CN110606646A - Harmless treatment system and treatment process for oilfield sludge - Google Patents
Harmless treatment system and treatment process for oilfield sludge Download PDFInfo
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- CN110606646A CN110606646A CN201910872749.8A CN201910872749A CN110606646A CN 110606646 A CN110606646 A CN 110606646A CN 201910872749 A CN201910872749 A CN 201910872749A CN 110606646 A CN110606646 A CN 110606646A
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- rotary kiln
- belt conveyor
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- 239000010802 sludge Substances 0.000 title claims abstract description 92
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000002485 combustion reaction Methods 0.000 claims abstract description 49
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000003546 flue gas Substances 0.000 claims abstract description 40
- 239000007789 gas Substances 0.000 claims abstract description 32
- 238000010791 quenching Methods 0.000 claims abstract description 19
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 239000000779 smoke Substances 0.000 claims abstract description 13
- 239000002912 waste gas Substances 0.000 claims description 19
- 239000000428 dust Substances 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 9
- 239000003513 alkali Substances 0.000 claims description 8
- 230000003009 desulfurizing effect Effects 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 6
- 238000001179 sorption measurement Methods 0.000 claims description 6
- 238000011084 recovery Methods 0.000 claims description 4
- 241000208125 Nicotiana Species 0.000 claims description 3
- 235000002637 Nicotiana tabacum Nutrition 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- 235000019504 cigarettes Nutrition 0.000 claims 1
- 239000003921 oil Substances 0.000 description 49
- 230000000171 quenching effect Effects 0.000 description 6
- 239000002341 toxic gas Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 238000006477 desulfuration reaction Methods 0.000 description 4
- 230000023556 desulfurization Effects 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
- 230000003000 nontoxic effect Effects 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 239000003440 toxic substance Substances 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000003837 high-temperature calcination Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
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- 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
- C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
- F23G5/14—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
- F23G5/14—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion
- F23G5/16—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion in a separate combustion chamber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/20—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having rotating or oscillating drums
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
- F23G5/442—Waste feed arrangements
- F23G5/444—Waste feed arrangements for solid waste
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The embodiment of the invention discloses an oil field sludge harmless treatment system and a treatment process thereof, belonging to the technical field of oil field sludge treatment, the technical proposal is as follows, the system comprises a rotary dryer, a rotary kiln, a secondary combustion chamber, a quench tower and a flue gas treatment device, a second belt conveyor and a large-inclination belt conveyor are sequentially arranged between the outlet end of the rotary dryer and the inlet end of the rotary kiln, the blanking end of the large-inclination belt conveyor is positioned above the inlet end of the rotary kiln, a chute is arranged at the outlet end of the rotary kiln, a gas transmission pipeline is communicated between the rotary kiln and the secondary combustion chamber, a return air pipeline is communicated between the rotary dryer and the gas transmission pipeline, a circulating fan is arranged on the return air pipeline, a smoke outlet channel is communicated between the secondary combustion chamber and the quench tower, a gas transmission pipeline is arranged between the outlet end of the quench tower and the flue gas treatment device, when the oil field sludge is treated in the prior art, the problems of unclean and incomplete treatment of the sludge in the oil field and relatively complex process exist.
Description
Technical Field
The embodiment of the invention relates to the technical field of oilfield sludge treatment, and particularly relates to an oilfield sludge harmless treatment system and a treatment process thereof.
Background
The prior art for treating oily sludge is various, each method has respective advantages and disadvantages and application range, and the prior art for treating sludge at home and abroad has the following steps: biotechnology, sludge profile control technology, solvent extraction technology, thermochemical washing technology, pyrolysis treatment technology and the like.
The treatment of the oily sludge by utilizing the technologies has certain disadvantages, such as the utilization of a solvent extraction method can recover most of petroleum resources in the oily sludge, but the disadvantages of long flow, complex process, high treatment cost and the like exist at the same time; the biological treatment method has no secondary pollution when being used for treating the oily sludge, but has long treatment period; the chemical demulsification method is used for adding a demulsifier and heating for the oil sludge with serious emulsification, and the crude oil is difficult to treat; the solid-liquid separation method has low recovery rate of oil sludge with high oil content and serious pollution.
When the existing methods are used for treating the oily sludge, various disadvantages exist, so that the oily sludge is difficult to treat quickly and comprehensively.
Disclosure of Invention
Therefore, the embodiment of the invention provides an oil field sludge harmless treatment system and a treatment process thereof, which aim to solve the problems that the existing treatment of oil field sludge is not clean and thorough, and the process is relatively complex.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:
according to the first aspect of the embodiment of the invention, the oil field sludge harmless treatment system comprises a rotary dryer, a rotary kiln, a secondary combustion chamber, a quench tower and a flue gas treatment device, wherein a second belt conveyor and a large-inclination belt conveyor are sequentially arranged between an outlet end of the rotary dryer and an inlet end of the rotary kiln, a blanking end above the large-inclination belt conveyor is positioned above the inlet end of the rotary kiln, a chute is arranged at an outlet end of the rotary kiln, a gas transmission pipeline is communicated between the rotary kiln and the secondary combustion chamber, a return air pipeline is communicated between the rotary dryer and the gas transmission pipeline, a circulating fan is arranged on the return air pipeline, a flue gas outlet channel is communicated between the secondary combustion chamber and the quench tower, and a flue gas conveying pipeline is arranged between an outlet end of the quench tower and the flue gas treatment device.
Furthermore, a hot air outlet pipeline provided for the rotary dryer is arranged on the smoke outlet channel of the secondary combustion chamber, and the hot air outlet pipeline is communicated to the rotary dryer.
Furthermore, a first belt conveyor is arranged on one side of the rotary dryer, and the discharge end of the first belt conveyor is communicated with the inlet end of the rotary dryer.
Furthermore, a cooler is arranged on one side of the rotary kiln, the lower end of the chute is communicated with the feeding end of the cooler, a chain bucket conveyor is arranged at the discharging end of the cooler, and the feeding end of the chain bucket conveyor is positioned below the discharging end of the cooler.
Further, flue gas processing apparatus is including desulfurizing tower, cloth bag dust collector and the alkali lye adsorption tower that sets gradually, defeated tobacco pipe says and communicates the entry end of desulfurizing tower, be connected with first flue gas pipeline between the exit end of desulfurizing tower and the entry end of dust collector, be connected with second flue gas pipeline between the entry end of cloth bag dust collector exit end and alkali lye adsorption tower.
According to the second aspect of the embodiment of the invention, the harmless treatment process of the oilfield sludge comprises the following steps,
s1, placing a proper amount of oil field sludge on a first belt conveyor, and conveying the oil field sludge into a rotary dryer through the first belt conveyor;
s2, heating and drying the oil field sludge by using a rotary dryer, and conveying flue gas generated by gas combustion in the secondary combustion chamber into the rotary dryer through a hot air outlet pipeline;
s3, outputting the sludge treated in the rotary dryer to a second belt conveyor, conveying the sludge to the rotary kiln through the second belt conveyor and a large-inclination-angle belt conveyor, and simultaneously starting a circulating fan to input gas generated on the rotary dryer to a secondary combustion chamber through an air inlet channel for full combustion;
s4, burning the oil field sludge conveyed to the rotary kiln in the step S3 in the rotary kiln, and simultaneously inputting waste gas generated by heating the oil field sludge in the rotary kiln into a secondary combustion chamber through a gas transmission pipeline for combustion;
s5, conveying the oil field sludge and formed ash slag processed in the step S4 to a cooling machine through a chute for cooling treatment;
and S6, conveying the cooled ash in the step S5 to a chain bucket conveyor, and conveying the ash to a specified position by the chain bucket conveyor for recovery processing.
Further, the temperature for heating the oil field sludge in the rotary dryer in step S2 is 500-600 ℃.
Further, the temperature for burning the oil field sludge in the rotary kiln in step S4 is higher than 1100 ℃.
The embodiment of the invention has the following advantages: through the structural arrangement of the rotary dryer, the rotary kiln, the secondary combustion chamber, the quench tower, the flue gas treatment device and the like, when the oil field sludge is treated by the rotary dryer, some waste gas in the oil field sludge can be pyrolyzed out, then the oil field sludge is conveyed to the rotary kiln to be incinerated, harmful and toxic substances in the oil field sludge can be calcined to clean up the harmful substances, then the waste gas and the toxic gas in the rotary dryer and the rotary kiln are conveyed to the secondary combustion chamber to be combusted, so that the toxic gas heat exchange waste gas in the flue gas is cleaned up, then the toxic gas heat exchange waste gas is conveyed to the quench tower to be cooled, and finally the toxic gas is conveyed to the flue gas treatment device to be further treated and discharged, the oil field sludge can be rapidly and fully treated by the mode, the oil field sludge is treated more thoroughly, and some harmful gases in the oil field sludge are all treated by calcination, the exhaust gas is relatively clean.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
Fig. 1 is a schematic system configuration diagram of an oilfield sludge innocent treatment system provided in embodiment 1 of the present invention.
In the figure: 1. a rotary dryer; 2. a rotary kiln; 21. a chute; 3. a secondary combustion chamber; 4. a quench tower; 5. a first belt conveyor; 51. a second belt conveyor; 52. a large-inclination belt conveyor; 6. a bucket chain conveyor; 7. a gas pipeline; 8. a hot air outlet duct; 9. a return air duct; 10. a circulating fan; 11. a smoke outlet channel; 12. a smoke conveying pipeline; 13. a cooling machine; 14. a desulfurizing tower; 15. a bag dust collector; 16. an alkali liquor adsorption tower; 17. a first flue gas duct; 18. a second flue gas duct.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A harmless treatment system for oil field sludge is disclosed, as shown in figure 1, comprising a rotary dryer 1, a rotary kiln 2, a secondary combustion chamber 3, a quench tower 4 and a flue gas treatment device, wherein a second belt conveyor 51 and a large-inclination belt conveyor are sequentially arranged between the outlet end of the rotary dryer 1 and the inlet end of the rotary kiln 2, the material discharged from the outlet end of the rotary dryer 1 can fall onto the second belt conveyor 51, in addition, the material on the second belt conveyor 51 can be conveyed to the feed end of the large-inclination belt conveyor 52, the blanking end above the large-inclination belt conveyor 52 is positioned above the inlet end of the rotary kiln 2, and the outlet end of the rotary kiln 2 is fixedly connected with a chute 21; in addition, a first belt conveyor 5 is arranged on one side of the rotary dryer 1, and the discharge end of the first belt conveyor 5 is communicated with the inlet end of the rotary dryer 1.
When the oil field sludge is treated, the oil field sludge can be conveyed into the rotary dryer 1 by the first belt conveyor 5, so that the sludge is heated and dried by the rotary dryer 1 at the heating temperature of 500-; after the drying treatment, the oil field sludge is discharged from the outlet end of the rotary dryer 1 and falls onto a two-belt conveyor, then the oil field sludge can be conveyed into the rotary kiln 2 by using a large-inclination-angle belt conveyor, and further incineration treatment is carried out in the rotary kiln 2, and the incineration temperature is kept at 1100 ℃, so that various toxic and harmful substances in the oil field sludge are oxidized, pyrolyzed and destroyed at high temperature, and the sludge is changed into small-volume, nontoxic and stable ash; the ash formed in the rotary kiln 2 will then be discharged through chute 21.
As shown in fig. 1, a cooler 13 is arranged on one side of a rotary kiln 2, the lower end of a chute 21 is communicated with the feeding end of the cooler 13, a bucket conveyor 6 is arranged at the discharging end of the cooler 13, and the feeding end of the bucket conveyor 6 is positioned below the discharging end of the cooler 13, so that after the rotary kiln 2 burns oil field sludge, waste materials in the oil field sludge can be cooled by the cooler 13, and then the cooled waste materials can fall onto the bucket conveyor 6, so that the waste materials are conveyed to a specified position by the bucket conveyor 6 to be treated.
A gas transmission pipeline 7 is communicated between the rotary kiln 2 and the secondary combustion chamber 3, a return air pipeline 9 is communicated between the rotary dryer 1 and the gas transmission pipeline 7, a circulating fan 10 is arranged on the return air pipeline 9, a smoke outlet channel 11 is communicated between the secondary combustion chamber 3 and the quenching tower 4, and a smoke transmission channel is arranged between the quenching tower 4 and the smoke treatment device.
In the process of drying the oil field sludge in the rotary dryer 1, certain waste gas is generated, the waste gas in the rotary dryer 1 can be conveyed to the secondary combustion chamber 3 by using the return air pipeline 9 for sufficient combustion so as to treat the waste gas, and meanwhile, the waste gas in the rotary dryer is conveniently and quickly conveyed to the secondary combustion chamber 3 by the circulating fan 10; meanwhile, certain harmful gas can be generated when the oil field sludge is incinerated and heated in the rotary kiln 2, and the harmful gas can be conveyed into the secondary combustion chamber 3 through the kiln tail smoke chamber and the gas conveying pipeline 7 for high-temperature calcination so as to eliminate the harmful gas in the smoke. Then the flue gas of the second combustion chamber enters the quenching tower 4 through the flue gas outlet channel 11 for cooling treatment, and then enters the flue gas treatment device through the flue gas conveying channel for carrying out other treatment on the flue gas.
A hot air outlet pipeline 8 provided for the rotary dryer 1 is arranged on the smoke outlet channel 11 of the secondary combustion chamber 3, and the hot air outlet pipeline 8 is communicated to the rotary dryer 1, so that smoke generated by combustion in the secondary combustion chamber 3 is conveyed to the rotary dryer 1 through the hot air outlet pipeline 8, and oil field sludge in the rotary dryer 1 can be heated through the high-temperature smoke, so that the equipment investment and the fuel consumption of a hot blast stove of a system of the rotary dryer 1 are reduced, and certain energy is saved.
In addition, a gas inlet and an air outlet are arranged on the secondary combustion chamber 3, so that the waste gas and other gases filled into the secondary combustion chamber 3 can be fully combusted.
As shown in fig. 1, the flue gas treatment device comprises a desulfurization tower 14, a bag dust collector 15 and an alkali absorption tower 16 which are arranged in sequence, wherein a flue gas transmission pipeline 12 is communicated with an inlet end of the desulfurization tower 14, a first flue gas pipeline 17 is connected between an outlet end of the desulfurization tower 14 and an inlet end of the dust collector, and a second flue gas pipeline 18 is connected between an outlet end of the bag dust collector 15 and an inlet end of the alkali absorption tower 16. After the cooled flue gas enters the desulfurizing tower 14 through the flue gas conveying pipeline 12, the flue gas can be subjected to desulfurization treatment, then the flue gas enters a dust collector to remove dust in the flue gas, and finally the flue gas enters the alkali liquor adsorption tower 16 to be subjected to nitrogen oxide treatment so as to achieve the purpose of discharging clean gas.
Example 2
An oil field sludge harmless treatment process comprises the following steps,
s1, placing a proper amount of oil field sludge on the first belt conveyor, and conveying the oil field sludge into the rotary dryer 1 through the first belt conveyor 5;
s2, heating and drying the oil field sludge by using the rotary dryer 1, and simultaneously conveying flue gas generated by gas combustion in the secondary combustion chamber 3 into the rotary dryer 1 through a hot air outlet pipeline 8;
s3, delivering the sludge treated in the rotary dryer 1 to the second belt conveyor 51, delivering the sludge to the rotary kiln 2 through the second belt conveyor 51 and the large-inclination belt conveyor 52, and simultaneously turning on the circulating fan 10 to deliver the gas generated in the rotary dryer 1 to the secondary combustion chamber 3 through the gas inlet channel for sufficient combustion;
s4, burning the oil field sludge conveyed to the rotary kiln 2 in the step S3 in the rotary kiln 2, and simultaneously inputting waste gas generated by heating the oil field sludge in the rotary kiln 2 into the secondary combustion chamber 3 through a gas transmission pipeline 7 for combustion;
s5, conveying the oil field sludge and formed ash slag processed in the step S4 to a cooling machine 13 through a chute 21 for cooling treatment;
and S6, conveying the cooled ash in the step S5 to the bucket conveyor 6, and conveying the ash to a designated position by the bucket conveyor 6 for recovery processing.
Wherein the temperature for heating the oil field sludge in the rotary dryer 1 in the step S2 is 500-600 ℃, after the temperature in the rotary dryer 1 reaches the temperature, the oil field sludge in the rotary dryer 1 is conveniently dried fully, and in addition, because the oil field sludge is pyrolyzed when the drying temperature exceeds 350 ℃, part of combustible gas and other waste gas are generated during pyrolysis, so that the waste gas is pyrolyzed and conveyed to the secondary combustion chamber 3 for combustion.
In the step S4, the combustion temperature of the oil field sludge in the rotary kiln 2 is higher than 1100 ℃, and when the combustion temperature in the rotary kiln 2 is higher than the temperature, various toxic and harmful substances in the oil field sludge can be sufficiently oxidized and pyrolyzed at high temperature to be destroyed, so that the sludge is changed into small-volume, non-toxic and stable ash, and the harmful substances in the sludge are completely treated.
The invention can pyrolyze some waste gas in the oil field sludge when the oil field sludge is treated in the rotary dryer 1, then calcine harmful and toxic substances when the oil field sludge is conveyed into the rotary kiln 2 for incineration by the structural arrangement of the rotary dryer 1, the rotary kiln 2, the secondary combustion chamber 3 and the quenching tower 4, the waste gas and the toxic gas in the rotary dryer and the rotary kiln 2 are conveyed into the quenching tower 4 for combustion treatment, the toxic gas heat exchange waste gas in the flue gas is cleaned, then the waste gas is conveyed into the quenching tower 4 for cooling treatment, and finally the waste gas is conveyed into the flue gas treatment device for further treatment and discharge, the oil field sludge can be treated quickly and fully by the mode, the oil field sludge is treated thoroughly, meanwhile, some harmful gases are treated by calcination, so that the discharged gas is relatively clean.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (8)
1. The oil field sludge harmless treatment system is characterized in that: including rotary drier, rotary kiln, postcombustion chamber, quench tower and flue gas processing apparatus, second belt conveyor and big inclination belt conveyor have set gradually between rotary drier's the exit end and the entry end of rotary kiln, and the top blanking end of big inclination belt conveyor is in the entry end top of rotary kiln, the exit end department of rotary kiln is provided with the chute, the intercommunication has gas transmission pipeline between rotary kiln and the postcombustion chamber, the intercommunication has the return air pipeline between rotary drier and the gas transmission pipeline, be equipped with circulating fan on the return air pipeline, the intercommunication has the cigarette passageway between postcombustion chamber and the quench tower, be equipped with the defeated tobacco pipe way between the exit end of quench tower and the flue gas processing apparatus.
2. The harmless treatment system for the oilfield sludge as defined in claim 1, wherein: and a hot air outlet pipeline provided for the rotary dryer is arranged on the smoke outlet channel of the secondary combustion chamber, and the hot air outlet pipeline is communicated to the rotary dryer.
3. The harmless treatment system for the oilfield sludge as defined in claim 1, wherein: and a first belt conveyor is arranged on one side of the rotary dryer, and the discharge end of the first belt conveyor is communicated with the inlet end of the rotary dryer.
4. The harmless treatment system for the oilfield sludge as defined in claim 1, wherein: and a cooler is arranged on one side of the rotary kiln, the lower end of the chute is communicated with the feeding end of the cooler, a chain bucket conveyor is arranged at the discharging end of the cooler, and the feeding end of the chain bucket conveyor is positioned below the discharging end of the cooler.
5. The harmless treatment system for the oilfield sludge as defined in claim 1, wherein: the flue gas processing apparatus is including desulfurizing tower, sack dust collector and the alkali lye adsorption tower that sets gradually, defeated tobacco pipe says and communicates the entry end of desulfurizing tower, be connected with first flue gas pipeline between the exit end of desulfurizing tower and the entry end of dust collector, be connected with second flue gas pipeline between the entry end of sack dust collector exit end and alkali lye adsorption tower.
6. An oil field sludge harmless treatment process is characterized in that: comprises the following steps of (a) carrying out,
s1, placing a proper amount of oil field sludge on a first belt conveyor, and conveying the oil field sludge into a rotary dryer through the first belt conveyor;
s2, heating and drying the oil field sludge by using a rotary dryer, and conveying flue gas generated by gas combustion in the secondary combustion chamber into the rotary dryer through a hot air outlet pipeline;
s3, outputting the sludge treated in the rotary dryer to a second belt conveyor, conveying the sludge to the rotary kiln through the second belt conveyor and a large-inclination-angle belt conveyor, and simultaneously starting a circulating fan to input gas generated on the rotary dryer to a secondary combustion chamber through an air inlet channel for full combustion;
s4, burning the oil field sludge conveyed to the rotary kiln in the step S3 in the rotary kiln, and simultaneously inputting waste gas generated by heating the oil field sludge in the rotary kiln into a secondary combustion chamber through a gas transmission pipeline for combustion;
s5, conveying the oil field sludge and formed ash slag processed in the step S4 to a cooling machine through a chute for cooling treatment;
and S6, conveying the cooled ash in the step S5 to a chain bucket conveyor, and conveying the ash to a specified position by the chain bucket conveyor for recovery processing.
7. The harmless treatment process of the oilfield sludge as defined in claim 6, which is characterized in that: the temperature for heating the oil field sludge in the rotary dryer in the step S2 is 500-600 ℃.
8. The harmless treatment process of the oilfield sludge as defined in claim 6, which is characterized in that: the temperature of combustion of the oil field sludge in the rotary kiln in step S4 is above 1100 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910872749.8A CN110606646A (en) | 2019-09-16 | 2019-09-16 | Harmless treatment system and treatment process for oilfield sludge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910872749.8A CN110606646A (en) | 2019-09-16 | 2019-09-16 | Harmless treatment system and treatment process for oilfield sludge |
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| CN110606646A true CN110606646A (en) | 2019-12-24 |
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| CN201910872749.8A Pending CN110606646A (en) | 2019-09-16 | 2019-09-16 | Harmless treatment system and treatment process for oilfield sludge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115477132A (en) * | 2021-06-16 | 2022-12-16 | 上海上电漕泾发电有限公司 | High-moisture-content municipal sludge conveying device for coal-fired unit |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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