammonium salt process |
| CN1915911A (en) * | 2005-08-19 | 2007-02-21 | 北京中航宏源环境工程技术有限公司 | Method for producing organic fertilizer, organic complex fertilizer by using papermaking black liquor through alkaline process including process of sodium sulfite |
| CN101209932A (en) * | 2006-12-25 | 2008-07-02 | 山东泉林纸业有限责任公司 | Method for producing fulvic acids fertilizer by using alkaline process black liquor |
-
2015
- 2015-12-02 CN CN201510866050.2A patent/CN105367265A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1202466A (en) * | 1998-04-17 | 1998-12-23 | 赵德志 | Complex treatment process for waste water of paper making ammonium salt process |
| CN1915911A (en) * | 2005-08-19 | 2007-02-21 | 北京中航宏源环境工程技术有限公司 | Method for producing organic fertilizer, organic complex fertilizer by using papermaking black liquor through alkaline process including process of sodium sulfite |
| CN101209932A (en) * | 2006-12-25 | 2008-07-02 | 山东泉林纸业有限责任公司 | Method for producing fulvic acids fertilizer by using alkaline process black liquor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107502362A (en) * | 2017-08-29 | 2017-12-22 | 湖南泰谷生物科技股份有限公司 | The method and its application of acidic soil conditioner are prepared with black liquid |
| CN107502362B (en) * | 2017-08-29 | 2020-06-05 | 泰谷生态科技集团股份有限公司 | Method for preparing acid soil conditioner from papermaking black liquor and application thereof |
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Application publication date: 20160302 |