CN103102053B - Recycling method of papermaking sludge - Google Patents
Recycling method of papermaking sludge Download PDFInfo
- Publication number
- CN103102053B CN103102053B CN201310081427.4A CN201310081427A CN103102053B CN 103102053 B CN103102053 B CN 103102053B CN 201310081427 A CN201310081427 A CN 201310081427A CN 103102053 B CN103102053 B CN 103102053B
- Authority
- CN
- China
- Prior art keywords
- paper mill
- sludge
- mill sludge
- pressure filter
- paper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Treatment Of Sludge (AREA)
Abstract
The invention relates to a treatment method of papermaking sludge, and particularly relates to a recycling method of the papermaking sludge. The recycling method of the papermaking sludge comprises the following main treatment steps of: (1) depositing and concentrating; (2) dewatering; (3) scattering and mixing; and (4) combustion for utilization, wherein waste residues left after full combustion are used as the raw materials of cement or bricks. According to the recycling method, the dewatered papermaking sludge is mixed with coal and then conveyed to the circulating fluid bed boiler of a heat power station as fuel to be combusted, and thus inorganics contained in the papermaking sludge are utilized, and fuel coal is saved, so that certain economic benefit is brought about for an enterprise; and because a stabilizer and a flocculant are added to a hardening and tempering pond, combusted papermaking sludge waste residues have better structural characteristics and can be used for manufacturing the cement and the bricks; and therefore, the sufficient utilization of organics and inorganics which are contained in the papermaking sludge is realized, so that the reduction, stabilization and harmlessness of papermaking sludge treatment are substantially achieved.
Description
Technical field
The present invention relates to the treatment process of paper mill sludge, particularly a kind of Resourceful treatment method of paper-making sludge.
Background technology
The process of pulping and paper-making can produce paper mill sludge, in society, the heavy demand of paper has also just been produced to a large amount of paper mill sludges.
For the ordinary method of processing paper mill sludge, be the method for filling up and combustion method, rule is filled up in employing need to take an a large amount of soil and can be to filling up environment around, and adopt burning rule just that paper mill sludge is pollution-free, reduce the processing of paper mill sludge amount, and paper mill sludge is as the waste residue product of waste paper pulp-making and log slurrying, although its chemical composition is very complicated, but organism can account for 60%～90% in paper mill sludge, other inorganicss and metal species impurity account for 10%～30%, and adopt the above-mentioned method of filling up and combustion method all can not make full use of paper mill sludge.
Prior art is for paper mill sludge recycling, and Chinese patent application number is 200910192533.3 to disclose a kind of Resourceful treatment method of paper-making sludge, comprises the following steps:
(1) paper mill sludge is first carried out to mechanical dehydration, then break up granulation, form mud granule;
(2) utilize high-temp waste gas and high temperature furnace slag to carry out secondary drying to mud granule, then burn; High-temp waste gas and high temperature furnace slag recycle that mud granule burning produces, the low temperature waste gas that mud granule secondary drying produces is sent into reaction tank, and the low temperature slag that mud granule secondary drying produces is sent into separate tank;
(3) in separate tank, add water, the solvend in low temperature slag is dissolved, then carry out separation, the recovery solution of generation is delivered to reaction tank, and waste residue is discharged system;
(4) to thin up in reaction tank, low temperature waste gas with reclaim solution reaction, obtain product solution;
(5) product solution is delivered to and extracted pond extraction, the product obtaining is sent into post-processing stages, and the waste water of generation is sent reaction tank back to and recycled.
Above-mentioned available technology adopting spiral dehydration equipment directly carries out mechanical dehydration to paper mill sludge, then will after the paper mill sludge secondary drying after dehydration, just burn, this combustion processes due to just merely the paper mill sludge after drying as fuel, burn, because its impurity is more, the waste gas that causes combustion processes to produce is too much, can not react with oxygen preferably, make paper mill sludge efficiency of combustion generally lower, can not utilize fully the organism in paper mill sludge, further, paper mill sludge after burning becomes waste residue, also fully resource utilization paper mill sludge will directly just be abandoned, or can produce the problem that paper mill sludge takes up an area and pollutes.
Summary of the invention
The object of the invention is to the defect existing in above-mentioned prior art, the present invention proposes a kind ofly can make full use of the organism of paper mill sludge and a kind of Resourceful treatment method of paper-making sludge of inorganics.
Object of the present invention is achieved through the following technical solutions:
A kind of Resourceful treatment method of paper-making sludge is provided, has comprised the following steps:
Step (1): precipitation is concentrated: paper mill sludge waste water is put into the modified pond of mud, and add the stablizer of 5～10mg/L and the flocculation agent of 1.5～3mg/L in the modified pond of mud, concentrated 1～2 hour of precipitation is 85～90% paper mill sludge until paper mill sludge waste water is isolated water ratio; Wherein, described stablizer is white lime, and described flocculation agent is polymerize aluminum chloride;
Step (2): primary dewatering: paper mill sludge in step (1) is sent into pressure filter, the paper mill sludge that is 40%～55% by dehydration of papermaking sludge to water ratio by pressure filter;
Step (3): break up mixing: the paper mill sludge after step (2) dehydration is broken up and is uniformly mixed into mud powder with coal dust, and wherein, the ratio of weight and number of paper mill sludge and coal dust is 1:10～15;
Step (4): burning utilizes: the mud powder in step (3) is sent into circular fluid bed, be dried for the first time, continuous heating and three processes of fully burning;
First heating: the first bed material through high temperature of mud powder surrounds and reheats to approaching bed temperature, carries out first being dried and forms one-level mud powder;
Continuous heating: primary sludge powder is carried out to continuous heating, so that the paper mill sludge in primary sludge powder and coal dust decompose and produce a large amount of volatile matters;
Fully burning: start coke and fully burn in Volatile, clean-burning temperature remains on more than 800 ℃, fully the rear remaining waste residue of burning is for the raw material of cement or brick.
Wherein, in step (2), paper mill sludge is sent into pressure filter and is dewatered and specifically comprise the following steps:
Step (2.1): paper mill sludge is at full speed delivered to pressure filter by high-pressure pump;
Step (2.2): paper mill sludge under high-speed, the filter plate of Rapid Flow on described pressure filter, and be squeezed on the filter plate of pressure filter and form sludge cake piece.
Wherein, described step (2.2) also comprises step 2.3 afterwards: paper mill sludge forms after sludge cake piece in described pressure filter, from the delivery port output of described pressure filter, drop to the process that step (3) is continued on ground, wherein, at least 6m is high apart from ground for the delivery port of described pressure filter.
Wherein, in the process of the first heating of step (4), in circular fluid bed, add Wingdale.
Wherein, between described step (2) and described step (3), also include the step of second dehydration, be specially: the paper mill sludge that is 40%～55% by the water ratio in step (2) is sent into pressure filter again the paper mill sludge that the secondary press filtration by pressure filter is 45%～50% by dehydration of papermaking sludge to water ratio.
Beneficial effect of the present invention: the circular fluid bed of delivering to thermoelectric power station as fuel after the paper mill sludge after dehydration mixes with coal burns, utilized like this inorganics in paper mill sludge, saved fire coal, to enterprise, brought certain economic benefit, and owing to having added stablizer and flocculation agent in step (1), make that the paper mill sludge waste residue after burning is had to good structural performance, can be used for manufacturing cement and brick, so just realized making full use of paper mill sludge organism and inorganics, accomplished in fact the minimizing that paper mill sludge is processed, stabilization and innoxious.
Accompanying drawing explanation
The invention will be further described to utilize accompanying drawing, but embodiment in accompanying drawing does not form any limitation of the invention, for those of ordinary skill in the art, is not paying under the prerequisite of creative work, can also obtain according to the following drawings other accompanying drawing.
Fig. 1 is schematic flow sheet of the present invention.
Embodiment
The invention will be further described with the following Examples.
The embodiment of a kind of Resourceful treatment method of paper-making sludge of the present invention, as shown in the schematic flow sheet of Fig. 1, comprises the following steps:
Step (1): precipitation is concentrated: paper mill sludge waste water is put into the modified pond of mud, and add the stablizer of 5～10mg/L and the flocculation agent of 1.5～3mg/L in the modified pond of mud, concentrated 1～2 hour of precipitation is 85～90% paper mill sludge until paper mill sludge waste water is isolated water ratio; Wherein, described stablizer is white lime, and described flocculation agent is polymerize aluminum chloride; And isolated water recoverable; The flocculation agent that is incorporated as polymerize aluminum chloride in this step produces throwing out to paper mill sludge, make dehydration of papermaking sludge, and be the stable rising in the modified pond that makes of the interpolation of the stablizer of white lime, can be to paper mill sludge deodorization and sterilization, simultaneously, the rising of temperature can be accelerated the separated of paper mill sludge and water, improves the dehydrating effect of paper mill sludge.
Step (2): primary dewatering: paper mill sludge in step (1) is sent into pressure filter, the paper mill sludge that is 40%～55% by dehydration of papermaking sludge to water ratio by pressure filter; And paper mill sludge is sent into pressure filter and is dewatered and specifically comprise the following steps in step (2):
Step (2.1): paper mill sludge is at full speed delivered to pressure filter by high-pressure pump;
Step (2.2): paper mill sludge under high-speed, the filter plate of Rapid Flow on described pressure filter, and be squeezed on the filter plate of pressure filter and form sludge cake piece.。
Step (3): break up mixing: the paper mill sludge after step (2) dehydration is broken up and is uniformly mixed into mud powder with coal dust, and wherein, the ratio of weight and number of paper mill sludge and coal dust is 1:10～15.
Step (4): burning utilizes: the mud powder in step (3) is sent into circular fluid bed, be dried for the first time, continuous heating and three processes of fully burning;
First heating: the first bed material through high temperature of mud powder surrounds and reheats to approaching bed temperature, carries out first being dried and forms one-level mud powder;
Continuous heating: primary sludge powder is carried out to continuous heating, so that the paper mill sludge in primary sludge powder and coal dust decompose and produce a large amount of volatile matters;
Fully burning: start coke and fully burn in Volatile, clean-burning temperature remains on more than 800 ℃, fully the rear remaining waste residue of burning is for the raw material of cement or brick.
Concrete, described step (2.2) also comprises step 2.3 afterwards: paper mill sludge forms after sludge cake piece in described pressure filter, from the delivery port output of described pressure filter, drop to the process that step (3) is continued on ground, wherein, at least 6m is high apart from ground for the delivery port of described pressure filter, paper mill sludge becomes the sludge cake piece delivery port of laying equal stress on and drops to ground after completing steps (2), by breaing up dewatered sludge in the gravity performing step (3) of sludge cake piece self, and do not need to adopt the special equipment of breaing up or device, extremely convenient and efficient, effectively for enterprise has saved cost.
Concrete, in the process of the first heating of step (4), in circular fluid bed, add Wingdale.
The circular fluid bed that the even mixed mud powder of paper mill sludge after dehydration and coal dust is delivered to thermoelectric power station as fuel burns, utilized like this inorganics in paper mill sludge, saved fire coal, to enterprise, brought certain economic benefit, and owing to having added stablizer and flocculation agent in step (1), make and the paper mill sludge waste residue after burning is had to good structural performance, can manufacture the raw material of cement or brick, so just realized making full use of paper mill sludge organism and inorganics, accomplished in fact the minimizing that paper mill sludge is processed, stabilization and innoxious.
Paper mill sludge in scale circular fluid bed with coal mixed firing, its benefit: 1, after paper mill sludge mummification in circulating fluidized bed internal combustion, burn highly stable, operation is very simple; 2, Pollutant emission concentration is less than the prescribed value in national Air–pollution From Combustion control criterion; 3, paper mill sludge increases Wingdale in order to desulfurization in circular fluid bed, make sulfur dioxide removal efficiency high, can save smoke evacuation afterbody desulfurizer, adopt cloth bag division, be conducive to the processing to flying dust after paper mill sludge burning, guarantee minimizing, stabilization and innoxious that paper mill sludge is processed; 4, the mixed firing of paper mill sludge and coal dust can suppress the generation of Dioxins.
Affecting the factor that paper mill sludge produces Dioxins in combustion processes comprises: the composition of paper mill sludge and characteristic, the condition of burning, the composition of flue gas, the quantity of particle, the temperature of flue gas, the control method of particulate emission equipment and sour gas, and when temperature of combustion reaches more than 800 ℃, also can suppress the generation of Dioxins, further, reduce the generation of Dioxins.
In this concrete enforcement, between described step (2) and described step (3), also include the step of second dehydration, be specially: the paper mill sludge that is 40%～55% by the water ratio in step (2) is sent into pressure filter again, the paper mill sludge that secondary press filtration by pressure filter is 45%～50% by dehydration of papermaking sludge to water ratio, dehydration can improve the effect of breaing up of middle ground of step (3) sludge cake piece further, meanwhile, also can make mud powder in step (4) have good combustion efficacy.
Finally should be noted that; above embodiment is only in order to illustrate technical scheme of the present invention; but not limiting the scope of the invention; although the present invention has been done to explain with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify or be equal to replacement technical scheme of the present invention, and not depart from essence and the scope of technical solution of the present invention.
Claims (3)
1. a Resourceful treatment method of paper-making sludge, comprises the following steps:
Step (1): precipitation is concentrated: paper mill sludge waste water is put into the modified pond of mud, and add the stablizer of 5～10mg/L and the flocculation agent of 1.5～3mg/L in the modified pond of mud, concentrated 1～2 hour of precipitation is 85～90% paper mill sludge until paper mill sludge waste water is isolated water ratio; Wherein, described stablizer is white lime, and described flocculation agent is polymerize aluminum chloride;
Step (2): primary dewatering: paper mill sludge in step (1) is sent into pressure filter, the paper mill sludge that is 40%～55% by dehydration of papermaking sludge to water ratio by pressure filter;
Step (3): break up mixing: the paper mill sludge after step (2) dehydration is broken up and is uniformly mixed into mud powder with coal dust, and wherein, the ratio of weight and number of paper mill sludge and coal dust is 1:10～15;
Step (4): burning utilizes: the mud powder in step (3) is sent into circular fluid bed, be dried for the first time, continuous heating and three processes of fully burning;
First heating: the first bed material through high temperature of mud powder surrounds and reheats to approaching bed temperature, carries out first being dried and forms one-level mud powder;
Continuous heating: primary sludge powder is carried out to continuous heating, so that the paper mill sludge in primary sludge powder and coal dust decompose and produce a large amount of volatile matters;
Fully burning: start coke and fully burn in Volatile, clean-burning temperature remains on more than 800 ℃, fully the rear remaining waste residue of burning is for the raw material of cement or brick;
In step (2), paper mill sludge is sent into pressure filter and is dewatered and specifically comprise the following steps:
Step (2.1): paper mill sludge is at full speed delivered to pressure filter by high-pressure pump;
Step (2.2): paper mill sludge under high-speed, the filter plate of Rapid Flow on described pressure filter, and be squeezed on the filter plate of pressure filter and form sludge cake piece;
Described step (2.2) afterwards and described step (3) also comprise before step 2.3: paper mill sludge forms after sludge cake piece in described pressure filter, and from the delivery port output of described pressure filter, wherein, at least 6m is high apart from ground for the delivery port of described pressure filter;
The concrete finger paper mill sludge cake piece of breaing up in described step (3) drops to ground from the delivery port of described pressure filter, is realized and being broken up, and continue to be mixed into coal dust in step (3) process of mud powder by the gravity of paper mill sludge cake piece self.
2. a kind of Resourceful treatment method of paper-making sludge according to claim 1, is characterized in that: in the process of the first heating of step (4), add Wingdale in circular fluid bed.
3. a kind of Resourceful treatment method of paper-making sludge according to claim 1, it is characterized in that: the step that also includes second dehydration between described step (2) and described step (3), be specially: the paper mill sludge that is 40%～55% by the water ratio in step (2) is sent into pressure filter again the paper mill sludge that the secondary press filtration by pressure filter is 45%～50% by dehydration of papermaking sludge to water ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310081427.4A CN103102053B (en) | 2013-03-14 | 2013-03-14 | Recycling method of papermaking sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310081427.4A CN103102053B (en) | 2013-03-14 | 2013-03-14 | Recycling method of papermaking sludge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103102053A CN103102053A (en) | 2013-05-15 |
| CN103102053B true CN103102053B (en) | 2014-02-19 |
Family
ID=48310297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310081427.4A Active CN103102053B (en) | 2013-03-14 | 2013-03-14 | Recycling method of papermaking sludge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103102053B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104556621B (en) * | 2015-01-16 | 2018-08-17 | 光大环保技术研究院（深圳）有限公司 | A kind of method for sludge treatment |
| CN105716088B (en) * | 2016-04-19 | 2017-10-20 | 周伟初 | A kind of squeezing extrusion process method for soaking material |
| CN106045270A (en) * | 2016-05-22 | 2016-10-26 | 中国轻工业长沙工程有限公司 | Mixing and drying process for sludge and waste residue of wastepaper pulping and papermaking mill |
| CN106348567A (en) * | 2016-08-31 | 2017-01-25 | 河南永威安防股份有限公司 | Comprehensive treatment process for paper-making sludge and biomass waste |
| CN107473564B (en) * | 2017-09-26 | 2023-08-29 | 重庆盎瑞悦科技有限公司 | Harmless treatment method and system for domestic sludge |
| CN107601795A (en) * | 2017-10-29 | 2018-01-19 | 重庆盎瑞悦科技有限公司 | A kind of method and system using garden waste harmless treatment domestic sludge |
| CN110482825A (en) * | 2019-08-29 | 2019-11-22 | 万黛 | A kind of resource utilization method and paper mill production system of paper mill paper mill sludge |
| CN113402151A (en) * | 2021-05-26 | 2021-09-17 | 江苏安可捷环保科技有限公司 | Efficient treatment process for municipal domestic sludge |
| CN113651521A (en) * | 2021-07-21 | 2021-11-16 | 中交第二公路勘察设计研究院有限公司 | Artificial freeze-thaw sludge dewatering and coal blending incineration treatment method |
| CN114230122A (en) * | 2021-12-15 | 2022-03-25 | 山东尚科环境工程有限公司 | High-temperature and low-temperature drying comprehensive treatment method for papermaking sludge |
| CN114716127A (en) * | 2022-02-21 | 2022-07-08 | 江苏理文造纸有限公司 | Solid biological treatment equipment of using is carried to mud |
| CN114804538A (en) * | 2022-05-19 | 2022-07-29 | 山东合创新材料有限公司 | Sludge recycling process of primary sedimentation tank for manufacturing bobbin paper |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6054798A (en) * | 1983-09-06 | 1985-03-29 | Mitsui Mining Co Ltd | Dehydrating method of sludge |
| US6752849B2 (en) * | 2001-08-08 | 2004-06-22 | N-Viro International Corporation | Method for disinfecting and stabilizing organic wastes with mineral by-products |
| DE10160163C2 (en) * | 2001-12-07 | 2003-11-20 | Mac Mix Baustoffe Gmbh & Co Kg | Process for conditioning sludges and / or suspensions |
| CN101367597B (en) * | 2008-09-17 | 2011-09-21 | 广州绿由工业弃置废物回收处理有限公司 | Sludge dewatering method |
| CN101781073A (en) * | 2010-01-26 | 2010-07-21 | 东北大学 | Method of dewatering sludge and turning sludge into fuel |
| CN102139999B (en) * | 2011-02-09 | 2012-07-25 | 中粮麦芽（大连）有限公司 | Reducing and recycling treatment method for biological activated sludge |
-
2013
- 2013-03-14 CN CN201310081427.4A patent/CN103102053B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN103102053A (en) | 2013-05-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103102053B (en) | Recycling method of papermaking sludge | |
| CN105906176B (en) | A method of recycling, which is total to, using greasy filth and solid waste prepares light ceramic | |
| CN103130390B (en) | Oil-containing sludge treatment method and process flow | |
| CN101993181B (en) | Method for dehydration and recycling of continuous dyeing sludge | |
| CN101857353B (en) | Processing method for sludge with high water content | |
| CN111100719B (en) | Preparation method of water-washed fly ash derived fuel | |
| CN101886811A (en) | Method for coprocessing sludge with high moisture content by novel dry-process rotary kiln | |
| CN105000775A (en) | Deep dewatering system and method for sludge | |
| CN103819069A (en) | Deep sludge dewatering method and cement kiln comprehensive utilization method using same | |
| CN113226998A (en) | Sludge treatment method | |
| CN101914405B (en) | Sludge briquette fuel as well as production method and production system thereof | |
| CN103013613B (en) | Clean fuelization system and fuelization method for urban sludge | |
| CN102206030A (en) | Method for integrating sludge dewatering and sludge damp drying | |
| CN102140002A (en) | Closed machinery incineration treatment method for half-dry sludge | |
| CN100408918C (en) | Method for dealing with discharge liquid from paper, leather and dye printing industry using circulating fluidized combustion method | |
| CN104402271B (en) | A kind of mud is used for the ridge grain seeding method of dry-process rotary kiln | |
| CN102676267A (en) | Method for devulcanization by burning power plant fire coal mixed with dried sludge | |
| CN210313974U (en) | Sludge reduction treatment system | |
| CN116496071A (en) | Fly ash low-carbon ceramsite and preparation method and production system thereof | |
| CN102653403B (en) | Process method for preparing calcium carbide by recycling calcium carbide slag | |
| CN209934360U (en) | Dangerous waste incineration flue gas treatment system for recycling deacidified high-salt wastewater | |
| CN101712503B (en) | Processing method of printing and dyeing textile sewage | |
| CN103030257A (en) | Papermaking sludge incineration and harmless treatment method | |
| CN109529594A (en) | Carbonatation process sugaring waste filter mud mixes the method for being used for flue gas desulphurization with lime stone | |
| CN112403216B (en) | Method and device for desulfurizing flue gas by using magnesium slag reduction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |