CN105363760A - Harmless treatment method for abandoned shields wrapped by oil sludge during downhole operation in oilfield - Google Patents
Harmless treatment method for abandoned shields wrapped by oil sludge during downhole operation in oilfield Download PDFInfo
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- CN105363760A CN105363760A CN201510830708.4A CN201510830708A CN105363760A CN 105363760 A CN105363760 A CN 105363760A CN 201510830708 A CN201510830708 A CN 201510830708A CN 105363760 A CN105363760 A CN 105363760A
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- gas
- downhole operation
- pyrolysis oven
- fender
- greasy filth
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/40—Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
Abstract
The invention relates to a harmless treatment method for abandoned shields wrapped by oil sludge during downhole operation in an oilfield. The problems that the treatment technology which meets environmental requirements and enables solid waste such as impermeable cloth wrapped by oil sludge to reach the standard does not exist in an existing oilfield is mainly solved. The method comprises the following steps that 1, a crushing and sealed feeding system of materials is arranged; 2, micro-negative pressure pyrolysis is carried out on the materials, specifically, the materials are sent into a micro-negative pressure indirect heating rotary pyrolyzing furnace by the crushing and sealed feeding system in the step 1, and the temperature in the rotary pyrolyzing furnace and the pyrolysis time of the rotary pyrolyzing furnace are adjusted and controlled according to material properties; 3, gas and liquid are separated, and liquid phases are recycled; 4, noncondensable gas is purified and reused; 5, flue gas is treated and discharged; and 6, an automatic high-temperature residue discharging system is arranged. According to the harmless treatment method for the abandoned shields wrapped by the oil sludge during downhole operation in the oilfield, fuel oil and combustible gas can be recycled from the abandoned shields wrapped by the oil sludge during downhole operation, and harmless treatment of the abandoned shields and wrapping oil sludge during downhole operation is achieved.
Description
Technical field
The present invention relates to a kind of discarded fender method for innocent treatment in the resource and environment technical field of oil field, fender method for innocent treatment discarded by especially a kind of underground work parcel greasy filth.
Background technology
The operation of field produces down-hole, operation field surrounding enviroment are polluted in order to prevent the solid waste such as greasy filth, mud produced in operation process, the interim native pond that general employing is covered with antiseepage cloth is collected these solid waste and is kept in, the mud, greasy filth etc. of generation after Downhole Construction completes can process at roping to built disposal of oily sludge station, but be wrapped with the fenders such as the antiseepage cloth of greasy filth and can only carry out temporary stacking, there is no the effective treatment technology of 1 cover at present.
The fender being wrapped with greasy filth belongs to dangerous solid waste from the angle of environmental protection requirement, is difficult to degraded, if process is not good at, can give the environment such as air, water, soil of periphery, the even physical and mental health of harm humans.In January, 2015 new environmental law issuing and implementation, propose stricter requirement to the disposal of hazardous solid waste, process and environmental pollution prevention and control etc., the dynamics of punishment is also more severe.Because oil field does not have at present to meet environmental requirement and realizes being wrapped with the technology of the solid waste process up to standard such as greasy filth antiseepage cloth, many underground work tasks are caused to implement, constrain the manufacturing schedule of the unit such as drilling well, oil recovery, seriously have impact on the production in oil field and completing of production capacity index.
Summary of the invention
The invention reside in and overcome the existing oil field existed in background technology and there is no to meet environmental requirement and the problem realizing being wrapped with greasy filth antiseepage cloth solid waste treatment technology up to standard, and provide
oneplant oilfield downhole operation parcel greasy filth and discard fender method for innocent treatment.Fender method for innocent treatment discarded by this oilfield downhole operation parcel greasy filth, can wrap up greasy filth discard fender and reclaim fuel oil, combustible gas from underground work, realizes the harmless treatment that fender and parcel greasy filth are discarded in underground work.
The present invention solves its problem and reaches by following technical scheme: fender method for innocent treatment discarded by this oilfield downhole operation parcel greasy filth, comprises the following steps:
(1), the airtight feeding system of fragmentation of material: first material enters disintegrating machine, and material is broken into 5-10cm, is delivered to the hydraulic feed system rotating pyrolysis oven through conveyer; Directly be connected with rotation pyrolysis oven closed chamber in hydraulic feed system;
(2), the tiny structure Thermal desorption of material: material is sent into tiny structure indirect through the broken airtight feeding system of step (1) and rotated in pyrolysis oven, and according to the character of material, regulation and control rotate pyrolysis in-furnace temperature and pyrolysis time; Under rotating the tiny structure environment that material in pyrolysis oven is 0.02Mpa in vacuum, first in 2h, rise to 200 DEG C by room temperature, between 100 DEG C ~ 200 DEG C, stop 1.5h, now have a large amount of steam to steam; Then 500 DEG C are risen to the heating rate of average 35 DEG C/h ~ 55 DEG C/h by 200 DEG C, accumulative heating-up time 5.5h ~ 8.5h, wherein between 200 DEG C ~ 300 DEG C, stop 1h ~ 2h, 2.5h ~ 3.5h is stopped between 300 DEG C ~ 400 DEG C, 1.0h ~ 5.0h is stopped between 400 DEG C ~ 500 DEG C, this temperature control section produces a large amount of cracking cuts, reclaims after condensation; Finally be down to less than 400 DEG C with the rate of temperature fall of average 50 DEG C/h ~ 60 DEG C/h by 500 DEG C; Residue after pyrolysis is delivered to after the cooling of cooling feed bin through coolelevator and is delivered to packaging system;
(3), gas-liquid separation and liquid phase reclaim: first the steam that material produces after Thermal desorption in rotation pyrolysis oven be separated for the first time through undue drum, the liquid phase separated through point drum is heavy oil, gas phase enters the further condensation of condenser and reclaims, liquid phase through condenser condenses recovery enters oil water separator and carries out water-oil separating, the fuel oil separated enters oil and reclaims storage tank, and the oil-polluted water separated is delivered to the rear re-injection underground of oily waste water treatment station process;
(4), fixed gas purification and reuse: the fixed gas produced after condenser, remove sour gas in fixed gas and dust through waste gas purification apparatus, light through burner as fuel together with natural gas through spark arrester, give and rotate pyrolysis oven thermal source is provided;
(5), fume treatment and discharge: the flue gas that the burning coming from fixed gas and natural gas in combustion chamber produces, first acid gas in flue gas is removed through wet desulfurization dust-removing device, the carbon monoxide in flue gas, nitrogen oxide and flue dust is removed, the final qualified discharge of flue gas finally by absorbent charcoal adsorber.
(6), automatic high temperature slag-tapping system: the residue after pyrolysis, by conveyer of slagging tap, is delivered to cooling feed bin through coolelevator, is delivered to packaging system after cooling.
The present invention can have following beneficial effect compared with above-mentioned background technology: this oilfield downhole operation wraps up greasy filth and discards fender method for innocent treatment, adopt tiny structure indirect revolving burner pyrolytic process, supporting gas-liquid separation and liquid phase recovery system, fixed gas purification and reclaiming system, automatically high temperature slag-tapping system, fume treatment and exhaust system and temperature control, the robot control system(RCS) such as voltage-controlled, achieve the harmless treatment that oilfield downhole operation discards fender and parcel greasy filth, thoroughly eliminate the pollution of oil field solid waste.Adopt present invention process not only in the harmless treatment guaranteeing flue gas, residue realizes solid waste while reaching national corresponding discharge standard, and fuel oil, combustible gas energy can also be reclaimed, produce certain economic benefit.
Accompanying drawing illustrates:
Accompanying drawing 1 is process flow diagram of the present invention.
detailed description of the invention:
Below in conjunction with specific embodiment and accompanying drawing, the invention will be further described:
As shown in Figure 1, oilfield downhole operation is discarded fender and is wrapped up greasy filth method for innocent treatment and contains following processing step:
1, the airtight feeding system of the fragmentation of material: first material enters double-shaft crusher, under the effect of alloy steel cutter, is broken into 5-10cm by material, is delivered to the hydraulic feed system rotating pyrolysis oven through full-automatic enclosed drag conveyor; Hydraulic feed system is directly connected with rotation pyrolysis oven closed chamber, has stopped the situation causing bad sealing because charging aperture is excessive.
2, the tiny structure Thermal desorption of material: material is sent into tiny structure indirect through the airtight feeding system of fragmentation and rotated in pyrolysis oven, and according to the character of material, regulation and control rotate pyrolysis in-furnace temperature and pyrolysis time; Under rotating the tiny structure environment that material in pyrolysis oven is 0.02Mpa in vacuum, first in 2h, rise to 200 DEG C by room temperature, between 100 DEG C ~ 200 DEG C, stop 1.5h, now have a large amount of steam to steam; Then 500 DEG C are risen to the heating rate of average 35 DEG C/h ~ 55 DEG C/h by 200 DEG C, accumulative heating-up time 5.5h ~ 8.5h, wherein between 200 DEG C ~ 300 DEG C, stop 1h ~ 2h, 2.5h ~ 3.5h is stopped between 300 DEG C ~ 400 DEG C, 1.0h ~ 5.0h is stopped between 400 DEG C ~ 500 DEG C, this temperature control section produces a large amount of cracking cuts, reclaims after condensation; Finally be down to less than 400 DEG C with the rate of temperature fall of average 50 DEG C/h ~ 60 DEG C/h by 500 DEG C; Residue after pyrolysis is delivered to after the cooling of cooling feed bin through coolelevator and is delivered to automatic packaging system through conveyer, outward transport after pack packing.
3, gas-liquid separation and liquid phase reclaim: first the steam (comprising steam and pyrolysis cut) that material produces after Thermal desorption in rotation pyrolysis oven be separated for the first time through undue drum, the liquid phase separated through point drum is heavy oil, gas phase enters the further condensation of condenser and reclaims, liquid phase through condenser condenses recovery enters oil water separator and carries out water-oil separating, the fuel oil (wherein gasoline and diesel oil add up to proportion 40% ~ 70%) separated enters oil and reclaims storage tank, oil-polluted water (oil content≤the 1000mg/L separated, suspended solids content≤200mg/L) be delivered to nearby oily waste water treatment station process after re-injection underground.
4, fixed gas purification and reuse: the fixed gas produced after condenser, mainly with C
1~ C
4organic hydrocarbon, dust and sour gas be main, sour gas in waste gas purification apparatus removal fixed gas and most of dust (dust removing effects can reach more than 85%), light through burner as fuel together with natural gas through spark arrester, provide thermal source to rotation pyrolysis oven.
5, fume treatment and discharge: the flue gas produced in combustion chamber mainly comes from the burning of fixed gas and natural gas.First flue gas removes the SO in flue gas through wet desulfurization dust-removing device
2, H
2the sour gas such as S, remove the carbon monoxide in flue gas, nitrogen oxide and flue dust finally by absorbent charcoal adsorber, guarantee the final qualified discharge of flue gas.
6, automatic high temperature slag-tapping system: the residue after pyrolysis, by conveyer of slagging tap, is delivered to cooling feed bin through ring chain bucket coolelevator, is delivered to automatic packaging system after cooling through conveyer, outward transport after pack packing.
7, the tiny structure Thermal desorption of material described in step 2, can reach national corresponding discharge standard in order to ensure residue after material pyrolysis, and rotate pyrolysis oven and add up the reaction time and should be not less than 10h, general control is in 10h ~ 15h.
Tiny structure indirect described in step 2 rotates pyrolysis oven, that rotation pyrolysis oven is placed in combustion chamber, arrange in combustion chamber and organize burner more, burner carries out heat temperature raising as fuel to rotation pyrolysis oven outer wall using the fixed gas of natural gas and recovery, by the heat carrying out spinning pyrolysis oven wall, indirect is carried out to treating material in rotation pyrolysis oven, achieve static heat supply and be dynamically heated, after this indirect heating manner ensure that the completeness of material Thermal desorption, the rate of recovery reclaiming fuel oil and pyrolysis, flue gas, residue reach national corresponding discharge standard.
8, tiny structure indirect described in step 2 rotates pyrolysis oven, rotary speed is adjustable at 0 ~ 1r/min, inside have employed coking scavenge system, adopt double helix scraper to be close to furnace wall to move back and forth, while rotary motion, realize scraper and the running of body of heater different rotating speeds, remove by colloid at the coking initial stage, thoroughly solve furnace wall coking problem, greatly ensure effective utilization of combustion heat energy.
9, described in step 3, point drum and burner are interlocked, can by the temperature of the quantity combusted regulation and control point drum of burner and pressure.Require that the temperature of point drum controls below 150 DEG C, Stress control is at below 0.04Mpa.
10, burner described in step 4 adopts full-automatic control system, can according to rotating in pyrolysis oven burner hearth and the temperature auto-control ignition temperature of point drum, and gas flow modification scope is 16 ~ 150Nm
3/ h.
Embodiment 1:
Be about 1500t underground work parcel greasy filth to Daqing oil field to discard fender and carry out harmless treatment, provide 1 cover 15t/d tiny structure indirect revolving burner pyrolytic process, treatment cycle 3 months.Material hangs grab bucket through row and sends into disintegrating machine, is delivered to the hydraulic feed machine rotating pyrolysis oven after fragmentation through totally-enclosed drag conveyor, and disposable being delivered to by hydraulic feed machine of the material after 15t fragmentation rotates in pyrolysis oven.Starting negative pressure system makes vacuum in rotation pyrolysis oven reach 0.02Mpa, guarantees that rotating pyrolysis oven rotating speed is 0.4r/min, lights 3 groups in 5 groups of burners, makes 3 groups of burner full-load operations, by the temperature in temperature, pressure monitoring system regulation and control stove.After 2h, in-furnace temperature rises to 200 DEG C by 30 DEG C, and the temperature of this time-division drum is 90 DEG C, withdrawing fluid from condensator outlet visor is seen; Light the 4th group of burner, continue to heat up with the heating rate of 50 ~ 55 DEG C/h, make in-furnace temperature rise to 300 DEG C by 200 DEG C, the temperature constant of this time-division drum is at 90 DEG C, and there is a large amount of liquid-phase refluxs period; Continue to heat up with the heating rate of 40 ~ 45 DEG C/h, make in-furnace temperature rise to 400 DEG C by 300 DEG C, the temperature of this time-division drum rises to 150 DEG C by 90 DEG C gradually in 2.5h, is down to 130 DEG C again in 0.5h, period stove interior generation fixed gas is maximum, and liquid-phase reflux amount is maximum; In order to ensure the higher liquid phase rate of recovery and guarantee that in residue, oil content reaches corresponding discharging standards, light the 5th group of burner, continue to heat up with the heating rate of 95 ~ 100 DEG C/h, in-furnace temperature is made to rise to 500 DEG C fast by 400 DEG C, the temperature of this time-division drum is down to 100 DEG C by 130 DEG C gradually, period liquid-phase reflux amount start reduce; Close the 5th group, 4 groups, 3 groups burners successively, with the cooling of the rate of temperature fall of 50 DEG C/h, make in-furnace temperature be down to 400 DEG C by 500 DEG C, the temperature of this time-division drum continues slowly to drop to less than 90 DEG C, period liquid-phase reflux amount reduce until do not have gradually; Close all burners, rotate pyrolysis oven reaction and terminate (accumulative reaction time 10.5h), enter temperature-fall period, when in-furnace temperature is down to less than 300 DEG C, start automatic high temperature slag-tapping system.Hot-engine sludge, through conveyer of slagging tap, is delivered to cooling feed bin by ring chain bucket coolelevator, is delivered to automatic packaging system after cooling through conveyer, pack packing.
When rotating pyrolysis in-furnace temperature and rising to 200 DEG C, start to produce steam and enter condenser through a point drum, the liquid phase that condensation is got off enters oil water separator, carries out water-oil separating, isolated fuel oil overflow is to oil tank, and the water separated is beaten to neighbouring oily waste water treatment station through pump; Enter burner except after dust, sour gas through spark arrester through waste gas purification apparatus through condenser fixed gas out, provide energy to rotation pyrolysis oven as fuel.Along with in-furnace temperature raise the condensation amount of liquid phase of getting off gradually and fixed gas amount increasing, until in-furnace temperature reaches 390 DEG C, liquid measure and tolerance maximum, measure afterwards and reduce gradually.Along with the increase of fixed gas output, reduce the consumption of burner natural gas gradually.The flue gas that combustion chamber combustion fixed gas and natural gas produce to be removed the SO in flue gas through flue suction wet desulfurization dust-removing device by air-introduced machine
2, H
2the sour gas such as S and part flue dust, remove the carbon monoxide in flue gas, nitrogen oxide and flue dust finally by absorbent charcoal adsorber, guarantee the final qualified discharge of flue gas.
1500t underground work discards fender and parcel greasy filth after the process of tiny structure indirect revolving burner pyrolytic process, accumulative reclaims fuel oil 120t, analyzes known through full range, and wherein gasoline proportion is 18.3%, diesel oil accounts for 25.6%; Produce the higher residue 1300t of carbon content, can use further as the raw material producing construction material and adsorbent.
Flue gas after the process of tiny structure indirect revolving burner pyrolytic process and residue are monitored respectively, the requirement of monitoring result flue gas reaches " dangerous waste incineration Environmental capacity standard " (GB18484-2001) corresponding index, residue reaches the requirement of agricultural sludge pollutant catabolic gene standard (GB4284-84) corresponding index.
Embodiment 2:
Daqing oil field is discarded fender to the about 300t underground work parcel greasy filth that operation produces and is carried out harmless treatment, provides 1 cover 10t/d tiny structure indirect revolving burner pyrolytic process, treatment cycle 1 month.Material hangs grab bucket through row and sends into disintegrating machine, is delivered to the hydraulic feed machine rotating pyrolysis oven after fragmentation through totally-enclosed drag conveyor, and disposable being delivered to by hydraulic feed machine of the material after 10t fragmentation rotates in pyrolysis oven.Starting negative pressure system makes vacuum in rotation pyrolysis oven reach 0.02Mpa, guarantees that rotating pyrolysis oven rotating speed is 1r/min, lights 2 groups in 4 groups of burners, makes 2 groups of burner full-load operations, by the temperature in temperature, pressure monitoring system regulation and control stove.After 1.5h, in-furnace temperature rises to 200 DEG C by 30 DEG C, and the temperature of this time-division drum is 90 DEG C, withdrawing fluid from condensator outlet visor is seen; Light the 3rd group of burner, continue to heat up with the heating rate of 80 ~ 85 DEG C/h, make in-furnace temperature rise to 300 DEG C by 200 DEG C, the temperature of this time-division drum is slowly warming up to 125 DEG C by 90 DEG C, and there is a large amount of liquid-phase refluxs period; Continue to heat up with the heating rate of 50 DEG C/h, make in-furnace temperature rise to 400 DEG C by 300 DEG C, the temperature of this time-division drum rises to maintenance 130 DEG C and remains unchanged, and period stove interior generation fixed gas is maximum, and liquid-phase reflux amount is maximum; In order to ensure the higher liquid phase rate of recovery and guarantee that in residue, oil content reaches corresponding discharging standards, light the 4th group of burner, continue to heat up with the heating rate of 95 ~ 100 DEG C/h, make in-furnace temperature rise to 500 DEG C fast by 400 DEG C, the temperature of this time-division drum be still stabilized in 130 DEG C constant; Continue heat supply, maintain in-furnace temperature at about 500 DEG C, after 1h, the temperature of point drum starts slow decline, and in-furnace temperature also starts to decline, and gas phase output and liquid-phase reflux amount start to reduce; After 3.5h, the temperature of point drum drops to less than 90 DEG C, closes all burners, rotates pyrolysis oven reaction and terminates (accumulative reaction time 11.5h), enter temperature-fall period, when in-furnace temperature is down to less than 300 DEG C, start automatic high temperature slag-tapping system.Hot-engine sludge, through conveyer of slagging tap, is delivered to cooling feed bin by ring chain bucket coolelevator, is delivered to automatic packaging system after cooling through conveyer, pack packing.
When rotating pyrolysis in-furnace temperature and rising to 200 DEG C, start to produce steam and enter condenser through a point drum, the liquid phase that condensation is got off enters oil water separator, carries out water-oil separating, isolated fuel oil overflow is to oil tank, and the water separated is beaten to neighbouring oily waste water treatment station through pump; Enter burner except after dust, sour gas through spark arrester through waste gas purification apparatus through condenser fixed gas out, provide energy to rotation pyrolysis oven as fuel.Along with in-furnace temperature raise the condensation amount of liquid phase of getting off gradually and fixed gas amount increasing, until in-furnace temperature reaches 400 DEG C, liquid measure and tolerance maximum, measure afterwards and reduce gradually.Along with the increase of fixed gas output, reduce the consumption of burner natural gas gradually.The flue gas that combustion chamber combustion fixed gas and natural gas produce to be removed the SO in flue gas through flue suction wet desulfurization dust-removing device by air-introduced machine
2, H
2the sour sour gas such as S and part flue dust, remove the carbon monoxide in flue gas, nitrogen oxide and flue dust finally by absorbent charcoal adsorber, guarantee the final qualified discharge of flue gas.
600t underground work discards fender and parcel greasy filth after the process of tiny structure indirect revolving burner pyrolytic process, accumulative reclaims fuel oil 20t, analyzes known through full range, and wherein gasoline proportion is 35%, diesel oil accounts for 35%; Produce the higher residue 480t of carbon content, can use further as the raw material producing construction material and adsorbent.
Flue gas after the process of tiny structure indirect revolving burner pyrolytic process and residue are monitored respectively, the requirement of monitoring result flue gas reaches " dangerous waste incineration Environmental capacity standard " (GB18484-2001) corresponding index, residue reaches the requirement of agricultural sludge pollutant catabolic gene standard (GB4284-84) corresponding index.
Claims (10)
1. a fender method for innocent treatment discarded by oilfield downhole operation parcel greasy filth, it is characterized in that: comprise the following steps:
(1), the airtight feeding system of fragmentation of material: first material enters disintegrating machine, and material is broken into 5-10cm, is delivered to the hydraulic feed system rotating pyrolysis oven through conveyer; Directly be connected with rotation pyrolysis oven closed chamber in hydraulic feed system;
(2), the tiny structure Thermal desorption of material: material is sent into tiny structure indirect through the broken airtight feeding system of step (1) and rotated in pyrolysis oven, and according to material properties, regulation and control rotate pyrolysis in-furnace temperature and pyrolysis time; Under rotating the tiny structure environment that material in pyrolysis oven is 0.02Mpa in vacuum, first in 2h, rise to 200 DEG C by room temperature, between 100 DEG C ~ 200 DEG C, stop 1.5h, now have a large amount of steam to steam; Then 500 DEG C are risen to the heating rate of average 35 DEG C/h ~ 55 DEG C/h by 200 DEG C, accumulative heating-up time 5.5h ~ 8.5h, wherein between 200 DEG C ~ 300 DEG C, stop 1h ~ 2h, 2.5h ~ 3.5h is stopped between 300 DEG C ~ 400 DEG C, 1.0h ~ 5.0h is stopped between 400 DEG C ~ 500 DEG C, this temperature control section produces a large amount of cracking cuts, reclaims after condensation; Finally be down to less than 400 DEG C with the rate of temperature fall of average 50 DEG C/h ~ 60 DEG C/h by 500 DEG C; Residue after pyrolysis is delivered to after the cooling of cooling feed bin through coolelevator and is delivered to packaging system;
(3), gas-liquid separation and liquid phase reclaim: first the steam that material produces after Thermal desorption in rotation pyrolysis oven be separated for the first time through undue drum, the liquid phase separated through point drum is heavy oil, gas phase enters the further condensation of condenser and reclaims, liquid phase through condenser condenses recovery enters oil water separator and carries out water-oil separating, the fuel oil separated enters oil and reclaims storage tank, and the oil-polluted water separated is delivered to the rear re-injection underground of oily waste water treatment station process;
(4), fixed gas purification and reuse: the fixed gas produced after condenser, remove sour gas in fixed gas and dust through waste gas purification apparatus, light through burner as fuel together with natural gas through spark arrester, give and rotate pyrolysis oven thermal source is provided;
(5), fume treatment and discharge: the flue gas that the burning coming from fixed gas and natural gas in combustion chamber produces, first acid gas in flue gas is removed through wet desulfurization dust-removing device, the carbon monoxide in flue gas, nitrogen oxide and flue dust is removed, the final qualified discharge of flue gas finally by absorbent charcoal adsorber;
(6), automatic high temperature slag-tapping system: the residue after pyrolysis, by conveyer of slagging tap, is delivered to cooling feed bin through coolelevator, is delivered to packaging system after cooling.
2. fender method for innocent treatment discarded by a kind of oilfield downhole operation parcel greasy filth according to claim 1, it is characterized in that: rotate pyrolysis oven in described step (2) and add up the reaction time and should control in 10h ~ 15h.
3. fender method for innocent treatment discarded by a kind of oilfield downhole operation parcel greasy filth according to claim 1, it is characterized in that: described step (2) rotates pyrolysis oven and is placed in combustion chamber, arrange in combustion chamber and organize burner more, burner carries out heat temperature raising as fuel to rotation pyrolysis oven outer wall using the fixed gas of natural gas and recovery, carries out indirect by the heat carrying out spinning pyrolysis oven wall to treating material in rotation pyrolysis oven.
4. fender method for innocent treatment discarded by a kind of oilfield downhole operation parcel greasy filth according to claim 1, it is characterized in that: the rotary speed that described step (2) rotates pyrolysis oven is 0 ~ 1r/min, inner coking scavenge system adopts double helix scraper to be close to furnace wall and moves back and forth.
5. fender method for innocent treatment discarded by a kind of oilfield downhole operation parcel greasy filth according to claim 1, it is characterized in that: the described point drum of step (3) and burner are interlocked, the temperature of described point of drum controls below 150 DEG C, and Stress control is at below 0.04Mpa.
6. fender method for innocent treatment discarded by a kind of oilfield downhole operation parcel greasy filth according to claim 1, it is characterized in that: step (4) described burner gas flow modification scope is 16 ~ 150Nm3/h.
7. fender method for innocent treatment discarded by a kind of oilfield downhole operation parcel greasy filth according to claim 3, it is characterized in that: arrange 4-10 group burner in described combustion chamber.
8. fender method for innocent treatment discarded by a kind of oilfield downhole operation parcel greasy filth according to claim 1, it is characterized in that: the fixed gas produced after described step (4) condenser is the organic hydrocarbon of C1 ~ C4, dust and sour gas.
9. fender method for innocent treatment discarded by a kind of oilfield downhole operation parcel greasy filth according to claim 1, it is characterized in that: described disintegrating machine is double-shaft crusher.
10. fender method for innocent treatment discarded by a kind of oilfield downhole operation parcel greasy filth according to claim 1, it is characterized in that: described material is broken into 5-10cm and is delivered to the hydraulic feed system rotating pyrolysis oven through full-automatic enclosed drag conveyor.
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| CN106673388A (en) * | 2016-12-28 | 2017-05-17 | 江苏碧诺环保科技有限公司 | Oil sludge resourceful treatment process |
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| CN109513730B (en) * | 2018-12-29 | 2023-09-26 | 广东蓝新氢能源科技有限公司 | System and method for vacuum pyrolysis of solid organic waste |
| CN109513730A (en) * | 2018-12-29 | 2019-03-26 | 广东蓝新氢能源科技有限公司 | A kind of solid organic castoff vacuum pyrolysis System and method for |
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| CN110586639A (en) * | 2019-10-14 | 2019-12-20 | 森特士兴集团股份有限公司 | Servo energy-saving control system of natural gas soil heating device and control method thereof |
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| CN113339806A (en) * | 2021-05-28 | 2021-09-03 | 西安交通大学 | Medical waste plasma melting assisted pyrolysis treatment method |
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