CN104250060A - Biochemical sludge processing method - Google Patents
Biochemical sludge processing method Download PDFInfo
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- CN104250060A CN104250060A CN201310269043.5A CN201310269043A CN104250060A CN 104250060 A CN104250060 A CN 104250060A CN 201310269043 A CN201310269043 A CN 201310269043A CN 104250060 A CN104250060 A CN 104250060A
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Abstract
The invention relates to a biochemical sludge processing method; biochemical sludge is mixed in the preparation of water coal slurry, and the water coal slurry is gasified at high temperature by use of a texaco coal gasification furnace, so that the biochemical sludge is completely gasified for n implementation of harmless biochemical sludge, in the gasification process, the water coal slurry is decomposed into process gas, and the end product is hydrogen. According to the biochemical sludge processing method, the biochemical sludge can be directly used for the preparation of the coal water slurry without drying, so that the cost of drying the biochemical sludge is saved; by use of the texaco coal gasification furnace in the prior art for processing the coal water slurry with the biochemical sludge, biochemical sludge treatment equipment investment is reduced, no new processing equipment is needed, and the method has good economic and social benefits.
Description
Technical field
The present invention relates to a kind for the treatment of process of biochemical sludge, when preparing coal water slurry, biochemical sludge is mixed into, coal water slurry is passed into (texaco gasifier is as gasification installation) in texaco gasifier, utilize the high heat produced in coal gasification course to reach the object of sludge treatment.Described biochemical sludge is a kind of general term, the treatment process that the mud that every biochemical process disposes of sewage generation all can adopt the present invention to provide.
Background technology
Chemical industry is the conventional column industry of China, and industrial chemicals and the product of production are widely used in every field.The a large amount of waste water produced in the production process of chemical enterprise process mainly through biochemical process, thus produce a large amount of biochemical sludges.Biochemical sludge has the double properties of contaminative and resource: the contaminative of biochemical sludge is embodied in containing hazardous and noxious substances such as pathogenic microorganism, organism (particularly toxic organism) and heavy metals in biochemical sludge, and these objectionable impuritiess likely cause very large harm to environment, the mankind and animal health; The resource of biochemical sludge is embodied in containing a large amount of N, P, K, Ca, organic matter and the necessary many trace elements of plant in mud, is good soil improvement agent and fertilizer.The more important thing is, biochemical sludge contains more combustiblecomponents, and dry base Lower heat value, at more than 11MJ/kg, is equivalent to meager coal or brown coal inferior, has very high energy utilization and is worth.
Existing sludge treatment means mainly contain Land_use change, landfill and burning.But the biochemical sludge that process wastewater from chemical industry produces is high due to its organic content, is not suitable for Land_use change; Landfill can produce transudate welding, and takies a large amount of soil, so the processing mode of landfill is forbidden by various countries gradually; Because the water ratio of biochemical sludge is up to 96 ~ 99%, also up to 70% ~ 85% after mechanical dehydration, first sludge incineration will carry out drying and other treatment to mud, usually after mechanical drying, most moisture in diafiltration or Evaporation removing mud again, then burned, the cost building incinerator is very high, and the smoke pollution produced in burning process and waste residue also need corresponding post-treatment measure, so utilize burning method process biochemical sludge to be also very restricted.
Coal water slurry coal grinding (being generally wet grinding) is become certain particle size (mean particle size is 40 μm ~ 60 μm, be generally about 50 μm), mix and strong stirring by certain mass ratio with water and additive, be prepared into coal-water two-phase flow slurry, wherein by mass percentage, coal dust accounts for 59 ~ 69%, and water accounts for 30 ~ 40%, and additive accounts for 0.1 ~ 1%.Because whole process is carried out at normal temperatures, so coal water slurry not only maintains the original physical property of coal, and there is good mobility and stability, be easy to handling, storage, Cemented filling and atomization space burning, the techniques such as gas maked coal, industrial furnace, Industrial Boiler and station boiler can be widely used in.Coal water slurry water distribution used can be the wastewater from chemical industry that clear water or character are suitable.Texaco gasifier take coal water slurry as raw material, and coal water slurry and pure oxygen enter in stove through burner with jet-like, react at high temperature under high pressure, and generating process gas, obtains hydrogen through purifying.
Biochemical sludge is utilized also to have some to study at home to prepare coal water slurry." industrial poison sewage or mud fluidized bed incinerating method for treatment " (application number: 93121185.9) disclose a kind of by industrial sewage or mud to make coal water slurry, and for the method for fluidized combustion." a kind of sludge water-coal-slurry and preparation method thereof " (application number: 201210238484.4) disclose a kind of method utilizing the raw materials such as dyeing waste water, mud, coal dust, properties-correcting agent to prepare sludge water-coal-slurry." a kind of method of producing gas from sludge " (application number: 201010118169.9) disclose one and utilize mud to make sludge coal slurry, then prepare the method for coal gas.Above-mentioned patent mainly concentrates on the preparation of sludge water-coal-slurry, and the final treatment process for sludge water-coal-slurry is fluidized combustion or prepares coal gas.
Summary of the invention
For the shortcoming that prior art exists, the object of the present invention is to provide a kind for the treatment of process of biochemical sludge, water distribution, biochemical sludge, coal and additive are made coal water slurry in rod mill, obtained coal water slurry is passed in texaco gasifier, under the high temperature conditions, mud in coal water slurry decomposes completely, thus reaches the object of sludge treatment.
For realizing above target, the technical scheme that the present invention takes is:
A kind for the treatment of process of biochemical sludge, it is characterized in that: be mixed into biochemical sludge when preparing coal water slurry, then with texaco gasifier, coal water slurry is at high temperature gasified, biochemical sludge is gasified totally realize biochemical sludge innoxious, in gasification, coal water slurry decomposes generating process gas, and the finished product are hydrogen.
On the basis of technique scheme, comprise the following steps:
Step 1: preparation coal water slurry: coal, water distribution, biochemical sludge and additive are joined in rod mill by ratio of quality and the number of copies, rod milling forms coal water slurry;
Step 2: coal water slurry stores: the coal water slurry prepared is stored stand-by;
Step 3: texaco gasifier gasification process: the coal water slurry stored is sent into texaco gasifier, and simultaneously pass into oxygen in texaco gasifier, oxygen coal ratio is 480 ~ 500, described oxygen coal is than the ratio of volumetric flow rate referring to oxygen and coal water slurry;
At high temperature, coal water slurry is at gasification layer gasification also generating process gas and the slag of texaco gasifier;
The Quench Duan Houcong process gas outlet that process gas enters texaco gasifier is discharged, and obtains hydrogen through subsequent purification unit;
Slag enters Quench section after fixing, discharges from grey lock hopper.
On the basis of technique scheme, in step 1, the concrete proportioning of each component is as follows:
60 ~ 70 parts, coal,
Biochemical sludge 0.5 ~ 5 part,
Water distribution 30 ~ 40 parts,
Additive 0.1 ~ 1 part.
On the basis of technique scheme, the water distribution of described preparation coal water slurry is: one of any in Cyclohexanone Waste Water, nitrobenzene waste water, nitro-chlorobenzene waste water, clear water.
On the basis of technique scheme, the water ratio of described biochemical sludge is 75% ~ 85%.
On the basis of technique scheme, described additive is one of any in sulfonated lignin, humate or naphthalene sulfonic acidformaldehyde condensation product.
On the basis of technique scheme, viscosity in aqueous coal slurries prepared by step 1 is 700 ~ 1400mPa.S.
The treatment process of biochemical sludge of the present invention, its advantage is:
1, biochemical sludge is without the need to mummification, can be directly used in preparation coal water slurry, thus saves expense needed for biochemical sludge mummification;
2, utilize existing texaco gasifier to process the coal water slurry containing biochemical sludge, decrease the facility investment of biochemical sludge process;
3, the economic benefit that the present invention produces is to utilize the existing production equipment of enterprise to process biochemical sludge, without the need to newly-built treatment facility, has good economic benefit and social benefit.
Accompanying drawing explanation
The present invention has following accompanying drawing:
Fig. 1 is process flow sheet of the present invention.
Fig. 2 is the equipment schematic diagram of texaco gasifier.
Embodiment
The present invention gives a kind for the treatment of process of biochemical sludge, its core concept is: be mixed into biochemical sludge when preparing coal water slurry, then with texaco gasifier, coal water slurry is at high temperature gasified, biochemical sludge is gasified totally realize biochemical sludge innoxious, in gasification, coal water slurry decomposes generating process gas, and the finished product are hydrogen.The equipment schematic diagram of texaco gasifier is see Fig. 2.
As shown in Figure 1, the present invention comprises the following steps specifically:
Step 1: preparation coal water slurry: coal, water distribution, biochemical sludge and additive are joined in rod mill by ratio of quality and the number of copies, rod milling forms coal water slurry, and the concrete proportioning of each component is as follows:
60 ~ 70 parts, coal, in span, every increasing or decreasing 1 part all can be used as a selectable specific embodiment,
Biochemical sludge 0.5 ~ 5 part, in span, every increasing or decreasing 0.1 part all can be used as a selectable specific embodiment,
Water distribution 30 ~ 40 parts, in span, every increasing or decreasing 1 part all can be used as a selectable specific embodiment,
Additive 0.1 ~ 1 part, in span, every increasing or decreasing 0.1 part all can be used as a selectable specific embodiment;
The water distribution of described preparation coal water slurry is: one of any in Cyclohexanone Waste Water, nitrobenzene waste water, nitro-chlorobenzene waste water, clear water;
Step 2: coal water slurry stores: the coal water slurry prepared is stored stand-by, such as, stores in coal slurry tank by pump delivery;
Step 3: texaco gasifier gasification process: the coal water slurry stored is sent into texaco gasifier, in texaco gasifier, pass into oxygen simultaneously, oxygen coal ratio (oxygen coal is than the ratio of volumetric flow rate referring to oxygen and coal water slurry) is 480 ~ 500, and such as oxygen coal ratio is 480,485,490,495 or 500;
At high temperature, coal water slurry is at gasification layer gasification also generating process gas and the slag of texaco gasifier;
The Quench Duan Houcong process gas outlet that process gas enters texaco gasifier is discharged, and obtains hydrogen through subsequent purification unit;
Slag enters Quench section after fixing, discharges from grey lock hopper.
Such as: utilize surge pump that the coal water slurry in coal slurry tank is transported to the feed(raw material)inlet of texaco gasifier, in texaco gasifier, pass into oxygen simultaneously, coal water slurry and oxygen enter the gasification layer of texaco gasifier, coal water slurry is at 1350 ~ 1400 DEG C of gasified generating process gas and produce slag, mud in coal water slurry is gasified totally under the condition of 1350 ~ 1400 DEG C, achieve sewage sludge harmlessness, described temperature condition every increasing or decreasing 1 DEG C in span all can be used as a selectable specific embodiment.
On the basis of technique scheme, the water ratio of described biochemical sludge is 75% ~ 85%, and in span, every increasing or decreasing 1% all can be used as a selectable specific embodiment.
On the basis of technique scheme, described additive is one of any in sulfonated lignin, humate or naphthalene sulfonic acidformaldehyde condensation product.
On the basis of technique scheme, viscosity in aqueous coal slurries prepared by step 1 is 700 ~ 1400mPa.S, such as: viscosity is 700,800,900,1000,1100,1200,1300 or 1400mPa.S.
Be below some embodiments:
Embodiment 1: be that the biochemical sludge 0.5 part of 75%, Cyclohexanone Waste Water 30 parts and sulfonated lignin 0.5 part join in rod mill in mass ratio by 70 parts, coal, water ratio, rod milling forms coal water slurry, viscosity in aqueous coal slurries, between 700 ~ 1400mPa.S, meets processing requirement.The coal water slurry pump delivery prepared is stored in coal slurry tank, utilize surge pump that the coal water slurry in coal slurry tank is transported to the feed(raw material)inlet of texaco gasifier, oxygen coal ratio is 480, coal water slurry and oxygen enter the gasification layer of texaco gasifier, produce slag at 1350 DEG C of gasified generating process gas, the mud in coal water slurry is gasified totally under condition at 1350 DEG C.Process gas enters the outlet of Quench Duan Houcong process gas and discharges, and obtains hydrogen through subsequent purification unit.Slag enters Quench section after fixing, and discharges from grey lock hopper.In gasification, burnout rate is greater than 98%, and Ash residue rate is less than 8%.
Embodiment 2: be that the biochemical sludge 5 parts of 85%, nitrobenzene waste water 40 parts and humate 1 part join in rod mill in mass ratio by 60 parts, coal, water ratio, rod milling forms coal water slurry, and viscosity in aqueous coal slurries, between 700 ~ 1400mPa.S, meets processing requirement.The coal water slurry pump delivery prepared is stored in coal slurry tank, utilize surge pump that the coal water slurry in coal slurry tank is transported to the feed(raw material)inlet of texaco gasifier, coal water slurry and oxygen enter the gasification layer of texaco gasifier, oxygen coal ratio is 500, produce slag at 1400 DEG C of gasified generating process gas, the mud in coal water slurry is gasified totally under condition at 1400 DEG C.Process gas enters the outlet of Quench Duan Houcong process gas and discharges, and obtains hydrogen through subsequent purification unit.Slag enters Quench section after fixing, and discharges from grey lock hopper.In gasification, burnout rate is greater than 98%, and Ash residue rate is less than 8%.
Embodiment 3: be that the biochemical sludge 3 parts of 80%, nitro-chlorobenzene waste water 35 parts and naphthalene sulfonic acidformaldehyde condensation product 0.1 part join in rod mill in mass ratio by 65 parts, coal, water ratio, rod milling forms coal water slurry, viscosity in aqueous coal slurries is between 700 ~ 1400mPa.S, meets processing requirement.The coal water slurry pump delivery prepared is stored in coal slurry tank, utilize surge pump that the coal water slurry in coal slurry tank is transported to the feed(raw material)inlet of texaco gasifier, coal water slurry and oxygen enter the gasification layer of texaco gasifier, oxygen coal ratio is 490, produce slag at 1380 DEG C of gasified generating process gas, the mud in coal water slurry is gasified totally under condition at 1380 DEG C.Process gas enters the outlet of Quench Duan Houcong process gas and discharges, and obtains hydrogen through subsequent purification unit.Slag enters Quench section after fixing, and discharges from grey lock hopper.In gasification, burnout rate is greater than 98%, and Ash residue rate is less than 8%.
Embodiment 4: be that the biochemical sludge 2 parts of 79%, 37 parts, clear water and naphthalene sulfonic acidformaldehyde condensation product 0.8 part join in rod mill in mass ratio by 63 parts, coal, water ratio, rod milling forms coal water slurry, viscosity in aqueous coal slurries, between 700 ~ 1400mPa.S, meets processing requirement.Utilize surge pump that the coal water slurry in coal slurry tank is transported to the feed(raw material)inlet of texaco gasifier by storing in the coal water slurry pump delivery prepared to coal slurry tank, coal water slurry and oxygen enter the gasification layer of texaco gasifier, oxygen coal ratio is 480, produce slag at 1370 DEG C of gasified generating process gas, the mud in coal water slurry is gasified totally under condition at 1370 DEG C.Process gas enters the outlet of Quench Duan Houcong process gas and discharges, and obtains hydrogen through subsequent purification unit.Slag enters Quench section after fixing, and discharges from grey lock hopper.In gasification, burnout rate is greater than 98%, and Ash residue rate is less than 8%.
The content be not described in detail in this specification sheets belongs to the known prior art of professional and technical personnel in the field.
Claims (7)
1. the treatment process of a biochemical sludge, it is characterized in that: be mixed into biochemical sludge when preparing coal water slurry, then with texaco gasifier, coal water slurry is at high temperature gasified, biochemical sludge is gasified totally realize biochemical sludge innoxious, in gasification, coal water slurry decomposes generating process gas, and the finished product are hydrogen.
2. the treatment process of biochemical sludge as claimed in claim 1, is characterized in that: comprise the following steps:
Step 1: preparation coal water slurry: coal, water distribution, biochemical sludge and additive are joined in rod mill by ratio of quality and the number of copies, rod milling forms coal water slurry;
Step 2: coal water slurry stores: the coal water slurry prepared is stored stand-by;
Step 3: texaco gasifier gasification process: the coal water slurry stored is sent into texaco gasifier, and simultaneously pass into oxygen in texaco gasifier, oxygen coal ratio is 480 ~ 500, described oxygen coal is than the ratio of volumetric flow rate referring to oxygen and coal water slurry;
At high temperature, coal water slurry is at gasification layer gasification also generating process gas and the slag of texaco gasifier;
The Quench Duan Houcong process gas outlet that process gas enters texaco gasifier is discharged, and obtains hydrogen through subsequent purification unit;
Slag enters Quench section after fixing, discharges from grey lock hopper.
3. the treatment process of biochemical sludge as claimed in claim 2, is characterized in that: in step 1, the concrete proportioning of each component is as follows:
60 ~ 70 parts, coal,
Biochemical sludge 0.5 ~ 5 part,
Water distribution 30 ~ 40 parts,
Additive 0.1 ~ 1 part.
4. the treatment process of biochemical sludge as claimed in claim 2, is characterized in that: the water distribution of described preparation coal water slurry is: one of any in Cyclohexanone Waste Water, nitrobenzene waste water, nitro-chlorobenzene waste water, clear water.
5. the treatment process of biochemical sludge as claimed in claim 2, is characterized in that: the water ratio of described biochemical sludge is 75% ~ 85%.
6. the treatment process of biochemical sludge as claimed in claim 2, is characterized in that: described additive is one of any in sulfonated lignin, humate or naphthalene sulfonic acidformaldehyde condensation product.
7. the treatment process of biochemical sludge as claimed in claim 2, is characterized in that: viscosity in aqueous coal slurries prepared by step 1 is 700 ~ 1400mPa.S.
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Cited By (10)
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| CN105482860A (en) * | 2016-01-21 | 2016-04-13 | 中国寰球工程公司辽宁分公司 | Treatment method of methanol rectification wastewater in coal chemical industry |
| CN106190375A (en) * | 2016-08-17 | 2016-12-07 | 中国石化长城能源化工（宁夏）有限公司 | A kind of industry Ramsbottom carbon powder and biochemical sludge are mixed with water-coal-slurry method |
| CN106475393A (en) * | 2015-08-27 | 2017-03-08 | 中国石油化工股份有限公司 | A kind of acetic acid residue method for innocent treatment |
| CN106833778A (en) * | 2017-04-20 | 2017-06-13 | 福建清源科技有限公司 | A kind of method that recycling sludge treatment prepares water-coal-slurry |
| CN108558157A (en) * | 2018-06-20 | 2018-09-21 | 中煤陕西榆林能源化工有限公司 | A kind of biochemical sludge processing system and processing method |
| CN108624900A (en) * | 2018-05-24 | 2018-10-09 | 浙江大学 | A method of with waste liquor coal liquid electrolytic hydrogen production |
| CN109020109A (en) * | 2018-07-17 | 2018-12-18 | 陕西科技大学 | A kind of regulation method of biochemical sludge particle apparent property parameter |
| CN110041937A (en) * | 2019-05-23 | 2019-07-23 | 内蒙古博大实地化学有限公司 | A kind of soil conditioner and its preparation method and application |
| CN114772794A (en) * | 2022-05-24 | 2022-07-22 | 中国石油化工股份有限公司 | Method for cooperatively treating nitrobenzene wastewater by coal water slurry technology |
| CN114853217A (en) * | 2022-05-24 | 2022-08-05 | 中国石油化工股份有限公司 | Device and method for cooperatively treating nitrobenzene wastewater by using coal water slurry technology |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN106833778A (en) * | 2017-04-20 | 2017-06-13 | 福建清源科技有限公司 | A kind of method that recycling sludge treatment prepares water-coal-slurry |
| CN106833778B (en) * | 2017-04-20 | 2018-10-09 | 福建清源科技有限公司 | A kind of method that recycling sludge processing prepares water-coal-slurry |
| CN108624900A (en) * | 2018-05-24 | 2018-10-09 | 浙江大学 | A method of with waste liquor coal liquid electrolytic hydrogen production |
| CN108558157A (en) * | 2018-06-20 | 2018-09-21 | 中煤陕西榆林能源化工有限公司 | A kind of biochemical sludge processing system and processing method |
| CN109020109A (en) * | 2018-07-17 | 2018-12-18 | 陕西科技大学 | A kind of regulation method of biochemical sludge particle apparent property parameter |
| CN110041937A (en) * | 2019-05-23 | 2019-07-23 | 内蒙古博大实地化学有限公司 | A kind of soil conditioner and its preparation method and application |
| CN114772794A (en) * | 2022-05-24 | 2022-07-22 | 中国石油化工股份有限公司 | Method for cooperatively treating nitrobenzene wastewater by coal water slurry technology |
| CN114853217A (en) * | 2022-05-24 | 2022-08-05 | 中国石油化工股份有限公司 | Device and method for cooperatively treating nitrobenzene wastewater by using coal water slurry technology |
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Application publication date: 20141231 |