CN105217924A - A kind of low temperature pyrolyzer domestic sludge dewatering agent and using method thereof - Google Patents
A kind of low temperature pyrolyzer domestic sludge dewatering agent and using method thereof Download PDFInfo
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- CN105217924A CN105217924A CN201410480007.8A CN201410480007A CN105217924A CN 105217924 A CN105217924 A CN 105217924A CN 201410480007 A CN201410480007 A CN 201410480007A CN 105217924 A CN105217924 A CN 105217924A
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- dewatering agent
- low temperature
- domestic sludge
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- sludge dewatering
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Abstract
The present invention relates to a kind of low temperature pyrolyzer domestic sludge dewatering agent, its by weight percent be 30 ~ 70% cationic polymers and weight percent be 30 ~ 70% non-ionic polyacrylamide be composited; The using method of this dewatering agent, step is as follows: (1) is first by described dewatering agent deionized water dissolving; (2) with volume pump, solution in step (1) is added in cracking mud; (3) by mixture in step (2) through centrifuge dewatering, obtain the mud cake of low water content; (4) gained mud cake oven dry in step (4) is namely obtained more low water content particle.The present invention is good to domestic sludge dehydrating effect, the water ratio of mud cake can be made to be stabilized in less than 50%, and the particle of mud cake is little, seldom there is caking, enter postorder to dry, be easy to obtain the tiny saccharoid of particle, and water ratio is reduced to less than 30% further, may be used for burn or as Fertilizer application.
Description
Technical field
The present invention relates to a kind of dewatering agent, specifically disclose a kind of low temperature pyrolyzer domestic sludge dewatering agent and using method thereof.
Background technology
Existing domestic sludge treatment process is generally landfill, also have on a small quantity for burning or compost, also has a kind of new technology, be exactly by domestic sludge at 200-300 DEG C of temperature, pressure treatment, dewater with sludge dehydrating agent after cooling, the moisture content of the cake obtained is lower, in order to postorder can on streamline auto-drying, very high requirement is had to the mud cake obtained that dewaters, namely water ratio will lower than 50%, mud cake particle is little, block can not be had, the mud cake that such dehydration obtains could enter next step flow process of drying at once, obtain after drying water ratio lower than 30% particulate matter, this particle can be used for burn or as Fertilizer application, considerably increase economic benefit.Existing sludge dehydrating agent, as often can not get tiny particle after cationic polyacrylamide use, has many blocks, and moisture content of the cake fluctuation is large, can not ensure that water ratio is lower than 50%.
Summary of the invention
The object of the invention is to: provide a kind of dehydrating effect good for overcoming the above problems, after can making domestic sludge process, moisture content of the cake is lower than 50%, mud cake dry further rear water ratio lower than 30% low temperature pyrolyzer domestic sludge dewatering agent and using method.
The technical solution adopted in the present invention is such:
A kind of low temperature pyrolyzer domestic sludge dewatering agent, it is composited by cationic polymers and non-ionic polyacrylamide.
Further, the weight percent of described cationic polymers is 30 ~ 70%, and the weight percent of described non-ionic polyacrylamide is 30 ~ 70%.
Further, described cationic polymers can be one or more in cationic polyacrylamide, Poly Dimethyl Diallyl Ammonium Chloride, polyacrylamide oxy-ethyl-trimethyl salmiac.
Further, the molecular weight of described non-ionic polyacrylamide is 800 ~ 1,500 ten thousand.
Further, the molecular weight of described non-ionic polyacrylamide is 1200 ~ 1,500 ten thousand.
A using method for low temperature pyrolyzer domestic sludge dewatering agent as claimed in claim 1, step is as follows:
(1) first by described dewatering agent deionized water dissolving, its weight percent is 0.05% ~ 0.2%;
(2) be added in cracking mud with volume pump by solution in step (1), dosing weight percent is 50 to 500/1000000ths of cracking mud;
(3) by mixture in step (2) through centrifuge dewatering, obtain the mud cake of low water content;
(4) gained mud cake oven dry in step (4) is namely obtained more low water content particle.
Further, in described step (1), dewatering agent weight percent is 0.1% ~ 0.15%.
Further, in described step (2), dosing weight percent is 100/1000000ths ~ 200.
In sum, owing to adopting technique scheme, the invention has the beneficial effects as follows:
Present invention uses containing low-molecular-weight cationic polymkeric substance, on molecular chain, charge content is high, negative charge during energy is abundant and in low temperature pyrolyzer mud, add that the absorption volume of non-ionic polyacrylamide sweeps effect, very good to domestic sludge dehydrating effect, the water ratio of mud cake can be made to be stabilized in less than 50%, and the particle of mud cake is little, seldom there is caking, enter postorder to dry, be easy to obtain the tiny saccharoid of particle, and water ratio is reduced to less than 30% further, may be used for burn or as Fertilizer application.
Embodiment
Embodiment 1
A kind of low temperature pyrolyzer domestic sludge dewatering agent, comprises two kinds of compositions below:
Poly Dimethyl Diallyl Ammonium Chloride (molecular weight 1,000,000) 40%
Non-ionic polyacrylamide (molecular weight 1,200 ten thousand) 60%
By above-mentioned compound product deionized water dissolving, its weight percent is 0.1%, be added in cracking mud with volume pump, dosing weight percent is 200/1000000ths of cracking mud, mixture is through centrifuge dewatering, gained moisture content of the cake is 45%, and mud cake is without caking, and postorder dries the particle obtaining water ratio 27%.
Embodiment 2
A kind of low temperature pyrolyzer domestic sludge dewatering agent, comprises two kinds of compositions below:
Cationic polyacrylamide (molecular weight 8,000,000, ion degree 50%) 30%
Non-ionic polyacrylamide (molecular weight 1,200 ten thousand) 70%
By above-mentioned compound product deionized water dissolving, its weight percent is 0.1%, be added in cracking mud with volume pump, dosing weight percent is 100/1000000ths of cracking mud, mixture is through centrifuge dewatering, gained moisture content of the cake is 46%, and mud cake is without caking, and postorder dries the particle obtaining water ratio 28%.
Embodiment 3
A kind of low temperature pyrolyzer domestic sludge dewatering agent, comprises two kinds of compositions below:
Cationic polyacrylamide (molecular weight 8,000,000, ion degree 50%) 30%
Poly Dimethyl Diallyl Ammonium Chloride (molecular weight 1,000,000) 40%
Non-ionic polyacrylamide (molecular weight 1,200 ten thousand) 30%
By above-mentioned compound product deionized water dissolving, its weight percent is 0.2%, be added in cracking mud with volume pump, dosing weight percent is 300/1000000ths of cracking mud, mixture is through centrifuge dewatering, gained moisture content of the cake is 43%, and mud cake is without caking, and postorder dries the particle obtaining water ratio 26%.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a low temperature pyrolyzer domestic sludge dewatering agent, is characterized in that: it is composited by cationic polymers and non-ionic polyacrylamide.
2. a kind of low temperature pyrolyzer domestic sludge dewatering agent according to claim 1, it is characterized in that: the weight percent of described cationic polymers is 30 ~ 70%, the weight percent of described non-ionic polyacrylamide is 30 ~ 70%.
3. a kind of low temperature pyrolyzer domestic sludge dewatering agent according to claim 1, is characterized in that: described cationic polymers can be one or more in cationic polyacrylamide, Poly Dimethyl Diallyl Ammonium Chloride, polyacrylamide oxy-ethyl-trimethyl salmiac.
4. a kind of low temperature pyrolyzer domestic sludge dewatering agent according to claim 1, is characterized in that: the molecular weight of described non-ionic polyacrylamide is 800 ~ 1,500 ten thousand.
5. a kind of low temperature pyrolyzer domestic sludge dewatering agent according to claim 1, is characterized in that: the molecular weight of described non-ionic polyacrylamide is 1200 ~ 1,500 ten thousand.
6. a using method for low temperature pyrolyzer domestic sludge dewatering agent as claimed in claim 1, is characterized in that: step is as follows:
(1) first by described dewatering agent deionized water dissolving, its weight percent is 0.05% ~ 0.2%;
(2) be added in cracking mud with volume pump by solution in step (1), dosing weight percent is 50 to 500/1000000ths of cracking mud;
(3) by mixture in step (2) through centrifuge dewatering, obtain the mud cake of low water content;
(4) gained mud cake oven dry in step (4) is namely obtained more low water content particle.
7. the using method of a kind of low temperature pyrolyzer domestic sludge dewatering agent according to claim 5, is characterized in that: dewatering agent weight percent is for being 0.1% ~ 0.15% in described step (1).
8. the using method of a kind of low temperature pyrolyzer domestic sludge dewatering agent according to claim 5, is characterized in that: in described step (2), dosing weight percent is 100/1000000ths ~ 200.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410480007.8A CN105217924A (en) | 2014-09-18 | 2014-09-18 | A kind of low temperature pyrolyzer domestic sludge dewatering agent and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410480007.8A CN105217924A (en) | 2014-09-18 | 2014-09-18 | A kind of low temperature pyrolyzer domestic sludge dewatering agent and using method thereof |
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| CN105217924A true CN105217924A (en) | 2016-01-06 |
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| CN201410480007.8A Pending CN105217924A (en) | 2014-09-18 | 2014-09-18 | A kind of low temperature pyrolyzer domestic sludge dewatering agent and using method thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0924400A (en) * | 1995-07-13 | 1997-01-28 | Kurita Water Ind Ltd | Method for dehydrating digested sludge |
| CN1384806A (en) * | 1999-10-06 | 2002-12-11 | 卡米拉卡米股份公司 | Cationic polymers for sludge dewatering |
| JP2004121997A (en) * | 2002-10-02 | 2004-04-22 | Kurita Water Ind Ltd | Sludge dehydrating agent and sludge dehydrating method |
| JP2006188694A (en) * | 2005-12-27 | 2006-07-20 | Toagosei Co Ltd | Composition |
| CN101643308A (en) * | 2009-09-24 | 2010-02-10 | 天津大学 | Solid-liquid dehydration method of waste brine mud |
| JP5283253B2 (en) * | 2007-01-17 | 2013-09-04 | ハイモ株式会社 | Method for dewatering paper sludge |
-
2014
- 2014-09-18 CN CN201410480007.8A patent/CN105217924A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0924400A (en) * | 1995-07-13 | 1997-01-28 | Kurita Water Ind Ltd | Method for dehydrating digested sludge |
| CN1384806A (en) * | 1999-10-06 | 2002-12-11 | 卡米拉卡米股份公司 | Cationic polymers for sludge dewatering |
| JP2004121997A (en) * | 2002-10-02 | 2004-04-22 | Kurita Water Ind Ltd | Sludge dehydrating agent and sludge dehydrating method |
| JP2006188694A (en) * | 2005-12-27 | 2006-07-20 | Toagosei Co Ltd | Composition |
| JP5283253B2 (en) * | 2007-01-17 | 2013-09-04 | ハイモ株式会社 | Method for dewatering paper sludge |
| CN101643308A (en) * | 2009-09-24 | 2010-02-10 | 天津大学 | Solid-liquid dehydration method of waste brine mud |
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Application publication date: 20160106 |