CN209212185U - A kind of thermal desorption processing unit of oil-based drill cuttings - Google Patents
A kind of thermal desorption processing unit of oil-based drill cuttings Download PDFInfo
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- CN209212185U CN209212185U CN201821671428.9U CN201821671428U CN209212185U CN 209212185 U CN209212185 U CN 209212185U CN 201821671428 U CN201821671428 U CN 201821671428U CN 209212185 U CN209212185 U CN 209212185U
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Abstract
The utility model provides a kind of thermal desorption processing unit of oil-based drill cuttings.The thermal desorption processing unit includes: apparatus for feeding, thermal desorption furnace main body, discharging equipment；Apparatus for feeding is connected to thermal desorption furnace main body, and thermal desorption furnace main body is connected to discharging equipment；Apparatus for feeding includes feed inlet, feeder compartment；The bottom of feeder compartment is provided with double helix apparatus for feeding；Thermal desorption furnace main body includes fixed retort and Double-helix propeller, and fixed retort, Double-helix propeller are externally wrapped with electromagnetic coil.The thermal desorption processing unit of the oil-based drill cuttings of the utility model, using the electromagnetic heating of the flames of anger, suitable for applying in the more demanding oil field not having with fuel supply condition of security level or on offshore drilling platform, safety is higher.
Description
Technical field
The utility model relates to a kind of desorption processing unit of oil-based drill cuttings more particularly to a kind of flames of angers of oil-based drill cuttings
Electromagnetic heating thermal desorption processing unit, belong to petroleum solid waste resource recovery processing technology field.
Background technique
As the unconventional oil and gas exploitation scale such as shale gas is gradually expanded, at the oil base drilling wastes that recovery process generates
Reason is also gradually taken seriously with disposition.Since oil-based drill cuttings contain the chemical agents such as shale clast and a large amount of mineral oil, emulsifier,
Complicated component, belongs to hazardous waste, and processing difficulty is larger.Currently, the main processing technique of oil-based drill cuttings has: drying-centrifuge separation
Technology, room temperature chemistry desorption technology, microbiological treatment technology and thermal desorption technology.Wherein, thermal desorption processing technique has processing
Outstanding advantages of period is short, oil removal efficiency is high, is at home and abroad highly valued, and is generally considered oil-based drill cuttings important process
One of.
Thermal desorption processing technique heats material in thermal desorption furnace, reaches material mainly under anoxic condition
The boiling point of middle volatile materials, so that it be made to evaporate the process of removing from material.Currently, the thermal desorption device being widely used is big
Polygamy covers combustion gas, fuel oil or biomass burner, provides thermal energy by fuel combustion, scene needs mating laying combustion gas, combustion
Oil pipeline or regular transport solid fuel, it is more demanding to construction place fuel supply condition and transportation condition.Due to part oil
Gas field well site or offshore drilling platform belong to the highly sensitive area that prevents fires, and prevent any work with torches device and go up on the stage operation, and
The remote area of most oil gas fields, benefit of having inconvenient traffic, fuel supply facility is not perfect, therefore, by conventional fuel heat supply
Thermal desorption processes cannot be introduced into well site or drilling platforms is carried out the work.
Utility model content
In order to solve the above-mentioned technical problem, it is de- that the purpose of this utility model is to provide a kind of heat of flames of anger oil-based drill cuttings
Attached processing unit.
In order to achieve the above technical purposes, the utility model provides a kind of thermal desorption processing unit of oil-based drill cuttings, should
Thermal desorption processing unit includes:
Apparatus for feeding, thermal desorption furnace main body, discharging equipment；
Wherein, apparatus for feeding is connected to thermal desorption furnace main body, and thermal desorption furnace main body is connected to discharging equipment；
Apparatus for feeding includes feed inlet, feeder compartment；The bottom of feeder compartment is provided with double helix apparatus for feeding；
Thermal desorption furnace main body includes fixed retort and Double-helix propeller, fixes the electromagnetic coil that is externally wrapped with of retort, double
The inner wrap of spiral propeller has electromagnetic coil.
The thermal desorption processing unit of the oil-based drill cuttings of the utility model uses flames of anger electromagnetic heating, is suitable in security level
More demanding and fuel is supplied the oil field that condition does not have or is applied in offshore drilling platform, and safety is higher.
The thermal desorption processing unit of the oil-based drill cuttings of the utility model, electromagnetic heating wind circle number by control coil and twine
Around mode, it can be achieved that being precisely controlled to the temperature of thermal desorption furnace main body difference section, gradient-heated is carried out to material, is realized
In different location to the desorption of moisture in material and different boiling volatile hydrocarbon substance, heat utilization rate is high.
The thermal desorption processing unit of the oil-based drill cuttings of the utility model, using electromagnetic heating, the electricity generated by electromagnetic field
Magnetic vortex, so that furnace wall and pushing spiral are efficient heat generation body, jointly heats material, and material is uniformly heated,
System heat transfer is high-efficient.Since heating surface (area) (HS is big, under conditions of identical heat exchange area, the structure of the thermal desorption furnace is more compact,
Suitable for building up skid portable outfit.
The thermal desorption processing unit of the oil-based drill cuttings of the utility model promotes the fixed type of furnace, double helix using double helix
Structure have self-cleaning function, can effectively avoid single axle helical promote containing large amount of liquid material when occur seize and wall sticking phenomenon, it is right
The adaptability of material liquid holdup is more wide in range, also there is definitely inhibiting effect to slagging.
Detailed description of the invention
Fig. 1 is the structural representation of the thermal desorption processing unit of the oil-based drill cuttings of a specific embodiment of the utility model
Figure.
Fig. 2 is that the cross section structure of the thermal desorption processing unit of the oil-based drill cuttings of a specific embodiment of the utility model shows
It is intended to.
Main Reference symbol description:
1 feed inlet, 2 electromagnetic coil, 3 feeder compartment, 4 double helix apparatus for feeding, 5 first thermocouple, 6 second thermocouple 7
12 thermal desorption gas condenser of the 5th 11 star-shaped discharge valve of the 6th thermocouple of thermocouple 10 of the 4th thermocouple 9 of three thermocouple 8
13 Pneumatic double gate valve door, 14 spiral shaft, 15 Double-helix propeller
Specific embodiment
It is now practical to this in order to which the technical characteristics of the utility model, purpose and beneficial effect are more clearly understood
Novel technical solution carries out following detailed description, but should not be understood as the restriction to the enforceable range of the utility model.
Thermocouple is common temperature element in temperature measuring instrument, it directly measures temperature, and temperature signal is converted
At thermo-electromotive force signal, the temperature of measured medium is converted by electric meter (secondary meter).
Electromagnetic coil is by electrified wire coiled conductor, and surrounding forms variable frequency magnetic field, and spirally-wound reinforces magnetic field,
Highest magnetic field strength is realized with the smallest space.
As shown in Figure 1, at the thermal desorption for providing a kind of oil-based drill cuttings in a specific embodiment of the utility model
Device is managed, which may include:
Apparatus for feeding, thermal desorption furnace main body, discharging equipment；
Wherein, apparatus for feeding is connected to thermal desorption furnace main body, and thermal desorption furnace main body is connected to discharging equipment；
Apparatus for feeding includes feed inlet 1, feeder compartment 3；The bottom of feeder compartment 3 is provided with double helix apparatus for feeding 4；
Thermal desorption main body includes fixed retort and Double-helix propeller 15, and fixed retort is externally wrapped with electromagnetic coil 2, double
The inner wrap of spiral propeller 15 has electromagnetic coil 2.
The desorption processing unit for the oil-based drill cuttings that present embodiment provides, is ensuring material handling capacity and treatment effect
Under the premise of not less than traditional fuel thermal desorption processes, the application field of thermal desorption processes has been expanded, has filled up the technology bright
Fire application is limited and supplies the technological gap that place can not apply without fuel.In addition, unique heating method, so that thermal desorption furnace
Interior temperature be precisely controlled to for may, while improving heat exchange efficiency, treating capacity under the same conditions, thermal desorption furnace size compared with
Traditional fuel heating type thermal desorption furnace reduces 1/4, easily facilitates transport and the application in the oil field for having inconvenient traffic benefit.
Specifically, oil-based drill cuttings enter in the feed inlet 1 of apparatus for feeding by conveyer.As shown in Figure 1, feed inlet 1
Lower part be provided with valve, for controlling the airtightness of whole system.Further, valve is using the valve of this field routine
Can, for example Pneumatic double gate valve door 13 can be used.Oil-based drill cuttings, which are controlled, by Pneumatic double gate valve door 13 enters feeder compartment
3.As shown in Figure 1, apparatus for feeding is arranged in the bottom of feeder compartment 3, the apparatus for feeding used can be double helix apparatus for feeding 4, double
Spiral apparatus for feeding 4 uses frequency control, it is ensured that while feeding smooth, the airtightness of guarantee system.Wherein, frequency control can
To be realized by variable-frequency motor.It should be noted that double helix apparatus for feeding is to have double-stranded apparatus for feeding.
Material enters thermal desorption furnace main body by double helix apparatus for feeding 4, and thermal desorption main body includes fixed retort and double
Spiral propeller 15, as depicted in figs. 1 and 2.The Double-helix propeller 15 is driven by spiral shaft 14, and material overturning is promoted to move
Dynamic as shown in Fig. 2, Double-helix propeller 15 has double-spiral structure, two sets of helical flights are mutually twisted and are staggered, and synchronize reality
Existing material stir-frying and progradation；And two spiral circle center distances are 4/3-5/3 times of radius, it is engaged to strike off on propeller
The material of adherency has self-cleaning function for processing high-viscosity material.Using double-stranded pusher transmission board, double spiral shells
Revolve structure have self-cleaning function, can effectively avoid single axle helical promote containing large amount of liquid material when occur seize and wall sticking phenomenon,
Keep material liquid holdup adaptability more wide in range, also there is definitely inhibiting effect to slagging.In addition, Double-helix propeller 15
Inner wrap has electromagnetic coil 2, allows Double-helix propeller 15 to material radiations heat energy, increases heat exchange area, improves heat
Efficiency.Propulsion rate by adjusting material is 0.1m/min-0.8m/min, and material may be implemented in the control of residing time in furnace
System, it is ensured that the treatment effect of discharging.
As shown in Figure 1, fixed retort is externally wrapped with electromagnetic coil 2.After energization, high-frequency current, which flows through coil, can generate high speed
The alternating magnetic field of variation, can generate the vortex of alternation in metal furnace wall, and vortex keeps the iron atom of container bottom at a high speed and random
It then moves, atom collides with each other, rubs and generates thermal energy, to play the effect of heated material.Electromagnetic heating passes through control
Coil winding circle number and canoe are, it can be achieved that be precisely controlled the temperature of thermal desorption furnace main body difference section, to material
Gradient-heated is carried out, realizes the desorption to the volatile hydrocarbon substance of moisture in material and different boiling, thermal energy in different location
Utilization rate is higher.
Further, thermal desorption furnace main body is divided into three stage structure, as shown in Figure 1, by axis AA and axis BB that heat is de-
Attached furnace main body is divided into low-temperature prewarming section, middle temperature is dried section and elevated temperature desorption section.Thermal desorption furnace main body uses gradient-heated mode, often
Section independent control temperature.It, can be in the low of fixed retort 15 and Double-helix propeller 15 in order to realize accurate, independent control temperature
Thermocouple is respectively set in warm preheating section, middle temperature is dried section and elevated temperature desorption section, than first the 5, second heat of thermocouple as shown in figure 1
Galvanic couple 6, third thermocouple 7, the 4th thermocouple 8, the 5th thermocouple 9, the 6th thermocouple 10.Different temperature control segment length and double helix
Propeller 15 pushes material speed matching, and relevant temperature is arranged in each temperature control segment humidity province, realizes that material removes not in each temperature section
With the purpose of pollutant.
The material handled through thermal desorption furnace main body, into discharging equipment, the top connection thermal desorption air cooling of discharging equipment is solidifying
Device 12 is fixed gas and condensate liquid for condensing and separating the Oil-gas Separation that thermal desorption processing generates.Wherein, the condenser of use can
Think direct spray-type heat exchanger.Outlet temperature is 75 DEG C -95 DEG C after condensing, and the control of the temperature can utmostly realize oil
The condensation of gas, and ensure that the water quality of condensate liquid meets subsequent processing and requires condensate liquid.The condensate liquid isolated uses efficient disk
Formula centrifuge is separated, and the revolution of centrifuge is 5000-12000rpm, and the processing time is 5-20min, under this condition can be real
Existing oil is efficiently separated with water.The bottom of discharging equipment is equipped with discharge valve, for example can be star-shaped discharge valve 11, for controlling heat
The discharge of the residue of processing is desorbed.
The desorption processing unit of oil-based drill cuttings in present embodiment, using electromagnetic heating, the flames of anger, safety compared with
Height, suitable for applying in the more demanding oil field not having with fuel supply condition of security level or in offshore drilling platform.
In another specific embodiment of the utility model, providing above-mentioned thermal desorption processing unit has for oil
The step of when the thermal desorption processing of base drilling cuttings, comprising:
Material is sent into thermal desorption furnace main body, carries out thermal desorption processing；
Material is discharged, thermal desorption oil gas enters water cooling spray column, wherein no after desorption is handled after hot-engine sludge is cooling
Solidifying gas passes through catalytic oxidation treatment, is expelled directly out；Condensate liquid enters oil water separator, and recycling separation oily wastewater is completed to oil
The desorption of base drilling cuttings is handled.
Under the premise of ensuring material handling capacity and treatment effect not less than traditional fuel thermal desorption processes, expand hot de-
The application field of attached technique has filled up the technology in the technology sky that open fire application is limited and can not apply without fuel supply place
It is white.In addition, unique heating method, so that thermal desorption in-furnace temperature is precisely controlled to be possible, while improving heat exchange efficiency,
Treating capacity under the same conditions, the more traditional fuel heating type thermal desorption furnace of thermal desorption furnace size reduces 1/4, easily facilitates fortune
Application defeated and in the oil field for having inconvenient traffic benefit.
Specifically, the oil-based drill cuttings in drilling cuttings reservoir carry out broken sorting by screw feeding machine, and screening proposes big part stone
The sundries such as block, enter the feed hopper of electromagnetism thermal desorption furnace together with from the material of well drilling solid control system, and gas is arranged in feed hopper bottom
Dynamic Double sluice valve, strict control system airtightness.Material enters feeder compartment through double-gate plate valve, and double helix is arranged in feeder compartment bottom
Apparatus for feeding, using frequency control, it is ensured that while feeding smooth, guarantee system airtightness.Material is set by double helix charging
It is standby to enter thermal desorption furnace main body.
When carrying out thermal desorption processing, the propulsion rate of material is 0.1m/min-0.8m/min.Using gradient-heated, every section
Independent control temperature, as shown in Figure 1, thermal desorption furnace main body includes low-temperature prewarming section, middle temperature is dried section and high temperature thermal desorption stage.
Wherein, the heating temperature of low-temperature prewarming section is 80 DEG C -150 DEG C, and the heating temperature of middle temperature is dried section is 150 DEG C -250 DEG C, high temperature
The heating temperature of thermal desorption section is 250 DEG C -500 DEG C.
Material be disposed after through cooling spiral device for transferring, cooling jacket is arranged in flat spin, cools down to discharging, avoids
Re-ignition.Wherein, hot-engine sludge enters cooling load displacing screw, and residue is discharged.The thermal desorption oil gas of discharge is aspirated in tail end blower to be made
Enter cyclone dust collectors with lower, the big partial size dust that removal tail gas is swept along enters back into direct spray-type heat exchanger condensation, separates cold
Lime set and fixed gas.Oil gas outlet temperature after condensing should be 75 DEG C -95 DEG C, and the control of the temperature can utmostly realize oil gas
Condensation, and ensure the water quality of condensate liquid meet subsequent processing require water cooling spray column, inversely contacted with shower water, realize flue gas
Extremely cold cooling, oil gas condensation and separation of solid and liquid.
The fixed gas of spray column discharge is discharged from tower top, and into catalytic oxidation unit, the unit is using electric heating to 250
DEG C -400 DEG C, complete exhaust gas exhaustive oxidation decompose after qualified discharge.
It is static that the condensate liquid that spray column is periodically discharged enters oil water separator, and condensate liquid uses efficient disc centrifuge,
For the revolution of centrifuge in 5000-12000rpm, the processing time is 5-20min, and realization oil is efficiently separated with water, and separation upper layer is cold
Solidifying petroleum-type recycles into sump oil storage tank, and lower layer's sewage is discharged and enters oily waste water treatment unit.
Containing sewage treatment unit, using sewage oil removing process well known to those skilled in the art, including oil separator, air bearing dress
Equal facilities are set, control water outlet petroleum-type concentration is not higher than 300mg/L, and concentration of suspension is not higher than 200mg/L.Sewage treatment unit
The crude oil isolated enters slop tank recycling, and the sewage after oil removing enters air cooling heat exchanger, and air cooling heat exchanger can be used tubular type and change
The indirect contacts heat exchange equipment such as hot device or plate heat exchanger.Sewage temperature is reduced to 40 DEG C or less to enter desorption apparatus after heat exchange
Cooling spiral cools down to desorption treated residue, then enters back into sprayed tank water storage tank, provides shower water for water cooling spray column.
The sludge of sewage treatment unit discharge is sent into the storage hopper of electromagnetism desorption apparatus, re-starts system processing.In order to avoid cooling
Water pollutant accumulation, the sewage of daily outlet about total Water 5-10% are up to standard after handling into place sewage disposal system
Discharge.
Embodiment
It is taken respectively from the oil-based drill cuttings that the different well sites of certain domestic oil gas field three generate and is used as process object, sludge quality is shown in
Table 1 is handled using the desorption processing unit of oil-based drill cuttings shown in FIG. 1, and electromagnetism thermal desorption furnaceman is shown in Table as control parameter
2, residue property that fixed gas catalytic oxidizing equipment running parameter is shown in Table 3, treated is shown in Table 4, externally discharged waste water property and is shown in Table 5, heat
Meet the secondary standard requirement of " atmosphere pollution comprehensive discharge standard " (GB16297-1996) after desorption apparatus vent gas treatment.
1 oil-based drill cuttings property of table
| Name of material | Oil content (%) | Moisture content (%) | Total liquid holdup (%) | Solid content (%) | |
| Embodiment 1 | Oil-based drill cuttings A | 5 | 15 | 20 | 80 |
| Embodiment 2 | Oil-based drill cuttings B | 10 | 5 | 15 | 85 |
| Embodiment 3 | Oil-based drill cuttings C | 15 | 10 | 25 | 75 |
2 electromagnetism thermal desorption processes major parameter of table
| Reaction temperature (DEG C) | Residence time (min) | Operating pressure (Pa) | Oxygen concentration (%) | |
| Embodiment 1 | 320-450 | 20-50 | - 50 to -200 | ≤ 5% |
| Embodiment 2 | 300-480 | 30-60 | - 50 to -200 | ≤ 5% |
| Embodiment 3 | 360-500 | 30-60 | - 50 to -200 | ≤ 5% |
3 fixed gas catalytic oxidizing equipment main working parameters of table
| Reaction temperature (DEG C) | Residence time (min) | Operating pressure (MPa) | |
| Embodiment 1 | 180-250 | 10-60 | 0.03-0.3 |
| Embodiment 2 | 200-400 | 10-60 | 0.03-0.3 |
| Embodiment 3 | 200-450 | 10-60 | 0.03-0.3 |
Residue nature examination result after the processing of table 4
| Oil content (%) | Moisture content (%) | Total liquid holdup (%) | Solid content (%) | |
| Embodiment 1 | 0.3 | 8 | 8.3 | 91.7 |
| Embodiment 2 | 0.5 | 5 | 5.5 | 94.5 |
| Embodiment 3 | 0.8 | 2 | 2.8 | 97.2 |
Externally discharged waste water nature examination result after the processing of table 5
| COD(mg/L) | Petroleum-type (mg/L) | SS(mg/L) | |
| Embodiment 1 | ≤500 | 50-300 | 50-200 |
| Embodiment 2 | ≤600 | 50-300 | 50-200 |
| Embodiment 3 | ≤500 | 50-300 | 50-200 |
The thermal desorption processing unit of above embodiments explanation, the oil-based drill cuttings of the utility model can effectively bore oil base
Bits carry out the volatile materials processing such as removing mineral oil.
Claims (10)
1. a kind of thermal desorption processing unit of oil-based drill cuttings, which is characterized in that the thermal desorption processing unit includes:
Apparatus for feeding, thermal desorption furnace main body, discharging equipment；
Wherein, the apparatus for feeding is connected to thermal desorption furnace main body, and the thermal desorption furnace main body is connected to the discharging equipment；
The apparatus for feeding includes feed inlet, feeder compartment；The bottom of the feeder compartment is provided with double helix apparatus for feeding；
The thermal desorption furnace main body includes that fixed retort and Double-helix propeller, the fixed retort are externally wrapped with electromagnetic coil,
The inner wrap of the Double-helix propeller has electromagnetic coil.
2. thermal desorption processing unit according to claim 1, which is characterized in that the thermal desorption furnace main body includes that low temperature is pre-
Hot arc, middle temperature is dried section and elevated temperature desorption section.
3. thermal desorption processing unit according to claim 2, which is characterized in that the fixed retort low-temperature prewarming section,
Middle temperature is dried section and elevated temperature desorption section are provided with thermocouple.
4. thermal desorption processing unit according to claim 2, which is characterized in that the Double-helix propeller is in low-temperature prewarming
Section, middle temperature is dried section and elevated temperature desorption section are provided with thermocouple.
5. thermal desorption processing unit according to claim 1, which is characterized in that two spiral shells in the Double-helix propeller
The circle center distance of rotation is 4/3-5/3 times of radius.
6. thermal desorption processing unit according to claim 1, which is characterized in that the lower part of the feed inlet is provided with valve
Door.
7. thermal desorption processing unit according to claim 1, which is characterized in that the top connection heat of the discharging equipment is de-
Attached gas condenser.
8. thermal desorption processing unit according to claim 7, which is characterized in that the thermal desorption gas condenser is directly to spray
Leaching formula heat exchanger.
9. thermal desorption processing unit according to claim 1, which is characterized in that the bottom of the discharging equipment is equipped with discharging
Valve.
10. thermal desorption processing unit according to claim 9, which is characterized in that the bottom of the discharging equipment is equipped with star
Type discharge valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821671428.9U CN209212185U (en) | 2018-10-16 | 2018-10-16 | A kind of thermal desorption processing unit of oil-based drill cuttings |
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| CN201821671428.9U CN209212185U (en) | 2018-10-16 | 2018-10-16 | A kind of thermal desorption processing unit of oil-based drill cuttings |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111940455A (en) * | 2020-07-13 | 2020-11-17 | 安徽聚璟环保科技有限公司 | Waste plastic film material pyrolysis equipment |
| CN112604644A (en) * | 2020-12-14 | 2021-04-06 | 江苏磊金环境工程有限公司 | Thermal desorption regeneration tower equipment for saturated active alumina pellets |
-
2018
- 2018-10-16 CN CN201821671428.9U patent/CN209212185U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111940455A (en) * | 2020-07-13 | 2020-11-17 | 安徽聚璟环保科技有限公司 | Waste plastic film material pyrolysis equipment |
| CN112604644A (en) * | 2020-12-14 | 2021-04-06 | 江苏磊金环境工程有限公司 | Thermal desorption regeneration tower equipment for saturated active alumina pellets |
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