CN215712494U - Equipment for treating drilling mud - Google Patents

Abstract

The application provides an equipment for being directed at drilling mud handles relates to environmental protection technology field, thereby solves the technical problem that thereby the drilling mud of present processing needs firing equipment to have the potential safety hazard. The apparatus comprises: a stirring and mixing tank, a vacuum separation device and a filter press; wherein the agitator mixing tank has a first outlet and a second outlet, the vacuum separation device has an inlet, and the filter press has an inlet; and a first outlet of the stirring and mixing tank is communicated with an inlet of the vacuum separation device, and a second outlet of the stirring and mixing tank is communicated with an inlet of the filter press. The apparatus provided herein is for treating drilling mud.

Description

Equipment for treating drilling mud

Technical Field

The application relates to the technical field of environmental protection, in particular to equipment for treating drilling mud.

Background

In the process of oil and gas exploitation, a large amount of oil-containing drilling mud can be generated, and the direct discharge of the oil-containing drilling mud can not only cause harm to the environment, but also cause the oil products in the drilling mud not to be recycled, thereby causing resource waste.

At present, the thermal desorption technology is generally adopted to treat the drilling mud, heat the drilling mud to high temperature, evaporate and separate oil products in the drilling mud, and recycle the oil products. However, since the existing treatment process requires heating equipment, there is a certain safety risk in using the heating equipment at or near the oil and gas extraction site, and there may be a risk of explosion of oil substances.

It is therefore of increasing importance to provide an apparatus which can process drilling mud at ambient temperature.

SUMMERY OF THE UTILITY MODEL

The application provides an equipment for being directed at drilling mud handles can be used for solving the technical problem that thereby there is the potential safety hazard in the present drilling mud that handles needs firing equipment.

An embodiment of the present application provides an apparatus for processing drilling mud, the apparatus comprising: a stirring and mixing tank, a vacuum separation device and a filter press;

wherein the agitator mixing tank has a first outlet and a second outlet, the vacuum separation device has an inlet, and the filter press has an inlet;

and a first outlet of the stirring and mixing tank is communicated with an inlet of the vacuum separation device, and a second outlet of the stirring and mixing tank is communicated with an inlet of the filter press.

Optionally, in one embodiment, the vacuum separation device comprises a membrane separator and a vacuum unit;

the membrane separator is connected with the vacuum unit and is provided with an inlet;

the first outlet of the stirring and mixing tank is communicated with the inlet of the membrane separator.

Optionally, in one embodiment, the apparatus further comprises a mixed liquor storage tank;

the mixed liquor storage tank has an inlet and an outlet;

the first outlet of the stirring and mixing tank is communicated with the inlet of the mixed liquid storage tank, and the outlet of the mixed liquid storage tank is communicated with the inlet of the vacuum separation device.

Optionally, in one embodiment, the apparatus further comprises a treating agent recovery device and an oil storage tank;

the treating agent recovery device is provided with an inlet, the oil product storage tank is provided with an inlet, and the vacuum separation device is also provided with a first outlet and a second outlet;

and a first outlet of the vacuum separation device is communicated with an inlet of the treating agent recovery device, and a second outlet of the vacuum separation device is communicated with an inlet of the oil product storage tank.

Optionally, in one embodiment, the treating agent recovery device comprises a first condenser and a treating agent storage tank;

the first condenser has an inlet and an outlet, the treating agent storage tank has an inlet;

the first outlet of the vacuum separation device is communicated with the inlet of the first condenser, and the outlet of the first condenser is communicated with the inlet of the treating agent storage tank.

Optionally, in one embodiment, the treating agent recovery device further comprises a second condenser;

the second condenser having an inlet and an outlet, the first condenser having a first outlet and a second outlet;

the first outlet of the first condenser is communicated with the inlet of the second condenser, the second outlet of the first condenser is communicated with the inlet of the treating agent storage tank, and the outlet of the second condenser is communicated with the inlet of the treating agent storage tank.

Optionally, in one embodiment, the treating agent recovery device further comprises a third condenser;

the third condenser having an inlet and an outlet;

the inlet of the first condenser and the inlet of the third condenser are both communicated with the first outlet of the vacuum separation device; and the outlet of the first condenser and the outlet of the third condenser are both communicated with the inlet of the treating agent storage tank.

Optionally, in one embodiment, the blender mixing tank further has a third inlet and a third outlet, the apparatus further comprises a first water storage tank;

the first water storage tank having an inlet and an outlet;

and a third outlet of the stirring and mixing tank is communicated with an inlet of the first water storage tank, and an outlet of the first water storage tank is communicated with a third inlet of the stirring and mixing tank.

Optionally, in one embodiment, the apparatus further comprises a sludge disposal tank;

the sludge treatment tank has an inlet and an outlet;

and a second outlet of the stirring and mixing tank is communicated with an inlet of the sludge treatment tank, and an outlet of the sludge treatment tank is communicated with an inlet of the filter press.

Optionally, in one embodiment, the device further comprises a first medicament reservoir and a second medicament reservoir;

the sludge treatment tank is provided with a first inlet and a second inlet, and the stirring and mixing tank is also provided with a second inlet;

the outlet of the first medicament storage tank is communicated with the second inlet of the stirring and mixing tank, the second outlet of the stirring and mixing tank is communicated with the first inlet of the sludge treatment tank, and the outlet of the second medicament storage tank is communicated with the second inlet of the sludge treatment tank.

The beneficial effect that this application brought is as follows:

with the apparatus for processing drilling mud provided by embodiments of the present application, the apparatus comprises: a stirring and mixing tank, a vacuum separation device and a filter press; wherein the agitator mixing tank has a first outlet and a second outlet, the vacuum separation device has an inlet, and the filter press has an inlet; a first outlet of the stirring and mixing tank is communicated with an inlet of the vacuum separation device, and a second outlet of the stirring and mixing tank is communicated with an inlet of the filter press; the equipment does not comprise a heating device, and can treat the drilling mud at normal temperature to remove oil products in the drilling mud, so that the safety of the drilling mud treatment process is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts. In the drawings:

FIG. 1 is a schematic flow diagram of a method for processing drilling mud according to an embodiment of the present disclosure;

FIG. 2 is a schematic flow diagram of another method for processing drilling mud provided by an embodiment of the present application;

FIG. 3 is a schematic flow diagram of yet another method for processing drilling mud provided by an embodiment of the present application;

FIG. 4 is a schematic flow diagram of yet another method for processing drilling mud provided by an embodiment of the present application;

FIG. 5 is a schematic flow diagram of yet another method for processing drilling mud provided by an embodiment of the present application;

FIG. 6 is a schematic diagram of an apparatus for processing drilling mud according to an embodiment of the present disclosure;

FIG. 7 is a schematic diagram of another apparatus for processing drilling mud according to an embodiment of the present disclosure;

FIG. 8 is a schematic structural diagram of yet another apparatus for processing drilling mud provided by an embodiment of the present application;

FIG. 9 is a schematic structural diagram of yet another apparatus for processing drilling mud provided in an embodiment of the present application;

FIG. 10 is a schematic structural diagram of yet another apparatus for processing drilling mud provided in accordance with an embodiment of the present application;

FIG. 11 is a schematic structural diagram of yet another apparatus for processing drilling mud provided in accordance with an embodiment of the present application;

FIG. 12 is a schematic structural diagram of yet another apparatus for processing drilling mud provided in accordance with an embodiment of the present application;

FIG. 13 is a schematic structural diagram of yet another apparatus for processing drilling mud provided in an embodiment of the present application;

FIG. 14 is a schematic structural diagram of yet another apparatus for processing drilling mud provided in an embodiment of the present application;

FIG. 15 is a schematic structural diagram of yet another apparatus for processing drilling mud according to an embodiment of the present application.

Reference numerals:

30-drilling mud treatment equipment; 301-stirring and mixing tank; 302-vacuum separation means; 303, a filter press; 304-mixed liquor storage tank; 305 — treating agent recovery unit; 3051-a first condenser; 3052-treating agent storage tank; 3053-a second condenser; 3054-a third condenser; 306-oil product storage tank; 307 — a first water storage tank; 308, a sludge disposal tank; 309-first agent reservoir; 310 — reservoir for second agent.

40-drilling mud treatment equipment; 401 — a first medicament reservoir; 402-stirring and mixing tank; 403-mixed liquid storage tank; 404-membrane separator; 405-a cold trap; 406-oil storage tank; 407-treating agent storage tank; 408-a first water storage tank; 409-second agent reservoir; 410-sludge disposal tank; 411-a filter press; 412 — second water storage tank.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The features of the terms first and second in the description and in the claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more unless otherwise specified. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

At present, the drilling mud is generally treated by adopting a thermal desorption technology, and the treatment process comprises the following steps: the drilling mud is heated to 500-800 ℃ by using heating equipment, so that oil products in the drilling mud are evaporated and separated from the drilling mud, and the separated oil products are recycled. However, since the drilling mud is treated under heating conditions, the safety of the treatment process is low, and there is a risk that oil substances may explode; meanwhile, the treatment mode has higher requirements on equipment, such as higher temperature and higher pressure, and in addition, the energy consumption in the treatment process is higher.

In view of this, embodiments of the present application provide a treatment agent for treating drilling mud, the treatment agent comprising a viscosity reducing agent, a water purifying agent, hexane, and ethyl acetate; the viscosity reducer, the water purifying agent, the hexane and the ethyl acetate are respectively as follows according to mass percentage: 1 to 3 percent of viscosity reducer, 1 to 3 percent of water purifying agent, 40 to 50 percent of hexane and 40 to 50 percent of ethyl acetate.

The treating agent can separate organic matters such as oil products and the like in the drilling mud under the condition of mixing with the drilling mud, and is dissolved in the treating agent to form mixed liquid comprising the oil products and the treating agent, and the mixed liquid can be continuously treated subsequently to separate the oil products from the mixed liquid, so that the oil products in the drilling mud are recycled. The organic matter may also include calcium stearate, tween and the like.

Viscosity reducing agents the first aspect may be used to reduce the viscosity of the drilling mud, thereby facilitating the separation of oil from the drilling mud; the viscosity reducer of the second aspect can be used for reducing the viscosity of a mixed liquid comprising an oil product and a treating agent, and is convenient for the subsequent separation of the oil product and the treating agent so as to recover the oil product. The viscosity reducer may include an anionic surfactant and/or a nonionic surfactant. Wherein the anionic surfactant comprises at least one of carboxylate, sulfonate and polyoxyethylene fatty sulfate; it is to be understood that when the anionic surfactant includes only one of the carboxylate type, the sulfonate type and the polyoxyethylene fatty sulfate salt, it may still be a mixture, for example, the anionic surfactant may be a mixture composed of two or more of the carboxylate type materials. The nonionic surfactant comprises at least one of block polyether taking amine as an initiator, block polyether taking alcohol as an initiator, alkyl phenolic resin block polyether and phenolic amine aldehyde resin block polyether; it is to be understood that the nonionic surfactant can still be a mixture when it comprises only one of the block polyethers with amines as the initiator, the block polyethers with alcohols as the initiator, the alkylphenol aldehyde resin block polyethers and the phenol amine aldehyde resin block polyethers, for example the nonionic surfactant can be a mixture consisting of two or more block polyethers with amines as the initiator. When the viscosity reducer comprises a combination of multiple drugs, the drugs can be selected according to a synergistic effect, and the occurrence of an antagonistic effect is avoided.

The drilling mud may contain part of water, the water purifying agent can react with impurities in the water to remove the impurities, so that the impurities in the mixed solution are less, and further the purity of oil products separated from the mixed solution in the following process can be improved, wherein the mixed solution is the mixed solution which is formed by dissolving the oil products in the drilling mud in the treating agent and comprises the oil products and the treating agent. The water purifying agent may include at least one of polyaluminum chloride, polyaluminum ferric chloride, aluminum chlorohydrate, polyacrylamide, ferrous sulfate, aluminum sulfate, and polyferric sulfate.

The hexane and the ethyl acetate can dissolve the treating agent and organic matters such as oil products and the like in the drilling mud at normal temperature by utilizing the electric property effect between polar molecules and the non-polar intermolecular transfer effect, so that the organic matters such as the oil products and the like can be separated from the drilling mud quickly and separated. The hexane and the ethyl acetate have the characteristics of low toxicity and low boiling point in the second aspect, and are beneficial to separating the treating agent and the oil product in the subsequent process while improving the operation safety (see the subsequent related description specifically).

It can be understood that the treating agent for treating the drilling mud provided by the embodiment of the application can separate oil products in the drilling mud at normal temperature by utilizing the electrical property effect between polar molecules and the non-polar intermolecular transfer effect, so that the step of separating the oil products at high temperature is avoided, and the operation safety is improved. Moreover, the oil product can be separated at normal temperature, so that the requirement on equipment is not high, the investment cost of the equipment is saved, and the energy consumption is effectively reduced. On the other hand, the oil content in the sludge left after the oil product is separated is low through detection, and therefore, the oil product in the drilling mud can be effectively removed by treating the drilling mud based on the treating agent provided by the embodiment of the application.

Based on the treating agent for treating drilling mud provided by the embodiment of the application, the embodiment of the application also provides a method for treating drilling mud by using the treating agent provided by the embodiment of the application, and the method comprises the following steps as shown in figure 1:

step 101: and mixing and stirring the treating agent and the drilling mud to obtain a first mixed material.

Wherein the mass ratio of the drilling mud to the treating agent can be 1: 0.8-1: 1.2.

During the stirring process, oil in the drilling mud can be separated out and dissolved in the treating agent at normal temperature. The stirring time period can be set according to actual needs, for example, the stirring time period can be 1 hour. The rotational speed of the stirrer for stirring the treatment agent with the drilling mud may also be set to the actual requirement, for example at 60 r/min.

Step 102: and standing for a first preset time after stirring to obtain a first mixed solution and first sludge.

And allowing the first mixed material to stand for a first preset time after stirring so as to allow the first mixed material to stand for layering. In the standing process, due to density difference, the first mixed liquid containing the oil product and the treating agent floats on the upper layer, and the first sludge without the oil product is positioned on the lower layer. The first preset time period may be set according to actual needs, for example, the first preset time period is 2 hours.

Because the water purifying agent contained in the treating agent reacts with impurities to remove the impurities, the impurities are generally removed through flocculation reaction with the impurities, namely the water purifying agent reacts with the impurities to generate flocculation precipitation, then the flocculation precipitation can be precipitated in the process of standing and layering to become a part of lower-layer sludge, and then the impurities in the first mixed liquid on the upper layer are less, so that the influence of the impurities on the subsequent oil separation treatment process can be effectively avoided, and the purity of the subsequent oil separated from the mixed liquid can be improved.

It can be understood that the drilling mud treatment method provided by the embodiment of the application can separate oil products in the drilling mud at normal temperature, so that the step of separating the oil products at high temperature is avoided, and the operation safety is improved. Moreover, the oil product can be separated at normal temperature, so that the requirement on equipment is not high, the investment cost of the equipment is saved, and the energy consumption is effectively reduced. On the other hand, the oil content in the sludge left after the oil product is separated is low through detection, and therefore, the oil product in the drilling mud can be effectively removed by treating the drilling mud based on the treating agent provided by the embodiment of the application.

In order to further recover the oil product, in an embodiment, after the obtaining the first mixed liquid, as shown in fig. 2, the method further includes the step 103: and (3) separating the oil product and the treating agent in the first mixed solution under the vacuum condition, and respectively recovering the oil product and the treating agent obtained by separation.

The treating agent provided by the embodiment of the application mainly comprises the hexane with a low boiling point and the ethyl acetate, so that the treating agent has a low boiling point and is easy to boil and gasify under a vacuum condition; the oil product in the first mixed liquid is generally heavy oil components with higher boiling point, is not easy to boil and gasify under the vacuum condition, and still keeps the liquid phase state, so that the oil product in the first mixed liquid can be separated from the treating agent based on the principle.

The vacuum condition may be a condition that the vacuum pressure is-0.09 Mpa, and under the vacuum condition, the boiling point of the treating agent provided in the embodiment of the present application is below 10 ℃ and the boiling point of the oil product is 70 ℃ to 80 ℃, then after the normal temperature first mixed solution is transferred to the vacuum condition, the oil product and the treating agent in the first mixed solution are separated under the vacuum condition, which specifically includes: the temperature of the treating agent in the first mixed solution is higher than the boiling point of the treating agent, so that the treating agent is gasified into gas, the temperature of the oil product in the first mixed solution is lower than the boiling point of the oil product and still keeps liquid, and the oil product and the treating agent in the first mixed solution are separated by gas-liquid two-phase separation.

Further, the separated oil product and the treating agent are respectively recovered, specifically, the gas obtained by gasifying the treating agent is led out from a gas outlet of the device providing the vacuum condition for recovery, and the liquid oil product is led out from a second outlet of the device providing the vacuum condition for recovery.

It can be understood that, through the above scheme, according to the great difference of the boiling point of the treating agent and the oil under the vacuum condition, the oil can be separated from the treating agent, and then the oil and the treating agent can be respectively recovered, so that the recycling of the oil and the treating agent can be realized, the step of separating the oil at high temperature can be avoided, and the operation safety is improved.

In practical application, after the first mixed material is placed still and layered, the upper layer is the first mixed liquid containing the oil product and the treating agent, and the lower layer is the sludge without the oil product, and for convenience of description, the sludge is called as first sludge. To facilitate subsequent utilization of the first sludge, in one embodiment, as shown in fig. 3, the method for processing drilling mud provided by the embodiment of the present application further includes step 104: and conveying the first sludge to a filter press for treatment.

In the step 104, the first sludge is conveyed to a filter press for processing, and in specific implementation, the upper layer of the first mixed liquid is firstly led out and transferred to a device providing a vacuum condition, and then the lower layer of the first sludge is led out and conveyed to the filter press for processing. The first sludge is conveyed to a filter press to be processed, and the first sludge can be dehydrated, so that the reduction processing of the first sludge is realized. The filter press may be a plate and frame filter press.

It can be understood that, through above-mentioned scheme, carry first mud sediment to the pressure filter and handle, can realize the minimizing of first mud sediment and handle, and then be convenient for transport and follow-up resource utilization first mud sediment.

Considering that part of the oil remains in the lower first sludge and part of the treating agent is mixed, in order to further achieve the removal of the part of the oil, in one embodiment, as shown in fig. 4, step 104 is to convey the first sludge to a filter press for treatment, specifically including:

step 1041, adding water into the first sludge, mixing and stirring to obtain a second mixed material, and standing for a second preset time after stirring to obtain a second sludge.

In the specific implementation of step 1041, the upper layer of the first mixed liquid may be first led out and transferred to a device providing a vacuum condition, and then the lower layer of the first sludge is not led out, and water is directly added to the first sludge.

And adding water into the first sludge for mixing and stirring, and washing the first sludge again to ensure that oil products remained in the first sludge can be continuously dissolved in the treating agent remained in the first sludge at normal temperature. The stirring time period can be set according to actual needs, for example, stirring for 1 hour.

And after standing for a second preset time, layering the second mixed material, wherein the upper layer is a second mixed liquid containing the oil product and the treating agent, the middle layer is a water layer, the lower layer is second sludge, and the second sludge is less in residual oil product and treating agent compared with the first sludge. Through detection, the oil content in the second sludge is less than or equal to 1%, and therefore, after the treatment in the step 1041, oil products in the sludge can be further effectively removed. The second preset time period may be set according to actual needs, for example, 2 hours.

And 1042, conveying the second sludge to a filter press for treatment.

And 1042, conveying the second sludge to a filter press for processing, wherein in specific implementation, the second mixed liquid at the upper layer is firstly led out, the water at the middle layer is led out, and then the second sludge at the lower layer is led out and conveyed to the filter press for processing. Through detection, the oil content in the second sludge after the treatment in the step 1042 is less than or equal to 0.3 percent, and thus, oil products in the sludge are further removed. In addition, the second mixed solution can be further transferred to a vacuum condition to realize the recovery of the oil product and the treating agent, which can be referred to the treatment process of the first mixed solution and is not described herein again. The water in the middle layer can be recycled after being discharged, and can be used for washing the first sludge generated in the next batch, for example.

It can be understood that, by the above scheme, water is added into the first sludge for washing, so that the oil product remaining in the first sludge can be continuously dissolved in the treating agent remaining in the first sludge, and the oil product and the treating agent remaining in the first sludge can be further removed.

In order to further reduce the environmental impact of the discharged sludge and improve the effect of the reduction treatment, in one embodiment, after obtaining the second sludge in step 1041 and before delivering the second sludge to the filter press for treatment in step 1042, the drilling mud treatment method provided in the embodiment of the present application further includes: and adding an oxidant and a flocculating agent into the second sludge.

Wherein, the oxidant can be used for killing various biological germs in the second sludge, thereby avoiding the pollution to the environment after the sludge is discharged. The flocculating agent can enable substances in the second sludge to be more aggregated, and the second sludge is favorably dewatered by the filter press.

By adopting the scheme, the oxidizing agent and the flocculating agent are added into the second sludge, so that the environment can be prevented from being polluted after the sludge is discharged, and meanwhile, the reduction treatment effect can be improved.

Based on the method for treating drilling mud provided by the above embodiments of the present application, embodiments of the present application also provide a more specific method for treating drilling mud, it should be understood that the method is merely an example and does not represent a limitation on the method for treating drilling mud provided by the embodiments of the present application, as shown in fig. 5, the method comprising:

step 201, mixing and stirring the treating agent and the drilling mud to obtain a first mixed material.

The treating agent is used for treating the drilling mud provided by the embodiment of the application. The mass ratio of the drilling mud to the treating agent is 1: 0.8-1: 1.2. During the stirring process, oil in the drilling mud can be separated out and dissolved in the treating agent at normal temperature. The stirring time was 1 hour and the rotational speed of the stirrer stirring the treatment agent with the drilling mud was 60 r/min.

Step 202, standing for a first preset time after stirring to obtain a first mixed liquid and first sludge.

In the standing process, due to density difference, the first mixed liquid containing the oil product and the treating agent floats on the upper layer, and the first sludge without the oil product is positioned on the lower layer.

Step 203, separating the oil product and the treating agent in the first mixed solution under vacuum condition, and respectively recovering the oil product and the treating agent obtained by separation.

Wherein, the vacuum condition is that the vacuum pressure is-0.09 Mpa, and under the vacuum condition, the boiling point of the treating agent provided by the embodiment of the application is below 10 ℃, and the boiling point of the oil product is 70-80 ℃. After the normal-temperature first mixed solution is transferred to the vacuum condition, the treating agent in the first mixed solution is gasified into gas, and the oil product in the first mixed solution still keeps liquid.

Further, the gas obtained by gasifying the treating agent is led out from the gas outlet of the device providing the vacuum condition, and the liquid oil product is led out from the second outlet of the device providing the vacuum condition.

And 204, adding water into the first sludge, mixing and stirring to obtain a second mixed material, and standing for a second preset time after stirring to obtain a second mixed solution and second sludge.

Wherein, the first mixed liquid at the upper layer is firstly led out and transferred to a device providing vacuum condition, and then water is added into the first sludge. During the stirring process, the oil product remaining in the first sludge is continuously dissolved in the treating agent remaining in the first sludge.

And after standing, layering the second mixed material, wherein the upper layer is a second mixed solution containing the oil and the treating agent, the middle layer is a water layer, and the lower layer is second sludge.

And step 205, separating the oil product and the treating agent in the second mixed solution under a vacuum condition, and respectively recovering the oil product and the treating agent obtained by separation.

And (3) leading out the second mixed liquid on the upper layer, transferring the second mixed liquid to a vacuum condition, and recycling the oil product and the treating agent. And leading out the water in the middle layer for recycling.

Step 206, adding an oxidizing agent and a flocculating agent to the second sludge.

And the oxidizing agent and the flocculating agent are added into the second sludge to kill various biological germs in the second sludge, so that the environment is prevented from being polluted after the second sludge is discharged, substances in the second sludge are more gathered, and the reduction treatment is facilitated.

And step 207, conveying the second sludge to a filter press for treatment.

The second sludge is conveyed to the filter press to be processed, the second sludge can be dehydrated, the reduction processing of the first sludge is realized, and the subsequent transportation and the resource utilization are facilitated.

It can be understood that the drilling mud treatment method provided by the embodiment of the application can separate oil products in the drilling mud at normal temperature, so that the step of separating the oil products at high temperature is avoided, and the operation safety is improved. Moreover, the oil product can be separated at normal temperature, so that the requirement on equipment is not high, the investment cost of the equipment is saved, and the energy consumption is effectively reduced. On the other hand, the oil content in the sludge left after the oil product is separated is low through detection, and therefore, the oil product in the drilling mud can be effectively removed by treating the drilling mud based on the treating agent provided by the embodiment of the application.

As described in the background of the present application, thermal desorption techniques are currently commonly used to process drilling mud, and heating is required during the process, and therefore equipment for processing drilling mud using thermal desorption techniques also includes heating equipment. However, there are certain safety concerns with the use of heating equipment at or near oil and gas production sites.

In view of the above, the present application also provides an apparatus 30 for treating drilling mud using the treating agent provided by the present application, wherein the apparatus 30 can treat drilling mud under normal temperature conditions. As shown in fig. 6, the drilling mud treatment apparatus 30 includes: a stirring and mixing tank 301, a vacuum separation device 302 and a filter press 303; the agitation mixing tank 301 has a first outlet and a second outlet, the vacuum separation apparatus 302 has an inlet, and the filter press 303 has an inlet; a first outlet of the agitation mixing tank 301 is communicated with an inlet of the vacuum separation device 302, and a second outlet of the agitation mixing tank 301 is communicated with an inlet of the filter press 303.

Wherein the agitator mix tank 301 may also have a first inlet that may be used to input drilling mud a to the agitator mix tank 301 and a second inlet that may be used to input treatment agent B to the agitator mix tank 301. The agitator mix tank 301 may be used to agitate and mix the incoming drilling mud and treatment agent and may provide a space for the mixed material to rest. During the stirring process, the oil in the drilling mud is separated and dissolved in the treating agent, during the standing process, due to the density difference, the first mixed liquid containing the oil and the treating agent floats on the upper layer, and the first sludge without the oil is positioned on the lower layer.

The first outlet of the stirring and mixing tank 301 may be used to lead out the upper layer of the first mixed liquid and convey the first mixed liquid to the vacuum separation device 302. A second outlet of the agitator mixing tank 301 may be used to conduct the lower first sludge out to the filter press 303.

An observation sight glass can be further arranged on the stirring and mixing tank 301, so that an operator can observe the stirring state of the materials and the standing and layering conditions conveniently. Further, the agitation mixing tank 301 may be further provided with a gas release valve to release the light petroleum gas components, thereby preventing the light petroleum gas components from continuously accumulating in the agitation mixing tank 301 to reach the explosion limit.

A floating oil receiver consisting of an interface instrument and a telescopic pipeline can be arranged in the stirring and mixing tank 301, and the lower-layer sludge can be prevented from being conveyed to the vacuum separation device 302 based on the floating oil receiver. The interface instrument floats on the surface of the mixed liquid, when the interface instrument detects that the interface instrument is the interface of air and the mixed liquid, the interface instrument can continuously convey the materials to the vacuum separation device 302, and the conveyed materials are the mixed liquid; when the interface instrument detects that the interface is an oil-water interface (the water interface is the interface of the lower layer sludge), the material conveying to the vacuum separation device 302 can be stopped, so that the lower layer sludge can be prevented from being conveyed to the vacuum separation device 302.

The vacuum separation device 302 may be used to provide a vacuum environment for the first mixed liquor. Under the vacuum condition, the temperature of the treating agent in the first mixed solution is higher than the boiling point of the treating agent, so that the treating agent is gasified into gas, the temperature of the oil product in the first mixed solution is lower than the boiling point of the oil product, the oil product still keeps in a liquid state, and the treating agent is separated from the oil product.

To improve the separation effect of the treating agent and the oil product, in one embodiment, the vacuum separation device 302 comprises a membrane separator and a vacuum unit, the membrane separator is connected with the vacuum unit, the membrane separator has an inlet, and the first outlet of the stirring mixing tank 301 is communicated with the inlet of the membrane separator. The vacuum unit is used for providing a vacuum environment for the membrane separator, the rotary distributor is arranged in the membrane separator, and after the first mixed liquid enters the membrane separator, the first mixed liquid is dispersed by the rotary distributor to form a continuous and uniform liquid film, so that the treating agent with a low boiling point can be quickly gasified and changed into gas, and is quickly separated from oil. The membrane separator is also provided with a speed reducer and a rotor, the rotor is connected with the rotary distributing device, the speed reducer provides power for the rotor, and then the rotor rotates to drive the rotary distributing device to rotate.

In case the vacuum separation device 302 comprises a membrane separator and a vacuum aggregate, the apparatus 30 for treating drilling mud provided by the embodiments of the present application may further comprise a filter through which the first outlet of the blender mixing tank 301 communicates with the inlet of the membrane separator. The filter can be used for screening out large-particle impurities in mixed liquid, so that coking and blockage of the large-particle impurities in the membrane separator can be avoided.

The filter press 303 may be configured to perform filter pressing on the first sludge to reduce the sludge.

It can be understood that, according to the device 30 for treating drilling mud provided by the embodiment of the application, the device 30 does not comprise a heating device, and drilling mud can be treated at normal temperature to remove oil products in the drilling mud, so that the safety of the drilling mud treatment process is improved. On the other hand, the equipment 30 does not include a heating device, so that the investment cost of the equipment is reduced.

In order to ensure the continuity of the first mixed liquor treatment process, in one embodiment, the apparatus 30 for treating drilling mud provided by the embodiment of the present application further includes a mixed liquor storage tank 304, as shown in fig. 7, the mixed liquor storage tank 304 has an inlet and an outlet, the first outlet of the stirring mixing tank 301 is communicated with the inlet of the mixed liquor storage tank 304, and the outlet of the mixed liquor storage tank 304 is communicated with the inlet of the vacuum separation device 302.

The mixed solution tank 304 may be used to temporarily store the first mixed solution (or the second mixed solution).

Because the mode that the stirring and mixing tank 301 handled drilling mud belongs to the batch-type mode of handling, if directly be connected stirring and mixing tank 301 with vacuum separation device 302, can not guarantee that first mixed liquid continuously inputs in vacuum separation device 302, and then lead to the interrupt of first mixed liquid processing technology. By arranging the mixed liquid storage tank 304, after a certain amount of first mixed liquid is temporarily stored in the mixed liquid storage tank 304, the first mixed liquid is introduced into the vacuum separation device 302, and the mixed liquid storage tank 304 always has a certain amount of first mixed liquid, so that the continuity of the first mixed liquid treatment process can be ensured.

An observation sight glass and a liquid level meter can be further arranged on the mixed liquid storage tank 304, so that an operator can observe the condition of the residual materials conveniently. Further, the mixed liquid storage tank 304 may be further provided with a gas release valve to release the light petroleum gas components, thereby preventing the light petroleum gas components from continuously accumulating in the mixed liquid storage tank 304 to reach the explosion limit.

It can be understood that, by the above-mentioned solution, the mixed liquor storage tank 304 is arranged between the stirring mixing tank 301 and the vacuum separation device 302 for temporarily storing the first mixed liquor, so as to ensure the continuity of the first mixed liquor treatment process.

To further achieve the recycling of the treating agent and the oil, in one embodiment, the apparatus 30 for treating drilling mud provided in the embodiment of the present application further includes a treating agent recycling device 305 and an oil storage tank 306, the treating agent recycling device 305 has an inlet, the oil storage tank 306 has an inlet, and the vacuum separation device 302 has a first outlet and a second outlet; the first outlet of the vacuum separation device 302 is communicated with the inlet of the treating agent recovery device 305, and the second outlet of the vacuum separation device 302 is communicated with the inlet of the oil product storage tank 306, as shown in fig. 8.

The first outlet of the vacuum separation device 302 may be used to discharge the gasified treating agent, and the second outlet of the vacuum separation device 302 may be used to discharge the oil product remaining after the treating agent is separated.

The treating agent recovery device 305 may be used to recover the treating agent after gasification. The oil storage tank 306 can be used for recovering and storing the oil from which the treating agent is separated in the vacuum separation device 302. An observation sight glass and an air release valve can be further arranged on the oil product storage tank 306, so that an operator can observe conveniently, and light petroleum gas components are discharged, and the light petroleum gas components are prevented from being continuously accumulated to reach the explosion limit.

It can be understood that, by adopting the above scheme, the treating agent recycling device 305 and the oil product storage tank 306 are arranged and respectively communicated with the first outlet and the second outlet of the vacuum separation device 302, so that the treating agent and the oil product can be respectively recycled, and the subsequent utilization is facilitated.

In order to achieve rapid recovery of the treating agent, in one embodiment, as shown in fig. 9, the treating agent recovering device 305 includes a first condenser 3051 and a treating agent storage tank 3052, the first condenser 3051 has an inlet and an outlet, the treating agent storage tank 3052 has an inlet, the first outlet of the vacuum separation device 302 communicates with the inlet of the first condenser 3051, and the outlet of the first condenser 3051 communicates with the inlet of the treating agent storage tank 3052.

The first condenser 3051 may be used to condense the gasified treatment agent to obtain a liquid treatment agent. The treatment agent reservoir 3052 may be used to collect and store liquid treatment agent for subsequent recycling, such as for treatment of drilling mud. The treatment agent collected from treatment agent storage tank 3052 is typically lost and may be supplemented with a quantity of viscosity reducing agent, water purification agent, hexane, and ethyl acetate prior to recycling the treatment agent for treatment of the drilling mud. An observation sight glass and an air release valve can be further arranged on the treating agent storage tank 3052, so that an operator can observe conveniently, light petroleum gas components can be discharged conveniently, and the light petroleum gas components are prevented from being continuously accumulated to reach the explosion limit.

The first condenser 3051 may specifically include a cold trap and a refrigerator, which are connected, a first outlet of the vacuum separation device 302 is communicated with an inlet of the cold trap, an outlet of the cold trap is communicated with an inlet of the treating agent storage tank 3052, and the refrigerator may provide a cold source for the cold trap. The cold trap may be further connected to a vacuum unit, and the temperature in the cold trap may be as low as-40 deg.c to allow instantaneous condensation of the treating agent gas.

It can be understood that, by the above scheme, the treating agent recycling device 305 comprises the first condenser 3051 and the treating agent storage tank 3052, and the treating agent is recycled by condensation, so that the treating agent can be rapidly recycled, and the recycling efficiency is improved.

In practical applications, if the gas amount obtained by vaporizing the treating agent in the vacuum separation apparatus 302 is large, the gas may be input into the first condenser 3051, which may cause poor condensation effect, and thus affect the recovery efficiency of the treating agent. Therefore, in one embodiment, as shown in fig. 10, the treating agent recovering device 305 further includes a second condenser 3053, the second condenser 3053 has an inlet and an outlet, the first condenser 3051 has a first outlet and a second outlet, the first outlet of the first condenser 3051 communicates with the inlet of the second condenser 3053, the second outlet of the first condenser 3051 communicates with the inlet of the treating agent storage tank 3052, and the outlet of the second condenser 3053 communicates with the inlet of the treating agent storage tank 3052.

Wherein, the first outlet of the first condenser 3051 is communicated with the inlet of the second condenser 3053, and it can be understood that the first condenser 3051 and the second condenser 3053 are arranged in series. When the first condenser 3051 and the second condenser 3053 both include cold traps, the first condenser 3051 and the second condenser 3053 may be connected in series, specifically, two cold traps may be connected in series, and the two cold traps may be connected to the same refrigerator, share the same refrigerator, or may be connected to different refrigerators, respectively.

It is understood that, according to the above-described configuration, the second condenser 3053 is additionally provided in the processing agent recovery apparatus 305, and the first condenser 3051 and the second condenser 3053 are provided in series, so that, when the amount of the gas obtained by vaporizing the processing agent is large, the processing agent gas which has not been cooled by the first condenser 3051 can be continuously condensed by the second condenser 3053.

Alternatively, in another embodiment, as shown in fig. 11, the treating agent recovering device 305 further includes a third condenser 3054, the third condenser 3054 has an inlet and an outlet, the inlet of the first condenser 3051 and the inlet of the third condenser 3054 are both communicated with the first outlet of the vacuum separation device 302, and the outlet of the first condenser 3051 and the outlet of the third condenser 3054 are both communicated with the inlet of the treating agent storage tank 3052.

Wherein, the inlet of the first condenser 3051 and the inlet of the third condenser 3054 are both communicated with the first outlet of the vacuum separation device 302, it can be understood that the first condenser 3051 and the third condenser 3054 are arranged in parallel. When the first condenser 3051 and the third condenser 3054 both include cold traps, the first condenser 3051 and the third condenser 3054 may be connected in parallel, specifically, two cold traps may be connected in parallel, and the two cold traps may be connected to the same refrigerator, share the same refrigerator, or may be connected to different refrigerators, respectively.

It can be understood that, according to the above-described configuration, the third condenser 3054 is additionally provided in the processing agent recovery apparatus 305, and the first condenser 3051 and the third condenser 3054 are provided in parallel, so that when the amount of gas obtained by gasifying the processing agent is large, a part of the processing agent gas can be sent to the third condenser 3054 to be condensed, and the recovery efficiency can be improved.

In view of the fact that a part of oil remains in the lower first sludge and a part of treating agent is mixed, in order to further remove the part of oil and the part of treating agent, in the method for treating drilling mud provided by the above embodiment of the present application, water is added into the first sludge to wash the first sludge again, so that the oil remaining in the first sludge can be continuously dissolved in the treating agent remaining in the first sludge. Thus, in one embodiment, the agitator mixing tank 301 further has a third inlet and a third outlet, and the apparatus 30 for treating drilling mud provided by the embodiments of the present application further comprises a first water storage tank 307, wherein the first water storage tank 307 has an inlet and an outlet, the third outlet of the agitator mixing tank 301 is in communication with the inlet of the first water storage tank 307, and the outlet of the first water storage tank 307 is in communication with the third inlet of the agitator mixing tank 301, as shown in fig. 12.

Wherein, the third inlet of the agitation mixing tank 301 may input the water C, and the input water may be the water recovered from the first water storage tank 307, and/or the water introduced from the outside.

After the first sludge is stirred, washed and stood by water, the upper layer is a second mixed solution containing oil and a treating agent, the middle layer is a water layer, the lower layer is the second sludge, after the second mixed solution on the upper layer is led out, the water on the middle layer can be output through a third outlet of the stirring and mixing tank 301 and conveyed to the first water storage tank 307 to be recycled.

The outlet of the first water storage tank 307 is communicated with the third inlet of the stirring and mixing tank 301, so that the water recovered from the first water storage tank 307 can be reused, and the first sludge generated in the next batch can be washed.

It can be understood that, by the above scheme, the stirring and mixing tank 301 further has a third outlet and a third inlet, the third outlet of the stirring and mixing tank 301 is communicated with the inlet of the first water storage tank 307, and the outlet of the first water storage tank 307 is communicated with the third inlet of the stirring and mixing tank 301, so that the first sludge can be washed, oil products and treating agents in the sludge can be further removed, and meanwhile, the recycling of the washing water can also be realized.

In order to ensure the continuity of the sludge treatment process, in one embodiment, the apparatus 30 for treating drilling mud provided by the embodiment of the present application further includes a sludge treatment tank 308, the sludge treatment tank 308 has an inlet and an outlet, the second outlet of the stirring and mixing tank 301 is communicated with the inlet of the sludge treatment tank 308, and the outlet of the sludge treatment tank 308 is communicated with the inlet of the filter press 303, as shown in fig. 13.

The sludge disposal tank 308 may be used to temporarily store sludge discharged from the agitator mixing tank 301. Because the mode of processing the drilling mud by the stirring and mixing tank 301 belongs to an intermittent processing mode, if the stirring and mixing tank 301 is directly connected with the filter press 303, the mud cannot be ensured to be continuously input into the filter press 303, and the mud processing process is interrupted. After a certain amount of sludge is temporarily stored in the sludge treatment tank 308, the sludge is introduced into the filter press 303, and the sludge treatment tank 308 always has a certain amount of sludge, so that the continuity of the sludge treatment process of the filter press 303 can be ensured.

The sludge disposal tank 308 can be further provided with an observation sight glass and a gas release valve, so that an operator can observe conveniently, and light petroleum gas components are discharged, and the light petroleum gas components are prevented from being continuously accumulated to reach the explosion limit.

It can be understood that, by adopting the scheme, the sludge treatment tank 308 is arranged between the stirring mixing tank 301 and the filter press 303 for temporarily storing the sludge, so that the continuity of the sludge treatment process can be ensured.

On the other hand, in order to reduce the environmental impact of the discharge of the sludge and improve the reduction treatment effect, the method for treating the drilling mud provided by the above embodiment of the application adds the oxidizing agent and the flocculating agent into the sludge. The sludge disposal tank 308 may also serve as a reaction vessel for the sludge with the oxidizing agent and the flocculant, and the sludge is transported to the filter press 303 after the reaction. In practical application, in order to improve the reaction effect of the sludge, the oxidant and the flocculant, a stirrer can be further arranged inside the sludge treatment tank 308, and the reaction is accelerated by stirring.

Further, the apparatus 30 for processing drilling mud provided by the embodiment of the present application may further include a first reagent storage tank 309 and a second reagent storage tank 310, the mud disposal tank 308 has a first inlet and a second inlet, an outlet of the first reagent storage tank 309 is communicated with the second inlet of the agitator mixing tank 301, a second outlet of the agitator mixing tank 301 is communicated with the first inlet of the mud disposal tank 308, and an outlet of the second reagent storage tank 310 is communicated with the second inlet of the mud disposal tank 308, as shown in fig. 14.

Wherein the first agent reservoir 309 may be used to store and dispense treatment agents and the second agent reservoir 310 may be used to store and dispense agents for treating sludge, such as oxidizers and flocculants.

It is understood that, by the above-mentioned solution, the first medicament storage tank 309 and the second medicament storage tank 310 are provided and connected with the agitator mixing tank 301 and the sludge disposal tank 308 respectively, so that the treatment medicaments can be conveniently input into the agitator mixing tank 301 and the sludge disposal tank 308.

In addition, in order to facilitate the material transportation and the material transportation monitoring, various transportation pumps and monitoring instruments may be further disposed in the processing equipment 30, for example, a roots pump is disposed for transporting drilling mud into the stirring and mixing tank 301, a mud pump is disposed for transporting mud in the stirring and mixing tank 301 into the mud disposal tank 308, and a flow meter, a pressure meter, and the like are disposed on the transportation pipeline. Meanwhile, in the processing apparatus 30, explosion-proof devices may be used for each device in order to further improve the safety of the processing.

Based on the apparatus 30 for treating drilling mud provided in the above-described embodiments of the present application, the present application also provides a more specific apparatus 40 for treating drilling mud, it being understood that the apparatus 40 is merely an example and does not represent a limitation of the apparatus for treating drilling mud provided in the embodiments of the present application. As shown in fig. 15, the apparatus 40 includes: a first medicament storage tank 401, a stirring and mixing tank 402, a mixed liquid storage tank 403, a membrane separator 404, a vacuum unit, a cold trap 405, a refrigerator, an oil product storage tank 406, a treating agent storage tank 407, a first water storage tank 408, a second medicament storage tank 409, a sludge treatment tank 410, a filter press 411 and a second water storage tank 412; the agitation mixing tank 402 has a first inlet, a second inlet, a third inlet, a first outlet, a second outlet, and a third outlet, the membrane separator 404 has a first outlet and a second outlet, the sludge disposal tank 410 has a first inlet and a second inlet, and the filter press 411 has a first outlet and a second outlet; the first inlet of the mixing tank 402 is used for inputting drilling mud A into the mixing tank 402, and the outlet of the first medicament storage tank 401 is communicated with the second inlet of the mixing tank 402 and is used for inputting treatment medicament B; a first outlet of the stirring and mixing tank 402 is communicated with an inlet of the mixed liquor storage tank 403, and an outlet of the mixed liquor storage tank 403 is communicated with an inlet of the membrane separator 404; a first outlet of the membrane separator 404 is communicated with an inlet of the cold trap 405, a second outlet of the membrane separator 404 is communicated with an inlet of the oil product storage tank 406, and the membrane separator 404 is connected with the vacuum unit; the outlet of the cold trap 405 is communicated with the inlet of the treating agent storage tank 407, and the cold trap 405 is connected with the refrigerator; a third outlet of the agitator mixing tank 402 is in communication with an inlet of the first water storage tank 408, and an outlet of the first water storage tank 408 is in communication with a third inlet of the agitator mixing tank 402; a second outlet of the blender mixing tank 402 is in communication with a first inlet of the sludge disposal tank 410 and an outlet of the second medicament storage tank 409 is in communication with a second inlet of the sludge disposal tank 410; the outlet of the sludge disposal tank 410 is communicated with the inlet of the filter press 411, the first outlet of the filter press 411 is communicated with the inlet of the second water storage tank 412, and the second outlet of the filter press 411 is used for discharging sludge.

The agitator mixing tank 402 may be used to mix the drilling mud and the treatment agent, and may provide a space for the mixed materials to rest. During stirring, the oil in the drilling mud is separated and dissolved in the treating agent, during standing, the mixed liquid containing the oil and the treating agent floats on the upper layer due to density difference, and the sludge without the oil is settled on the lower layer, so that the oil in the drilling mud is removed.

The vacuum unit is used for providing a vacuum environment for the membrane separator 404, after the mixed liquid containing the oil and the treating agent enters the membrane separator 404, the temperature of the treating agent in the mixed liquid is higher than the boiling point of the mixed liquid under the vacuum condition, and the mixed liquid is gasified into gas, and the temperature of the oil in the mixed liquid is lower than the boiling point of the oil and still keeps liquid; and then the treating agent is separated from the oil product. The membrane separator 404 is provided with a rotary distributor, and the mixed liquid enters the membrane separator and then forms a continuous and uniform liquid film through the rotary distributor, so that the treating agent can be quickly gasified and changed into gas and quickly separated from oil.

The functions of the other devices can be referred to the above embodiments of the present application, and are not described herein again.

It can be understood that, according to the apparatus 40 for treating drilling mud provided by the embodiment of the present application, the apparatus 40 does not include a heating device, and drilling mud can be treated at normal temperature to remove oil therein, thereby improving the safety of the drilling mud treatment process. On the other hand, the equipment 40 does not include a heating device, so that the investment cost of the equipment is reduced.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims (10)

1. An apparatus for processing drilling mud, the apparatus comprising: a stirring and mixing tank, a vacuum separation device and a filter press;

wherein the agitator mixing tank has a first outlet and a second outlet, the vacuum separation device has an inlet, and the filter press has an inlet;

and a first outlet of the stirring and mixing tank is communicated with an inlet of the vacuum separation device, and a second outlet of the stirring and mixing tank is communicated with an inlet of the filter press.

2. The apparatus of claim 1, wherein the vacuum separation device comprises a membrane separator and a vacuum train;

the membrane separator is connected with the vacuum unit and is provided with an inlet;

the first outlet of the stirring and mixing tank is communicated with the inlet of the membrane separator.

3. The apparatus of claim 1, further comprising a mixed liquor storage tank;

the mixed liquor storage tank has an inlet and an outlet;

the first outlet of the stirring and mixing tank is communicated with the inlet of the mixed liquid storage tank, and the outlet of the mixed liquid storage tank is communicated with the inlet of the vacuum separation device.

4. The apparatus of claim 1, further comprising a treating agent recovery device and an oil storage tank;

the treating agent recovery device is provided with an inlet, the oil product storage tank is provided with an inlet, and the vacuum separation device is also provided with a first outlet and a second outlet;

and a first outlet of the vacuum separation device is communicated with an inlet of the treating agent recovery device, and a second outlet of the vacuum separation device is communicated with an inlet of the oil product storage tank.

5. The apparatus of claim 4, wherein the treating agent recovery device comprises a first condenser and a treating agent storage tank;

the first condenser has an inlet and an outlet, the treating agent storage tank has an inlet;

the first outlet of the vacuum separation device is communicated with the inlet of the first condenser, and the outlet of the first condenser is communicated with the inlet of the treating agent storage tank.

6. The apparatus of claim 5, wherein the treatment agent recovery device further comprises a second condenser;

the second condenser having an inlet and an outlet, the first condenser having a first outlet and a second outlet;

the first outlet of the first condenser is communicated with the inlet of the second condenser, the second outlet of the first condenser is communicated with the inlet of the treating agent storage tank, and the outlet of the second condenser is communicated with the inlet of the treating agent storage tank.

7. The apparatus of claim 5, wherein the treatment agent recovery device further comprises a third condenser;

the third condenser having an inlet and an outlet;

the inlet of the first condenser and the inlet of the third condenser are both communicated with the first outlet of the vacuum separation device; and the outlet of the first condenser and the outlet of the third condenser are both communicated with the inlet of the treating agent storage tank.

8. The apparatus of claim 1, wherein the blender mixing tank further has a third inlet and a third outlet, the apparatus further comprising a first water storage tank;

the first water storage tank having an inlet and an outlet;

and a third outlet of the stirring and mixing tank is communicated with an inlet of the first water storage tank, and an outlet of the first water storage tank is communicated with a third inlet of the stirring and mixing tank.

9. The apparatus of claim 1, further comprising a sludge disposal tank;

the sludge treatment tank has an inlet and an outlet;

and a second outlet of the stirring and mixing tank is communicated with an inlet of the sludge treatment tank, and an outlet of the sludge treatment tank is communicated with an inlet of the filter press.

10. The apparatus of claim 9, further comprising a first medicament reservoir and a second medicament reservoir;

the sludge treatment tank is provided with a first inlet and a second inlet, and the stirring and mixing tank is also provided with a second inlet;

the outlet of the first medicament storage tank is communicated with the second inlet of the stirring and mixing tank, the second outlet of the stirring and mixing tank is communicated with the first inlet of the sludge treatment tank, and the outlet of the second medicament storage tank is communicated with the second inlet of the sludge treatment tank.

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