CN1254694A - Ammonium-magnesium compounded pulping process for preparing compound organic fertilizer directly from black liquid - Google Patents
Ammonium-magnesium compounded pulping process for preparing compound organic fertilizer directly from black liquid Download PDFInfo
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- CN1254694A CN1254694A CN 99101692 CN99101692A CN1254694A CN 1254694 A CN1254694 A CN 1254694A CN 99101692 CN99101692 CN 99101692 CN 99101692 A CN99101692 A CN 99101692A CN 1254694 A CN1254694 A CN 1254694A
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- pulping process
- ammonium
- magnesium
- organic fertilizer
- compounded
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Abstract
An ammonium-magnesium compound pulping process for directly using the black pulp liquid as compound organic fertilizer features that its degradating agent is the sulfites of ammonium, magnesium, potassium and calcium for compound degradation and a disperser is used. Said black liquid is concentrated to obtain compound organic fertilizer. Its advantages are reasonable process, simple operation, reducing environmental pollution from black liquid and comprehensive use of resources.
Description
The present invention is a kind of paper-making pulping production technique.
Traditional chemical pulping has alkaline process, sulphate process, sulphite process, problems such as the black liquor that these methods all exist generation is many, pollution load weight, treatment cost height, simultaneously owing to contained composition complexity in the black liquor, can not fully utilize effectively, thereby be unfavorable for the development of industry resource utilization.The patented technology (CN96115831) of utilizing papermaking black liquor wastewater to make organic composite fertilizer was arranged in 96 years, and it is that black liquor waste necessary liquid of granulation when producing agricultural granular compound fertilizer is added in the chemical fertilizer.As seen, this technology is just carried out processing treatment to the black liquor that slurrying produced, and its method operational path is long, need found the factory separately on the basis, paper mill and make organic fertilizer.
The objective of the invention is to be improved on the prescription of papermaking digesting liquid, promptly by changing the slurrying prescription, can produce qualified paper pulp, black liquor can directly obtain compoiste fertilizer again through concentrating.
Operational path of the present invention is:
(1). raw material: straw
Degradation agents: (NH
4)
2SO
3: MgSO
3: K
2SO
3=48～60%: 28～37%: 12～16% (weight percent), CaSO
3In right amount
Buffer reagent: nonionogenic tenside
(2). proportioning:
Straw: degradation agents: buffer reagent=80.0～85.0%: 12.0～13.0%: 4.5～5.0% (weight percents)
Dispersion agent: 0.15～0.20% of amount of water
(3). reaction conditions: regulator solution ratio: 1: 2～2.5; Heating-up time: 1～1.5 hour; Rotary spherical digester pressure: 8 * 10
5Pa; Boiling temperature: 160～170 ℃; Soaking time: 3～3.5 hours; Boiling is the phase pH value not: 6.8～7.5.
(4). when boiling is warming up to 105～110 ℃, carry out the little venting of boiling, continue then to heat up, when cooking pressure reaches 8 * 10
5Behind the Pa, be incubated 2～3 hours.The complete band of boiling is pressed and is spurted tower, and then through the pulp-extruding machine extruding, straw pulp send the back operation to carry out rinsing and manufacture paper with pulp into paper, and the black liquor of extruding forms the compoiste fertilizer of semicure through evaporation concentration.
Be easy to rinsing according to the prepared slurry of this composite pulping technology, become paper good toughness, intensity big, pulping yield height (generally 58～59%).Can utilize simultaneously the approach of adjusting the degradation agents prescription, make the black liquor of extruding be condensed into the compoiste fertilizer of different proportionings such as containing N, K, Mg, Ca.Present method operational path is reasonable, and is easy and simple to handle, and running expense is low, both can eliminate black liquor of pulp making and pollute, and makes plant resources obtain comprehensive utilization again, helps the big production of industry resource utilization.
Embodiment:
25m packs wheat straw 3.5t into earlier after getting the raw materials ready
3Rotary spherical digester is again with (NH
4)
2SO
3260Kg, MgSO
3185Kg, K
2SO
380Kg, CaSO
310Kg and carbon ammonium 200Kg, dispersion agent 10Kg and water 7t pack into, rotate rotary spherical digester 20 minutes, make cooking liquor soak into wheat straw.During logical then steam to 105～110 ℃, carry out the little venting of boiling, continue to heat up about 1 hour, when cooking pressure reaches 8 * 10
5During Pa, be incubated 3 hours.The complete band of boiling is pressed and is spurted tower, and after the pulp-extruding machine extruding, straw pulp send the back operation to carry out rinsing and manufacture paper with pulp into white writing paper.The black liquor of extruding makes the compoiste fertilizer of semicure through evaporation concentration.Prepared white writing paper meets the GB12654-90g grade standard after testing, and black liquor does not contain after testing to the deleterious composition of farm crop.
Claims (3)
1. ammonium-magnesium compounded pulping process of directly making compoiste fertilizer of black liquor, it is characterized in that straw, degradation agents and buffer reagent in 80.0～85.0%: the ratio of 12.0～13.0%: 4.5～5.0% (weight percents) is prepared burden, add the rotary spherical digester of packing into behind entry and the dispersion agent simultaneously, carry out boiling, extruding by common paper technology condition, slurry is manufactured paper with pulp into paper after rinsing, the black liquor of extruding makes the compoiste fertilizer of semicure through evaporation concentration.
2. pulping process as claimed in claim 1, it is characterized in that: degradation agents is (NH
4)
2SO
3: MgSO
3: K
2SO
3=48～60%: 28～37%: 12～16% (weight percent), CaSO
3In right amount
3. pulping process as claimed in claim 1, it is characterized in that: dispersion agent is a nonionogenic tenside, its consumption is 0.15～0.20% of an amount of water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99101692 CN1254694A (en) | 1999-03-16 | 1999-03-16 | Ammonium-magnesium compounded pulping process for preparing compound organic fertilizer directly from black liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99101692 CN1254694A (en) | 1999-03-16 | 1999-03-16 | Ammonium-magnesium compounded pulping process for preparing compound organic fertilizer directly from black liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1254694A true CN1254694A (en) | 2000-05-31 |
Family
ID=5270615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99101692 Pending CN1254694A (en) | 1999-03-16 | 1999-03-16 | Ammonium-magnesium compounded pulping process for preparing compound organic fertilizer directly from black liquid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1254694A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109721434A (en) * | 2019-03-15 | 2019-05-07 | 青岛汇君环境能源工程有限公司 | A kind of preparation process of the Liquid Fertilizer of biogas slurry compounding |
-
1999
- 1999-03-16 CN CN 99101692 patent/CN1254694A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109721434A (en) * | 2019-03-15 | 2019-05-07 | 青岛汇君环境能源工程有限公司 | A kind of preparation process of the Liquid Fertilizer of biogas slurry compounding |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |