CN103570104A - Combined drilling wastewater and tail gas treatment device and method - Google Patents
Combined drilling wastewater and tail gas treatment device and method Download PDFInfo
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- CN103570104A CN103570104A CN201210271308.0A CN201210271308A CN103570104A CN 103570104 A CN103570104 A CN 103570104A CN 201210271308 A CN201210271308 A CN 201210271308A CN 103570104 A CN103570104 A CN 103570104A
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Abstract
The invention discloses a combined drilling wastewater and tail gas treatment device which comprises a settling pond, an electrochemical wastewater treatment device, a clean water basin, a clean water pump, a tail gas treatment water inlet valve, a tail gas treatment control device, a tail gas treatment cylinder and a drainage valve which are sequentially connected through a water pipe, wherein a water outlet of the drainage valve is connected with a water inlet of the settling pond. The invention also discloses a combined drilling wastewater and tail gas treatment method which comprises the following steps: treating the wastewater to obtain clean water through the electrochemical wastewater treatment device; introducing the clean water into a water pipe of the tail gas treatment control device; arranging the tail gas treatment control device in a tail gas treatment mode or a water solution evaporation mode, introducing the clean water into the tail gas treatment cylinder, ejecting the clean water for purifying the tail gas and reducing the temperature, introducing the wastewater into the electrochemical wastewater treatment device for recirculation or evaporating the clean water. According to the device and method, the drilling wastewater amount is obviously reduced, and dust emission of well site tail gas is eliminated. Moreover, emission of the drilling wastewater is completely eliminated, and the device has obvious significances of energy conservation and emission reduction.
Description
Technical field
The present invention relates to treatment unit and the treatment process of a kind of drilling waste water and tail gas, relate in particular to a kind of drilling waste water and combined tail gas treatment unit and treatment process.
Background technology
Existing drilling waste water can carry out the degree of depth by chemical treatment and electrochemical process for treating to be processed continuously, no matter but result how, all can not be to the discharge of place, well site, waste water must be transported to appointed place discharges, meet the requirement of existing drilling technology to waste water recycling, must strengthen well site settling tank capacity, strengthened well site expropriation of land amount, when raising the cost, strengthened environmental pollution area.Existing well site power diesel engine unit dust discharge is larger, common vent gas treatment weak effect, cause diesel engine backpressure rising, oil consumption to raise, adopt spray treatment process effective, but large owing to producing wastewater flow rate, caused new problem of environmental pollution, so well site does not adopt vent gas treatment conventionally.
To sum up, existing drilling waste water and tail gas also, without any can simultaneously treated apparatus and method, make the low emission of drilling well industry, low pollution development process be subject to very large restriction, do not meet the megatrend requirement of energy-saving and emission-reduction.
Summary of the invention
Object of the present invention provides a kind of low emission, oligosaprobic drilling waste water and combined tail gas treatment unit and treatment process with regard to being in order to address the above problem.
In order to achieve the above object, the present invention has adopted following technical scheme:
Drilling waste water of the present invention and combined tail gas treatment unit, comprise settling tank, electrochemistry waste disposal plant, clean water basin, fresh water pump, vent gas treatment water intaking valve, control device of tail gas treatment, vent gas treatment cylinder and water discharge valve, the water outlet of described settling tank is connected with the water inlet of described electrochemistry waste disposal plant by waste pipe, the water outlet of described electrochemistry waste disposal plant is connected with the water inlet of described clean water basin by the first clear water pipe, the water outlet of described clean water basin is connected with the water inlet of described fresh water pump by the second clear water pipe, the water outlet of described fresh water pump is connected with the water-in of described control device of tail gas treatment by the 3rd clear water pipe, the water outlet of described exhaust gas processing device is connected with the nozzle of described vent gas treatment cylinder internal upper part by cleaning politics, economics, organization, and ideology water pipe, the water outlet of described vent gas treatment cylinder bottom is connected with the water inlet of described settling tank by water shoot, described vent gas treatment water intaking valve is installed on described the 3rd clear water pipe, described water discharge valve is installed on described water shoot, the gas inlet of described vent gas treatment cylinder bottom is connected with the exhaust port of the tail gas generation device in described drilling well place.
In said system, first sewage carry out purifying treatment through electrochemistry waste disposal plant, then the clear water after purifying introduced to vent gas treatment cylinder, tail gas purified and the processing of lowering the temperature, then waste water is entered to settling tank recycle.In this process, the sewage in drilling well place is recycled, and need not separately get clear water for vent gas treatment; The high temperature of tail gas evaporates clear water, has solved the problem of well site discharge of wastewater.
As preferably, described combined apparatus also comprises landwaste pond, and the feeding mouth in described landwaste pond is connected with the waste outlet of described clean water basin; Further, described combined apparatus also comprises slag liquid pool and oil trap, and the water outlet of described slag liquid pool is all connected with the water inlet of described electrochemistry waste disposal plant by described waste pipe with the water outlet of described oil trap; Further, described combined apparatus also comprises mud tank, mud conservation tank and valve with slurry, the outlet of described mud tank is connected with the entrance of described settling tank, the water inlet of described mud conservation tank is connected with the water outlet of described fresh water pump by the 5th clear water pipe, and described valve with slurry is installed on described the 5th clear water pipe.
Particularly, the tail gas generation device in described drilling well place comprises power diesel engine and/or oil electric engine.
In order to form automatic control system, described vent gas treatment water intaking valve and described water discharge valve are magnetic valve, and the control end of described vent gas treatment water intaking valve is connected with the control output end of described control device of tail gas treatment respectively with the control input end of described water discharge valve.
Drilling waste water of the present invention and combined tail gas treatment process, comprise the following steps:
(1) sewage in described drilling well place is concentrated in introducing electrochemistry waste disposal plant and carried out electrochemical treatment, and treated water is entered to clean water basin, obtain clear water;
(2) clear water in clean water basin is pumped into clear water pipe with fresh water pump, by control device of tail gas treatment, controlled the switch of the vent gas treatment water intaking valve on clear water pipe;
(3) when control device of tail gas treatment is during in vent gas treatment pattern, clear water enters in vent gas treatment cylinder and sprays through nozzle, the water liquid of ejection from top to bottom falls into the bottom of vent gas treatment cylinder, the water that falls into vent gas treatment cylinder bottom enters settling tank through water shoot, then by settling tank, enters electrochemistry waste disposal plant and carry out circular treatment; Meanwhile, the high-temperature tail gas of vent gas treatment cylinder bottom gas inlet rises, and the dust in tail gas dissolves in water or by water to be taken away, and tail gas is cleaned and lowers the temperature, and to evaporate a small amount of moisture be water vapour vapour, and water vapour drains in atmosphere with together with tail gas after purifying; This pattern is applicable to the situation that the water yield in described drilling well place does not exceed standard;
(4) when control device of tail gas treatment is when water liquid evaporates pattern, vent gas treatment water intaking valve is opened, drain shut valve on the water shoot of vent gas treatment cylinder bottom, clear water enters in vent gas treatment cylinder and sprays through nozzle, the water liquid of ejection from top to bottom falls into the bottom of vent gas treatment cylinder, the water that falls into vent gas treatment cylinder bottom cannot be drained, and is gathered in the bottom of vent gas treatment cylinder; Simultaneously, the high-temperature tail gas of vent gas treatment cylinder bottom gas inlet rises, and the dust in tail gas dissolves in water or by water to be taken away, and tail gas is cleaned and lowers the temperature, and to evaporate large quantity of moisture be water vapour vapour owing to fully contacting with water liquid, water vapour drains in atmosphere with together with tail gas after purifying; Under this pattern, be applicable to the situation that the water yield in described drilling well place exceeds standard;
(5) after drilling well finishes, by the method for above-mentioned steps (4), process, until clear water is dryouied, eliminate well site discharge of wastewater.
Particularly, in described step (1), the sewage in described drilling well place is concentrated to the method for introducing electrochemistry waste disposal plant, can adopt settling tank, oil trap and slag liquid pool are merged again by the method for low level communicating pipe is installed, also can adopt the method for not establishing oil trap and slag liquid pool and only establishing settling tank, also can adopt the method that the sewage in settling tank, oil trap and slag liquid pool is pumped into simultaneously to electrochemistry waste disposal plant.
In described step (1), the treatment time of water of electrochemistry waste disposal plant, take and guarantee that clear water in clean water basin meets supply or water is completely standard.
Further, in described step (2), clear water pipe is also sent into clear water in the mud conservation tank in described drilling well place, for slurry by take-off pipe.
Beneficial effect of the present invention is:
By the present invention, the sewage in drilling well place is recycled for vent gas treatment, utilize the high temperature of tail gas that clear water is evaporated simultaneously, need not drain well site waste water, when significantly reducing drilling waste water amount, eliminating the dust discharge of well site tail gas, also eliminate the discharge of well-drilling waste water completely, the low emission of drilling well industry, low pollution are come true, there is significant energy-saving and emission-reduction meaning; The present invention also has advantages of strong operability, equipment reusable edible, is convenient to promote on a large scale, thereby promote whole drilling well industry, in energy-conserving and environment-protective field, deeply develops.
Accompanying drawing explanation
Fig. 1 is one of structural representation of drilling waste water of the present invention and combined tail gas treatment unit;
Fig. 2 be drilling waste water of the present invention and combined tail gas treatment unit structural representation two;
Fig. 3 be drilling waste water of the present invention and combined tail gas treatment unit structural representation three.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further described in detail:
Embodiment 1:
As shown in Figure 1, drilling waste water of the present invention and combined tail gas treatment unit, comprise mud tank 12, settling tank 23, slag liquid pool 16, oil trap 15, electrochemistry waste disposal plant 25, clean water basin 21, landwaste pond 22, fresh water pump 18, vent gas treatment water intaking valve 6, control device of tail gas treatment 5, vent gas treatment cylinder 3, water discharge valve 2, mud conservation tank 11 and valve with slurry 14, the outlet of mud tank 12 is connected with the entrance of settling tank 23, the water outlet of settling tank 23, the water outlet of the water outlet of slag liquid pool 16 and oil trap 15 is all connected with the water inlet of electrochemistry waste disposal plant 25 by waste pipe 24, the water outlet of electrochemistry waste disposal plant 25 is connected with the water inlet of clean water basin 21 by the first clear water pipe 26, the feeding mouth in landwaste pond 22 is connected with the waste outlet of clean water basin 21, the water outlet of clean water basin 21 is connected with the water inlet of fresh water pump 18 by the second clear water pipe 17, the water outlet of fresh water pump 18 is connected with the water-in of control device of tail gas treatment 5 by the 3rd clear water pipe 8, the water outlet of exhaust gas processing device 5 is connected with the nozzle (not shown) of vent gas treatment cylinder 3 internal upper parts by cleaning politics, economics, organization, and ideology water pipe 4, the water outlet of vent gas treatment cylinder 3 bottoms is connected with the water inlet of settling tank 23 by water shoot 7, vent gas treatment water intaking valve 6 is installed on the 3rd clear water pipe 8, water discharge valve 2 is installed on water shoot 7, the gas inlet of vent gas treatment cylinder 3 bottoms is connected with the exhaust port that the tail gas generation device in described drilling well place is power diesel engine 10, the water inlet of mud conservation tank 11 is connected with the water outlet of fresh water pump 18 by the 5th clear water pipe 20, and valve 14 with slurry is installed on the 5th clear water pipe 20, vent gas treatment water intaking valve 6 and water discharge valve 2 are magnetic valve, and the control input end of the control end of vent gas treatment water intaking valve 6 and water discharge valve 2 is connected respectively (this structure is not shown) with the control output end of control device of tail gas treatment 5.
In Fig. 1, also show rig floor 1 and machine room 9, the top of settling tank 23 is also provided with Sewage Level Instrument 13, and the top of clean water basin 21 is also provided with clear water tank gage 19.In said structure, the nozzle in vent gas treatment cylinder 3, vent gas treatment cylinder 3, water discharge valve 2, power diesel engine 10 are three (also can be four), and the epimere of water shoot 7 is divided into three arms (also can be four), and hypomere is combined into a house steward.
Embodiment 2:
As shown in Figure 2, drilling waste water of the present invention and combined tail gas treatment unit, comprise mud tank 12, settling tank 23, slag liquid pool 16, oil trap 15, electrochemistry waste disposal plant 25, clean water basin 21, landwaste pond 22, fresh water pump 18, vent gas treatment water intaking valve 6, control device of tail gas treatment 5, vent gas treatment cylinder 3, water discharge valve 2, mud conservation tank 11 and valve with slurry 14, the outlet of mud tank 12 is connected with the entrance of settling tank 23, the water outlet of settling tank 23, the water outlet of the water outlet of slag liquid pool 16 and oil trap 15 is all connected with the water inlet of electrochemistry waste disposal plant 25 by waste pipe 24, the water outlet of electrochemistry waste disposal plant 25 is connected with the water inlet of clean water basin 21 by the first clear water pipe 26, the feeding mouth in landwaste pond 22 is connected with the waste outlet of clean water basin 21, the water outlet of clean water basin 21 is connected with the water inlet of fresh water pump 18 by the second clear water pipe 17, the water outlet of fresh water pump 18 is connected with the water-in of control device of tail gas treatment 5 by the 3rd clear water pipe 8, the water outlet of exhaust gas processing device 5 is connected with the nozzle (not shown) of vent gas treatment cylinder 3 internal upper parts by cleaning politics, economics, organization, and ideology water pipe 4, the water outlet of vent gas treatment cylinder 3 bottoms is connected with the water inlet of settling tank 23 by water shoot 7, vent gas treatment water intaking valve 6 is installed on the 3rd clear water pipe 8, water discharge valve 2 is installed on water shoot 7, the gas inlet of vent gas treatment cylinder 3 bottoms is connected with the exhaust port that the tail gas generation device in described drilling well place is oil electric engine 29, the water inlet of mud conservation tank 11 is connected with the water outlet of fresh water pump 18 by the 5th clear water pipe 20, and valve 14 with slurry is installed on the 5th clear water pipe 20, vent gas treatment water intaking valve 6 and water discharge valve 2 are magnetic valve, and the control input end of the control end of vent gas treatment water intaking valve 6 and water discharge valve 2 is connected respectively (this structure is not shown) with the control output end of control device of tail gas treatment 5.
In Fig. 2, also show rig floor 1, electric-controlled house 27 and Generators 28, the top of settling tank 23 is also provided with Sewage Level Instrument 13, and the top of clean water basin 21 is also provided with clear water tank gage 19.In said structure, nozzle in vent gas treatment cylinder 3, vent gas treatment cylinder 3, water discharge valve 2, oil electric engine 29 and Generators 28 are four (also can be three), the epimere of water shoot 7 is divided into four arms (also can be three), and hypomere is combined into a house steward.
Embodiment 3:
As shown in Figure 3, drilling waste water of the present invention and combined tail gas treatment unit, comprise mud tank 12, settling tank 23, electrochemistry waste disposal plant 25, clean water basin 21, landwaste pond 22, fresh water pump 18, vent gas treatment water intaking valve 6, control device of tail gas treatment 5, vent gas treatment cylinder 3, water discharge valve 2, mud conservation tank 11 and valve with slurry 14, the outlet of mud tank 12 is connected with the entrance of settling tank 23, the water outlet of settling tank 23 is connected with the water inlet of electrochemistry waste disposal plant 25 by waste pipe 24, the water outlet of electrochemistry waste disposal plant 25 is connected with the water inlet of clean water basin 21 by the first clear water pipe 26, the feeding mouth in landwaste pond 22 is connected with the waste outlet of clean water basin 21, the water outlet of clean water basin 21 is connected with the water inlet of fresh water pump 18 by the second clear water pipe 17, the water outlet of fresh water pump 18 is connected with the water-in of control device of tail gas treatment 5 by the 3rd clear water pipe 8, the water outlet of exhaust gas processing device 5 is connected with the nozzle (not shown) of vent gas treatment cylinder 3 internal upper parts by cleaning politics, economics, organization, and ideology water pipe 4, the water outlet of vent gas treatment cylinder 3 bottoms is connected with the water inlet of settling tank 23 by water shoot 7, vent gas treatment water intaking valve 6 is installed on the 3rd clear water pipe 8, water discharge valve 2 is installed on water shoot 7, the gas inlet of vent gas treatment cylinder 3 bottoms is connected with the exhaust port that the tail gas generation device in described drilling well place is power diesel engine 10, the water inlet of mud conservation tank 11 is connected with the water outlet of fresh water pump 18 by the 5th clear water pipe 20, and valve 14 with slurry is installed on the 5th clear water pipe 20, vent gas treatment water intaking valve 6 and water discharge valve 2 are magnetic valve, and the control input end of the control end of vent gas treatment water intaking valve 6 and water discharge valve 2 is connected respectively (this structure is not shown) with the control output end of control device of tail gas treatment 5.
In Fig. 3, also show rig floor 1 and machine room 9, the top of clean water basin 21 is also provided with clear water tank gage 19.In said structure, the nozzle in vent gas treatment cylinder 3, vent gas treatment cylinder 3, water discharge valve 2, power diesel engine 10 are three (also can be four), and the epimere of water shoot 7 is divided into three arms (also can be four), and hypomere is combined into a house steward.
Above-described embodiment has only been listed the part concrete structure of drilling waste water of the present invention and combined tail gas treatment unit, also has on this basis a lot of unitized constructions, all belongs to the protection category of patent of the present invention, at this, does not enumerate.
Sewage and the vent gas treatment in 7000 meters of machine dimensions drill places of take is below example, and drilling waste water of the present invention and combined tail gas treatment process are specifically described:
As shown in Figure 3, drilling waste water of the present invention and combined tail gas treatment process, comprise the following steps:
(1) retain settling tank 23, cancel oil trap and slag liquid pool, settling tank 23 capacity are 800m3 left and right, and well site sewage reduces capacity 400m3 left and right;
(2) sewage in settling tank 23 is introduced in electrochemistry waste disposal plant 25 and carried out electrochemical treatment, and treated water is entered to clean water basin 21, obtain clear water, separated scum silica frost after processing is drawn in landwaste pond 22, electrochemistry waste disposal plant is high-frequency impulse electrochemistry waste disposal plant, treatment capacity is 5 tons/hour, and the treatment time of water of electrochemistry waste disposal plant 25 be take and guaranteed that clear water in clean water basin 21 meets supply or water is completely standard;
(3) clear water in clean water basin 21 is pumped into the 3rd clear water pipe 8 and the 5th clear water pipe 20 with fresh water pump 18, it is interior with slurry that clear water in the 5th clear water pipe 20 is used for sending into mud conservation tank 11, in emergency circumstances, mud conservation tank still can supply water by overhead water pot from well site, and the clear water in the 3rd clear water pipe 8 enters in control device of tail gas treatment 5 in the situation that vent gas treatment water intaking valve 6 is opened;
(4) when control device of tail gas treatment 5 is during in vent gas treatment pattern, water discharge valve 2 on the water shoot 7 of vent gas treatment water intaking valve 6 and vent gas treatment cylinder 3 bottoms is all opened, clear water enters in vent gas treatment cylinder 3 and sprays through nozzle, the water liquid of ejection from top to bottom falls into the bottom of vent gas treatment cylinder 3, the water that falls into vent gas treatment cylinder 3 bottoms enters settling tank 23 through water shoot 7, then by settling tank 23, enters electrochemistry waste disposal plant 25 and carry out circular treatment; Meanwhile, the high-temperature tail gas of vent gas treatment cylinder 3 bottom gas inlets rises, and the dust in tail gas dissolves in water or by water to be taken away, and tail gas is cleaned and lowers the temperature, and to evaporate a small amount of moisture be water vapour vapour, and water vapour drains in atmosphere with together with tail gas after purifying; This pattern is applicable to the situation that the water yield in described drilling well place does not exceed standard;
(5) when control device of tail gas treatment is when water liquid evaporates pattern, vent gas treatment water intaking valve 6 is opened, water discharge valve 2 on the water shoot 7 of vent gas treatment cylinder 3 bottoms cuts out, clear water enters in vent gas treatment cylinder 3 and sprays through nozzle, the water liquid of ejection from top to bottom falls into the bottom of vent gas treatment cylinder 3, the water that falls into vent gas treatment cylinder 3 bottoms cannot be drained, and is gathered in the bottom of vent gas treatment cylinder 3; Simultaneously, the high-temperature tail gas of vent gas treatment cylinder 3 bottom gas inlets rises, and the dust in tail gas dissolves in water or by water to be taken away, and tail gas is cleaned and lowers the temperature, and to evaporate large quantity of moisture be water vapour vapour owing to fully contacting with water liquid, water vapour drains in atmosphere with together with tail gas after purifying; Under this pattern, be applicable to the situation that the water yield in described drilling well place exceeds standard;
(6) after drilling well finishes, by the method for above-mentioned steps (4), process, until clear water is dryouied, eliminate well site discharge of wastewater.
Claims (10)
1. a drilling waste water and combined tail gas treatment unit, it is characterized in that: comprise settling tank, electrochemistry waste disposal plant, clean water basin, fresh water pump, vent gas treatment water intaking valve, control device of tail gas treatment, vent gas treatment cylinder and water discharge valve, the water outlet of described settling tank is connected with the water inlet of described electrochemistry waste disposal plant by waste pipe, the water outlet of described electrochemistry waste disposal plant is connected with the water inlet of described clean water basin by the first clear water pipe, the water outlet of described clean water basin is connected with the water inlet of described fresh water pump by the second clear water pipe, the water outlet of described fresh water pump is connected with the water-in of described control device of tail gas treatment by the 3rd clear water pipe, the water outlet of described exhaust gas processing device is connected with the nozzle of described vent gas treatment cylinder internal upper part by cleaning politics, economics, organization, and ideology water pipe, the water outlet of described vent gas treatment cylinder bottom is connected with the water inlet of described settling tank by water shoot, described vent gas treatment water intaking valve is installed on described the 3rd clear water pipe, described water discharge valve is installed on described water shoot, the gas inlet of described vent gas treatment cylinder bottom is connected with the exhaust port of the tail gas generation device in described drilling well place.
2. drilling waste water according to claim 1 and combined tail gas treatment unit, is characterized in that: described combined apparatus also comprises landwaste pond, and the feeding mouth in described landwaste pond is connected with the waste outlet of described clean water basin.
3. drilling waste water according to claim 1 and 2 and combined tail gas treatment unit, it is characterized in that: described combined apparatus also comprises slag liquid pool and oil trap, the water outlet of described slag liquid pool is all connected with the water inlet of described electrochemistry waste disposal plant by described waste pipe with the water outlet of described oil trap.
4. drilling waste water according to claim 1 and 2 and combined tail gas treatment unit, it is characterized in that: described combined apparatus also comprises mud tank, mud conservation tank and valve with slurry, the outlet of described mud tank is connected with the entrance of described settling tank, the water inlet of described mud conservation tank is connected with the water outlet of described fresh water pump by the 5th clear water pipe, and described valve with slurry is installed on described the 5th clear water pipe.
5. drilling waste water according to claim 1 and combined tail gas treatment unit, is characterized in that: the tail gas generation device in described drilling well place comprises power diesel engine and/or oil electric engine.
6. drilling waste water according to claim 1 and combined tail gas treatment unit, it is characterized in that: described vent gas treatment water intaking valve and described water discharge valve are magnetic valve, the control end of described vent gas treatment water intaking valve is connected with the control output end of described control device of tail gas treatment respectively with the control input end of described water discharge valve.
7. drilling waste water and a combined tail gas treatment process, is characterized in that: comprise the following steps:
(1) sewage in described drilling well place is concentrated in introducing electrochemistry waste disposal plant and carried out electrochemical treatment, and treated water is entered to clean water basin, obtain clear water;
(2) clear water in clean water basin is pumped into clear water pipe with fresh water pump, by control device of tail gas treatment, controlled the switch of the vent gas treatment water intaking valve on clear water pipe;
(3) when control device of tail gas treatment is during in vent gas treatment pattern, water discharge valve on the water shoot of vent gas treatment water intaking valve and vent gas treatment cylinder bottom is all opened, clear water enters in vent gas treatment cylinder and sprays through nozzle, the water liquid of ejection from top to bottom falls into the bottom of vent gas treatment cylinder, the water that falls into vent gas treatment cylinder bottom enters settling tank through water shoot, then by settling tank, enters electrochemistry waste disposal plant and carry out circular treatment; Meanwhile, the high-temperature tail gas of vent gas treatment cylinder bottom gas inlet rises, and the dust in tail gas dissolves in water or by water to be taken away, and tail gas is cleaned and lowers the temperature, and to evaporate a small amount of moisture be water vapour vapour, and water vapour drains in atmosphere with together with tail gas after purifying; This pattern is applicable to the situation that the water yield in described drilling well place does not exceed standard;
(4) when control device of tail gas treatment is when water liquid evaporates pattern, vent gas treatment water intaking valve is opened, drain shut valve on the water shoot of vent gas treatment cylinder bottom, clear water enters in vent gas treatment cylinder and sprays through nozzle, the water liquid of ejection from top to bottom falls into the bottom of vent gas treatment cylinder, the water that falls into vent gas treatment cylinder bottom cannot be drained, and is gathered in the bottom of vent gas treatment cylinder; Simultaneously, the high-temperature tail gas of vent gas treatment cylinder bottom gas inlet rises, and the dust in tail gas dissolves in water or by water to be taken away, and tail gas is cleaned and lowers the temperature, and to evaporate large quantity of moisture be water vapour vapour owing to fully contacting with water liquid, water vapour drains in atmosphere with together with tail gas after purifying; Under this pattern, be applicable to the situation that the water yield in described drilling well place exceeds standard;
(5) after drilling well finishes, by the method for above-mentioned steps (4), process, until clear water is dryouied, eliminate well site discharge of wastewater.
8. drilling waste water according to claim 7 and combined tail gas treatment process, it is characterized in that: in described step (1), the sewage in described drilling well place is concentrated to the method for introducing electrochemistry waste disposal plant, can adopt settling tank, oil trap and slag liquid pool are merged again by the method for low level communicating pipe is installed, also can adopt the method for not establishing oil trap and slag liquid pool and only establishing settling tank, also can adopt the method that the sewage in settling tank, oil trap and slag liquid pool is pumped into simultaneously to electrochemistry waste disposal plant.
9. drilling waste water according to claim 7 and combined tail gas treatment process, is characterized in that: in described step (1), the treatment time of water of electrochemistry waste disposal plant, take and guarantee that clear water in clean water basin meets supply or water is completely standard.
10. drilling waste water according to claim 7 and combined tail gas treatment process, is characterized in that: in described step (2), clear water pipe is also sent into clear water in the mud conservation tank in described drilling well place, for slurry by take-off pipe.
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| CN201210271308.0A CN103570104A (en) | 2012-08-01 | 2012-08-01 | Combined drilling wastewater and tail gas treatment device and method |
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| CN201210271308.0A CN103570104A (en) | 2012-08-01 | 2012-08-01 | Combined drilling wastewater and tail gas treatment device and method |
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Application publication date: 20140212 |