CN109422440A - A kind of innoxious drying device and method of sulfur-bearing sludge - Google Patents
A kind of innoxious drying device and method of sulfur-bearing sludge Download PDFInfo
- Publication number
- CN109422440A CN109422440A CN201710731950.5A CN201710731950A CN109422440A CN 109422440 A CN109422440 A CN 109422440A CN 201710731950 A CN201710731950 A CN 201710731950A CN 109422440 A CN109422440 A CN 109422440A
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- Prior art keywords
- sulfur
- gas
- bearing sludge
- sludge
- bearing
- Prior art date
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- Pending
Links
- 239000010802 sludge Substances 0.000 title claims abstract description 85
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title claims abstract description 80
- 239000011593 sulfur Substances 0.000 title claims abstract description 72
- 229910052717 sulfur Inorganic materials 0.000 title claims abstract description 72
- 238000001035 drying Methods 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000010438 heat treatment Methods 0.000 claims abstract description 39
- 238000009833 condensation Methods 0.000 claims abstract description 31
- 230000005494 condensation Effects 0.000 claims abstract description 31
- 230000006835 compression Effects 0.000 claims abstract description 16
- 238000007906 compression Methods 0.000 claims abstract description 16
- 239000007789 gas Substances 0.000 claims description 85
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 31
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 20
- 238000001179 sorption measurement Methods 0.000 claims description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims description 7
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 6
- 238000006386 neutralization reaction Methods 0.000 claims description 3
- 231100000614 poison Toxicity 0.000 claims description 3
- 230000007096 poisonous effect Effects 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 2
- 239000010801 sewage sludge Substances 0.000 claims description 2
- 239000005864 Sulphur Substances 0.000 abstract description 8
- 239000000126 substance Substances 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 abstract description 2
- 235000001508 sulfur Nutrition 0.000 description 51
- 231100000331 toxic Toxicity 0.000 description 6
- 230000002588 toxic effect Effects 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 231100000572 poisoning Toxicity 0.000 description 3
- 230000000607 poisoning effect Effects 0.000 description 3
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- DNJIEGIFACGWOD-UHFFFAOYSA-N ethanethiol Chemical compound CCS DNJIEGIFACGWOD-UHFFFAOYSA-N 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Biomedical Technology (AREA)
- Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Water Supply & Treatment (AREA)
- Hydrology & Water Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Treatment Of Sludge (AREA)
- Drying Of Solid Materials (AREA)
- Treating Waste Gases (AREA)
Abstract
The present invention relates to a kind of innoxious drying device of sulfur-bearing sludge and methods.The drying device includes the sulfur-bearing sludge heating device being linked in sequence, to the condensing unit that sulfur-bearing sludge adds thermogenetic gas to be condensed, and condensation Flash Gas Compression Skid System.The innoxious drying device of sulfur-bearing sludge of the invention carries out gas-liquid separation by the gas that condensing unit generates heating device, to effectively remove the vapor and part sulfurous gas in dry gas, improves the treatment effeciency of subsequent condensation gas sulphur removal process；Condensing gas sulphur-containing substance concentration is high, after simply removing sulphuring treatment, can conveniently reach discharge standard.
Description
Technical field
The invention belongs to the process fields of sludge, and in particular to a kind of innoxious drying device and method of sulfur-bearing sludge.
Background technique
Sludge is the waste generated in wastewater treatment process, dirty containing a large amount of bacterium, chemical agent residue and moisture
Mud can generate corruption during storage, form stench, pollute environment.The sulfur-bearing sludge generated in sulfur Gas Fields water treatment procedure
Also containing impurity such as a large amount of elemental sulfurs, sulfated polymers, processing difficulty is big, treatment process degree of danger is high.
Currently, mainly pass through filter press is pressed into mud cake for sludge to sulfur-bearing Treatment of Sludge, then transhipment is handled, due to mud cake
Moisture content is higher, and containing poisonous and harmful substances such as corrosion inhibiter, retarder, coagulant, elemental sulfurs, there is dirt in transport process
Leaked water, the risk of the hazardous gases such as hydrogen sulfide, sulfur dioxide evolution are easy to cause the things such as environmental pollution, personnel's poisoning, explosion
Therefore occur.
The patent that application publication number is CN106746468A discloses a kind of sludge treating system and treatment process.The technique
Sludge is stablized into shale quality through sludge concentration tank first, enters sludge conditioning pond later by conditioner and adds carry out sludge
Broken wall, then entering high-pressure machinery plate and frame filter press filters pressing to moisture content is 55%~60%, and it is dry to subsequently enter drying sludge furnace
Dry to water content is 10% hereinafter, the sludge after dry prepares charcoal through charing again.
In the treatment process of sludge, the drying of sludge is important link, by drying sludge to moisture content be 10% hereinafter,
It not only contributes to improve the safety of operation process, is also conducive to improve the efficiency of subsequent burning process.The toxic of sulfur-bearing sludge has
Evil content of material is higher, and the prior art lacks a kind of innoxious dry technology of sulfur-bearing sludge.
Summary of the invention
The purpose of the present invention is to provide a kind of innoxious drying devices of sulfur-bearing sludge, to solve the nothing of sulfur-bearing sludge
Evilization dries problem.Present invention simultaneously provides a kind of innoxious drying means of sulfur-bearing sludge.
To achieve the above object, the technical solution of the innoxious drying device of sulfur-bearing sludge of the invention is:
A kind of innoxious drying device of sulfur-bearing sludge, the sulfur-bearing sludge heating device including sequential connection, to sulfur-bearing dirt
The condensing unit that mud adds thermogenetic gas to be condensed, and condensation Flash Gas Compression Skid System.
The innoxious drying device of sulfur-bearing sludge of the invention is carried out by the gas that condensing unit generates heating device
Gas-liquid separation improves the place of subsequent condensation gas sulphur removal process to effectively remove the vapor and part sulfurous gas in dry gas
Manage efficiency；Condensing gas sulphur-containing substance concentration is high, after simply removing sulphuring treatment, can conveniently reach discharge standard.
The condensing unit includes the drainer being arranged inside and outside and circulation water pot, has between drainer and circulation water pot and supplies
The circulation passage of cooling medium circulation, drainer are connected with the sulfur-bearing sludge heating device.Using the condensation of this kind of form
Device, structure is simple, cost of layout is low, condensation effect is good, drainer and circulation can be adjusted flexibly according to condensing gas process demand
Water tank capacity.
Preferably, the drainer is also connected with condensing hot air furnace tank, condensing hot air furnace tank and condensation Flash Gas Compression Skid System it
Between be connected with for the gas in condensed water recycling can be discharged into condensation Flash Gas Compression Skid System connecting pipe.
Preferably, multiple baffles are equipped at intervals with along length of tank direction in drainer, baffle top and opposed inner walls face it
Between the interval flowed through of gas that is generated with supplying/heating system, the two neighboring drainer two sides that are spaced in are oppositely arranged to form confession
The U-shaped channel that the gas that heating device generates passes through drainer.U-shaped channel is constituted using the baffle of this kind of form, gas can be increased
Condensation time and heat exchange area of the body in drainer improve condensation effect.
It is described condensation Flash Gas Compression Skid System include be linked in sequence lye in and device and activated carbon adsorption device.Pass through this kind
The condensation Flash Gas Compression Skid System of combination can effectively remove sulfurous gas and other toxic and harmful gas in condensing gas, through handling
Gas afterwards is much higher than national emission standard.
The connecting pipe of sulfur-bearing sludge heating device and condensing unit is equipped with for detecting the wet of sulfur-bearing moisture percentage in sewage sludge
Spend detection device.The nitrogen that sulfur-bearing sludge heating device includes heating tank and purged for being passed through nitrogen into heating tank
Tank.Nitrogen purging is carried out to heating tank by setting nitrogen gas tank, can effectively displace remaining toxic and harmful gas in heating tank,
Further promote operational security.
The sulfur-bearing sludge heating device includes heating tank and the sludge barrel in heating tank.The sulfur-bearing of this kind of form is dirty
Mud heating device, structure is simple, and sludge barrel is easy to change.
In the connecting pipe of the sulfur-bearing sludge heating device and condensing unit and outlet of condensation Flash Gas Compression Skid System is equipped with
Gas-detecting device.Whether the gas that gas-detecting device is used to detect in drying device reaches discharge standard.
The technical solution of the innoxious drying means of sulfur-bearing sludge of the invention is:
A kind of innoxious drying means of sulfur-bearing sludge, comprising the following steps: by sulfur-bearing sludge heat drying, heat drying
The gas of generation separates condensed water and condensing gas after condensation process, puts to condensation gas disposal heel row.
The innoxious drying means of sulfur-bearing sludge provided by the invention by the heat drying to sulfur-bearing sludge, and will add
The gas (dry gas) that heated drying generates separates condensed water and condensing gas through condensation process, steams to effectively remove the water in dry gas
Gas and part aqueous ingredient improve the treatment effeciency of subsequent condensation gas sulphur removal process；Condensing gas sulphur-containing substance concentration is high, through letter
After list removes sulphuring treatment, it can conveniently reach discharge standard.The innoxious drying means of the sulfur-bearing sludge, the processing to sulfur-bearing sludge
High-efficient, high treating effect can effectively avoid the environmental pollution occurred during sulfur-bearing drying sludge, personnel's poisoning and explosion wind
Danger, operation safe operation process, convenient.
In the innoxious drying means of above-mentioned sulfur-bearing sludge, sulfur-bearing sludge heat drying to moisture content is not higher than 10%
Afterwards, nitrogen is passed through into system to be purged, to displace remaining toxic and harmful gas in system.
The condensation is that the gas for generating heat drying is condensed to 30 DEG C or less.
In the innoxious drying means of above-mentioned sulfur-bearing sludge, the processing to condensing gas includes successively carrying out lye neutralisation treatment
It is handled with activated carbon adsorption.The sulfurous gas in condensing gas can be effectively removed by this kind of combination progress sulphur removal has with other
Malicious pernicious gas, gas after processing are much higher than national emission standard.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the innoxious drying device of the sulfur-bearing sludge of the first embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the innoxious drying device of the sulfur-bearing sludge of the second embodiment of the present invention；
Fig. 3 is the structural schematic diagram of the innoxious drying device of the sulfur-bearing sludge of the third embodiment of the present invention.
Specific embodiment
Embodiments of the present invention are described further with reference to the accompanying drawing.
The embodiment of the innoxious drying device of sulfur-bearing sludge of the invention, structural schematic diagram is as shown in Figure 1, include sequence
Sulfur-bearing sludge heating device 1, condensing unit 2 and the condensation Flash Gas Compression Skid System 3 of connection, sulfur-bearing sludge heating device 1 includes heating
Tank 101 and nitrogen gas tank 105, heating tank 101 is interior to be equipped with sludge barrel 102, and heating tank 101 includes the tank body and cover board of sealing cooperation,
Partition is equipped in tank body, tank inner chamber is separated into heating chamber 103 and superposed sludge barrel positioned at lower part by the partition
Accommodating cavity has gap between sludge barrel and tank body, the gap, which is formed, accommodates the gas space that heat drying process generates gas
Between；Nitrogen gas tank 105 is connected by connecting line with the gas compartment of sulfur-bearing sludge heating device, and connecting line is equipped with first
Valve 104.
Condensing unit 2 includes the drainer 204 being arranged inside and outside, circulation water pot 201, the clear water being arranged in parallel with circulation water pot
Tank 203, and the condensing hot air furnace tank 209 being arranged in parallel with drainer 204；Drainer 204 is dirty by connecting pipe and sulfur-bearing
The gas compartment of mud heating device is connected, and connecting pipe is equipped with humidity detector 106, the second valve 107 and the first gas
Physical examination side valve door 108；Multiple baffles, baffle top and opposed inner walls face are equipped at intervals with along length of tank direction in drainer 204
Between there is the gap crossed for dry gas stream, the two neighboring drainer two sides that are spaced in are oppositely arranged to form supplying/heating system production
The U-shaped channel that raw gas passes through drainer；The bottom of drainer is connected with multiple for the condensed water of formation to be discharged into condensation
The drainpipe of water recovery tank 209, drainpipe are equipped with third valve 208, the top of condensing hot air furnace tank 209 by exhaust pipe with
Condensation Flash Gas Compression Skid System 3 is connected, and exhaust pipe is equipped with the 4th valve 305.Clean water tank 203 passes through outlet pipe and water inlet pipe and follows
Ring water pot 201 is connected, and water pump 202 and the 5th valve 205 are in series on outlet pipe, and water inlet pipe is equipped with the 6th valve 206；It is cold
There is gap, the gap forms recirculated water together with clean water tank 203 and its inlet and outlet pipes and follows between solidifying tank 204, circulation water pot 201
Ring flow channel.
Condensation Flash Gas Compression Skid System includes the gas vent of drainer in lye and device 301 and activated carbon adsorption device 302
It is connected with the entrance in lye with device by connecting pipe, connecting pipe is equipped with the 7th valve 207；In lye and device
301 are connected with activated carbon adsorption device 302 by connecting pipe, and connecting pipe is equipped with the 8th valve 303, activated carbon adsorption
The outlet of device is equipped with second gas detection valve 306 and emptying valve 304.
The course of work of the innoxious drying device of the sulfur-bearing sludge of the present embodiment is as follows: filling the sludge barrel of sulfur-bearing sludge
The heat drying in heating tank, until moisture content be lower than 10%, heat drying process generate drying gas by connecting pipe into
Enter drainer, dry gas carries out heat exchange with outer loop water in the serpentine channel of drainer, and dry air cooling is coagulated to 30 DEG C
Hereinafter, condensed water caused by condensing enters condensing hot air furnace tank, the gas and condensing gas in condensing hot air furnace tank enter condensation
Flash Gas Compression Skid System carries out sulphur removal, and condensing gas is neutralized through lye, after activated carbon adsorption processing, after gas detection meets discharge standard
Emptying discharge；After the moisture content of sulfur-bearing sludge after detection is up to standard, nitrogen is passed through into drying device from nitrogen gas tank and is purged,
To displace remaining toxic and harmful gas in drying device, discharged after gas detection meets discharge standard.
In the other embodiments of the drying device of sulfur-bearing sludge of the invention, other shapes are can be used in sulfur-bearing sludge heating device
Formula is such as not provided with partition, and arranges heater strip on the cylindrical inner wall of tank body；The shape of cooling water jecket can be used in condensing unit
Formula；It can be not provided with nitrogen gas tank, and the pipeline by the way that connection compressed gas is arranged on heating tank carries out the gas in heating tank
Purging displacement (as shown in Figure 2)；It can be not provided with condensing hot air furnace tank, it can (as shown in Figure 3) to the processing of condensed water centralized collection；
Condensing Flash Gas Compression Skid System can be individually using lye absorption or activated carbon adsorption, other, which can also be used, can remove the dress of sulfurous gas
It sets.
Above-mentioned drying device is that sulfur-bearing sludge is dried using following drying means, comprising: heats sulfur-bearing sludge
Dry, the gas that heat drying generates separates condensed water and condensing gas after condensation process, puts to condensation gas disposal heel row.
Condensation process coagulates dry air cooling to 30 DEG C hereinafter, successively carrying out at lye neutralisation treatment and activated carbon adsorption again
Reason can effectively remove sulfurous gas and other toxic and harmful gas in condensing gas.Sulfur-bearing sludge after drying it is poisonous and harmful
Substance largely reduces, and effectively prevents environmental pollution, personnel's poisoning and risk of explosion.
Claims (10)
1. a kind of innoxious drying device of sulfur-bearing sludge, which is characterized in that the sulfur-bearing sludge heating device including sequential connection,
To the condensing unit that sulfur-bearing sludge adds thermogenetic gas to be condensed, and condensation Flash Gas Compression Skid System.
2. the innoxious drying device of sulfur-bearing sludge as described in claim 1, which is characterized in that the condensing unit includes interior
The drainer and circulation water pot of outer setting, have the circulation passage for condensing flow of media between drainer and circulation water pot, cold
Solidifying tank is connected with the sulfur-bearing sludge heating device.
3. the innoxious drying device of sulfur-bearing sludge as claimed in claim 2, which is characterized in that the drainer is also connected with
Condensing hot air furnace tank is connected between condensing hot air furnace tank and condensation Flash Gas Compression Skid System and is discharged into for the gas in condensed water recycling can
Condense the connecting pipe of Flash Gas Compression Skid System.
4. the innoxious drying device of sulfur-bearing sludge as claimed in claim 2, which is characterized in that along length of tank in drainer
Direction is equipped at intervals with multiple baffles, between the gas generated between baffle top and opposed inner walls face with supplying/heating system flows through
Every the two neighboring drainer two sides that are spaced in are oppositely arranged to form the U-shaped that the gas of supplying/heating system generation passes through drainer
Channel.
5. the innoxious drying device of sulfur-bearing sludge as described in claim 1, which is characterized in that the condensation Flash Gas Compression Skid System
In lye including sequential connection and device and activated carbon adsorption device.
6. the innoxious drying device of sulfur-bearing sludge as described in claim 1, which is characterized in that sulfur-bearing sludge heating device and
The connecting pipe of condensing unit is equipped with the humidity detector for detecting sulfur-bearing moisture percentage in sewage sludge.
7. the innoxious drying device of sulfur-bearing sludge as described in claim 1 or 6, which is characterized in that sulfur-bearing sludge heating dress
The nitrogen gas tank set including heating tank and purged for being passed through nitrogen into heating tank.
8. a kind of innoxious drying means of sulfur-bearing sludge, which comprises the following steps: heat sulfur-bearing sludge dry
Dry, the gas that heat drying generates separates condensed water and condensing gas after condensation process, puts to condensation gas disposal heel row.
9. the innoxious drying means of sulfur-bearing sludge as claimed in claim 8, which is characterized in that by sulfur-bearing sludge heat drying
After being not higher than 10% to moisture content, nitrogen is passed through into system and is purged, to displace remaining poisonous and harmful gas in system
Body.
10. the innoxious drying means of sulfur-bearing sludge as claimed in claim 8, which is characterized in that the processing packet of condensing gas
It includes and successively carries out lye neutralisation treatment and activated carbon adsorption processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710731950.5A CN109422440A (en) | 2017-08-23 | 2017-08-23 | A kind of innoxious drying device and method of sulfur-bearing sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710731950.5A CN109422440A (en) | 2017-08-23 | 2017-08-23 | A kind of innoxious drying device and method of sulfur-bearing sludge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109422440A true CN109422440A (en) | 2019-03-05 |
Family
ID=65500260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710731950.5A Pending CN109422440A (en) | 2017-08-23 | 2017-08-23 | A kind of innoxious drying device and method of sulfur-bearing sludge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109422440A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB443452A (en) * | 1933-12-02 | 1936-02-28 | Chemical Construction Corp | Production of sulphur dioxide from acid sludge |
| US5215670A (en) * | 1990-02-26 | 1993-06-01 | Bio Gro Systems, Inc. | Process of drying and pelletizing sludge in indirect dryer having recycled sweep air |
| CN202237750U (en) * | 2011-08-25 | 2012-05-30 | 浙江大学 | Odor pollutant control system in city sludge drying process |
| CN207619242U (en) * | 2017-08-23 | 2018-07-17 | 中国石油化工股份有限公司 | A kind of innoxious drying device of sulfur-bearing sludge |
-
2017
- 2017-08-23 CN CN201710731950.5A patent/CN109422440A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB443452A (en) * | 1933-12-02 | 1936-02-28 | Chemical Construction Corp | Production of sulphur dioxide from acid sludge |
| US5215670A (en) * | 1990-02-26 | 1993-06-01 | Bio Gro Systems, Inc. | Process of drying and pelletizing sludge in indirect dryer having recycled sweep air |
| CN202237750U (en) * | 2011-08-25 | 2012-05-30 | 浙江大学 | Odor pollutant control system in city sludge drying process |
| CN207619242U (en) * | 2017-08-23 | 2018-07-17 | 中国石油化工股份有限公司 | A kind of innoxious drying device of sulfur-bearing sludge |
Non-Patent Citations (2)
| Title |
|---|
| 天津市跃进化工厂编: "《二甲基亚砜的制造》", vol. 1, 30 April 1973, 天津人民出版社, pages: 84 * |
| 徐志毅主编: "《环境保护技术和设备》", vol. 1, 31 December 1999, 上海交通大学出版社, pages: 312 * |
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