CN214660077U - Oil base drill chip processing apparatus - Google Patents
Oil base drill chip processing apparatus Download PDFInfo
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- CN214660077U CN214660077U CN202120257934.9U CN202120257934U CN214660077U CN 214660077 U CN214660077 U CN 214660077U CN 202120257934 U CN202120257934 U CN 202120257934U CN 214660077 U CN214660077 U CN 214660077U
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Abstract
The utility model discloses an oil base drill chip processing apparatus, this oil base drill chip processing apparatus, include: a pyrolysis unit for thermal desorption of the oil-based drill cuttings; the condensation unit is used for condensing oil gas generated by the thermal desorption; and strong brine obtained after reverse osmosis treatment of the reverse drainage is used as a cold source of the condensation unit. The utility model discloses an anti-drainage is handled back gained strong brine and is used for the cold source of condensing unit, is carrying out the condensation to the oil gas that thermal desorption produced like this for the strong brine is heated, and then forms the crystalline salt, has reduced the cost of strong brine follow-up processing, has reduced the energy consumption.
Description
Technical Field
The utility model belongs to the technical field of oil drilling, concretely relates to oil base drill chip processing apparatus.
Background
In the petroleum industry, well drilling is an indispensable link for producing petroleum, wherein oil-based drilling fluid is a stable colloid system which takes oil (such as diesel oil or white oil) as a continuous phase and water as a dispersed phase and contains a proper amount of emulsifier, wetting agent, oleophilic colloid, weighting agent and the like, and has the characteristics of safety, strong inhibition, good lubricity, high drilling speed and the like, so that the oil-based drilling fluid is widely used for drilling in horizontal sections of shale (oil) gas wells, special complex wells and the like, and a large amount of oil-containing drill cuttings generated in the drilling process, namely oil-based drill cuttings contain a large amount of mineral oil and the additive, and belong to dangerous solid wastes. If not properly disposed of, on the one hand, it can cause serious harm to the surrounding environment and, on the other hand, waste a large amount of mineral oil resources. The treatment of oil-based drill cuttings is typically carried out by thermal desorption.
Meanwhile, in the process of petroleum drilling, a large amount of back-drainage liquid is generated, wherein the salt content of the back-drainage liquid is high, after RO reverse osmosis treatment, the salt content of the obtained strong brine can reach about 6-10%, and if the strong brine is dried to obtain crystallized salt, in the prior art, the strong brine obtained by reverse osmosis is directly sent into a climbing film evaporator to be continuously concentrated, and then, heat energy is utilized for crystallization, so that the energy consumption consumed by the treatment process is high.
SUMMERY OF THE UTILITY MODEL
The utility model discloses not enough and defect to prior art exists, the utility model aims to provide an oil base drill chip processing apparatus.
The utility model provides a technical scheme that technical problem adopted as follows:
an oil-based cuttings processing apparatus comprising:
a pyrolysis unit for thermal desorption of the oil-based drill cuttings; the condensation unit is used for condensing oil gas generated by the thermal desorption;
and strong brine obtained after reverse osmosis treatment of the reverse drainage is used as a cold source of the condensation unit.
In the above oil-based drill cutting treatment apparatus, as a preferred embodiment, the salt content of the concentrated brine is 6 to 10 wt.%.
In the above oil-based drill cutting treatment device, as a preferred embodiment, the oil-based drill cutting treatment device further comprises a combustion unit, and the hot gas generated by the combustion unit can be used as a heat source for the thermal desorption in the pyrolysis unit.
In the above oil-based drill cutting treatment apparatus, as a preferred embodiment, the combustion unit is a combustion furnace.
In the above oil-based drill cutting treatment device, as a preferred embodiment, the condensation unit includes a condenser, an oil gas inlet of the condenser is connected to an oil gas outlet of the pyrolysis unit, and the strong brine is used as a cold source of the condenser to condense oil gas entering the condenser from the pyrolysis unit.
In the above oil-based drill cutting treatment device, as a preferred embodiment, the condensing unit further includes a first air exchanger, an oil-gas inlet of the first air exchanger is connected to an oil-gas outlet of the pyrolysis unit, and an oil-gas outlet of the first air exchanger is connected to an oil-gas inlet of the condenser; the cold medium of the first air exchanger is air and is used for condensing the oil gas entering the first air exchanger; the oil gas firstly enters the first air exchanger for heat exchange and then enters the condenser for condensation.
In the above oil-based drill cutting treatment device, as a preferred embodiment, the air outlet of the first air exchanger is connected to the combustion unit, and the air flowing out of the first air exchanger enters the combustion unit to participate in the combustion reaction.
In the oil-based drill cuttings processing apparatus, as a preferred embodiment, the oil-based drill cuttings processing apparatus further includes a combustion tail gas processing unit, the combustion tail gas is the hot gas which is subjected to heat exchange with the pyrolysis unit, and the temperature of the combustion tail gas is 300-.
In the oil-based drill cuttings processing device, as a preferred embodiment, the combustion tail gas processing unit comprises a second air exchanger, and a combustion tail gas inlet of the second air exchanger is connected with a combustion tail gas outlet of the pyrolysis unit; and the combustion tail gas enters the second air exchanger to exchange heat with air.
In the above oil-based drill cutting treatment device, as a preferred embodiment, the air outlet of the second air exchanger is connected to the combustion unit, and the air flowing out of the second air exchanger enters the combustion unit to participate in the combustion reaction.
In the above oil-based drill cutting treatment apparatus, as a preferred embodiment, the air outlet of the second air exchanger is connected to the air inlet of the first air exchanger.
In the above oil-based drill cutting treatment device, as a preferred embodiment, the combustion tail gas treatment unit further includes a heat exchanger, and a combustion tail gas inlet of the heat exchanger is connected to a combustion tail gas outlet of the second air exchanger; and the combustion tail gas subjected to heat exchange by the second air exchanger enters the heat exchanger for cooling, and a cold source of the heat exchanger is the strong brine.
In the above oil-based drill cutting treatment device, as a preferred embodiment, the oil-based drill cutting treatment device further comprises a drying unit, and the concentrated brine outlet of the condenser is connected with the inlet of the drying unit; the drying unit is used for drying the strong brine flowing out of the condenser so as to form crystallized salt.
In the oil-based drill cutting processing device, as a preferred embodiment, the strong brine outlet of the heat exchanger is connected with the inlet of the drying unit; the drying unit is used for drying the strong brine flowing out of the condenser so as to form crystallized salt.
In the above oil-based drill cutting treatment device, as a preferred embodiment, the concentrated brine outlet of the heat exchanger is connected to the concentrated brine inlet of the condenser, and the concentrated brine treated by the heat exchanger can be used as a cold source of the condenser.
In the above oil-based drill cutting treatment apparatus, as a preferred embodiment, the drying unit is a multi-effect drying tower.
Compared with the prior art, the utility model discloses following beneficial effect has:
(1) compare in the tradition adopt water directly to spray hot oil gas, carry out oil water separating again and to water cooling, recirculation to the mode of periodic treatment waste water, the utility model discloses innovatively adopt the condensing unit to condense the oil gas that thermal desorption produced, introduce the strong brine that produces the anti-drainage processing to thermal desorption heat utilization system in to simple and convenient technology, reduce cost, the high quality of the oil that obtains, oil can directly use moreover, the utility model discloses processing apparatus and method do not produce sewage, and the energy consumption is low and pollute for a short time.
(2) The utility model discloses an anti-strong brine that obtains after the drainage is handled is used for the cold source of condensing unit, when carrying out the condensation to the oil gas that thermal desorption produced like this for strong brine is heated, has reduced the cost of strong brine follow-up processing, has reduced the energy consumption.
Drawings
Fig. 1 is a schematic structural diagram of the oil-based drilling cutting treatment device of the present invention;
wherein, 1 is a combustion furnace, 2 is a pyrolysis furnace, 3 is a condenser, 4 is a first air exchanger, 5 is a second air exchanger, 6 is a heat exchanger, and 7 is a multi-effect drying tower.
Detailed Description
In order to highlight the objects, technical solutions and advantages of the present invention, the present invention will be further described with reference to the following embodiments, examples of which are provided by way of illustration rather than limitation of the present invention. The technical solution of the present invention is not limited to the following specific embodiments, but also includes any combination between the specific embodiments.
Example 1:
the utility model provides an oil base drill chip processing apparatus, this oil base drill chip processing apparatus includes:
the combustion furnace 1, for example, the energy source such as natural gas is combusted in the combustion furnace 1 to generate heat, and the temperature of hot gas (i.e. combustion tail gas after passing through the pyrolysis furnace 2) generated by the combustion furnace 1 is 300-;
the pyrolysis furnace 2 is connected with the combustion furnace 1, hot gas generated in the combustion furnace 1 is used as a heat source, oil-based drilling cuttings generated in the drilling process are subjected to thermal desorption (the temperature of the thermal desorption furnace is 330-400 ℃) in the pyrolysis furnace 2 to generate hot oil gas, and the temperature of the hot oil gas can reach about 330 ℃;
hot oil gas generated by the pyrolysis furnace 2 enters the condenser 3, a cold source of the condenser 3 is strong brine obtained after reverse drainage is subjected to reverse osmosis treatment, and after the strong brine is condensed, oil content in the hot oil gas is condensed into oil, so that the oil content is simply and conveniently recovered; preferably, a first air exchanger 4 is further arranged between the pyrolysis furnace 2 and the condenser 3, an oil gas inlet of the first air exchanger 4 is connected with an oil gas outlet of the pyrolysis furnace 2, an oil gas outlet of the first air exchanger 4 is connected with an oil gas inlet of the condenser 3, hot oil gas firstly enters the first air exchanger 4, the temperature of the hot oil gas is reduced to 280-300 ℃ under the action of cold medium air in the first air exchanger 4, at the moment, a part of oil is condensed into oil, and then, the cooled oil gas enters the condenser 3 for further condensation, so that the oil is recovered again. Oil gas (uncondensed cracking oil gas) condensed by the condenser 3 enters the combustion furnace 1 to participate in combustion; preferably, the first air exchanger 4 is connected to the combustion furnace 1, and air passing through the first air exchanger 4 and heat-exchanged hot oil gas enters the combustion furnace 1 to participate in combustion. Meanwhile, after the strong brine exchanges heat with the first air exchanger 4 and the condenser 3, the temperature of the strong brine rises, and the temperature of the strong brine discharged from the condenser 3 rises to 55-65 ℃ from the initial temperature of 23-28 ℃.
The oil-based drilling cutting processing device further comprises a combustion tail gas processing unit, wherein the combustion tail gas processing unit comprises a second air exchanger 5 and a heat exchanger 6, a combustion tail gas inlet of the second air exchanger 5 is connected with a combustion tail gas outlet of the pyrolysis furnace 2, and a combustion tail gas outlet of the second air exchanger 5 is connected with a combustion tail gas inlet of the heat exchanger 6, specifically, after heat exchange is carried out on the combustion tail gas generated by the combustion furnace 1 in the pyrolysis furnace 2, the temperature can be about 300 ℃, the combustion tail gas enters the second air exchanger 5 to be cooled under the action of cold medium air and then enters the heat exchanger 6, wherein a cold source of the heat exchanger 6 is preferably strong brine obtained after reverse osmosis treatment of reverse drainage liquid, and after passing through the heat exchanger 6, the temperature of the strong brine is increased through heat exchange; the air outlet of the second air exchanger 5 is connected with the air inlet of the combustion furnace 1, and the air after heat exchange with the combustion tail gas in the second air exchanger 5 enters the combustion furnace 1 to participate in combustion;
preferably, the first air exchanger 4 is connected with the second air exchanger 5, the air is firstly subjected to heat exchange in the second air exchanger 5, and the temperature of the air after the heat exchange is about 100 ℃; then enters a first air exchanger 4 to exchange heat with hot oil gas, and the temperature of the air after heat exchange is about 160 ℃; after which air enters the furnace 1 to participate in the combustion.
The oil-based drilling cutting processing device also comprises a drying unit for drying the strong brine processed by the condenser 3 and the heat exchanger 6, wherein the drying unit is preferably a multi-effect drying tower 7, and crystallized salt is formed after the drying unit passes through the multi-effect drying tower 7. Mixing the concentrated brine processed by the condenser 3 with the concentrated brine processed by the heat exchanger 6 (as shown in figure 1), and drying in a multi-effect drying tower 7; preferably, the concentrated brine processed by the heat exchanger 6 enters the condenser 3 and then enters the multi-effect drying tower 7 for crystallization and salt formation. The concentrated brine entering the multi-effect drying tower 7 only needs to meet the requirements of the multi-effect drying tower 7, and the concentrations of the concentrated brine processed by the condenser 3 and the concentrated brine processed by the heat exchanger 6 can be realized by adjusting the proportion of a cold source and a heat source entering the condenser 3 and the heat exchanger 6, the contact area of the cold source and the heat source and the like.
The above embodiments describe the basic principles, main features and advantages of the present invention, and those skilled in the art should understand that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only for illustration of the principles of the present invention, without departing from the scope of the present invention, the present invention can also have various changes and improvements, and these changes and improvements all fall into the protection scope of the present invention.
Claims (10)
1. An oil-based cuttings processing apparatus, comprising:
a pyrolysis unit for thermal desorption of the oil-based drill cuttings; the condensation unit is used for condensing oil gas generated by the thermal desorption;
and strong brine obtained after reverse osmosis treatment of the reverse drainage is used as a cold source of the condensation unit.
2. The oil-based drill cuttings processing apparatus of claim 1, further comprising a combustion unit, wherein hot gas generated by the combustion unit is usable as a heat source for the thermal desorption in the pyrolysis unit.
3. The oil-based drill cutting treatment device according to claim 2, wherein the condensation unit comprises a condenser, an oil gas inlet of the condenser is connected with an oil gas outlet of the pyrolysis unit, and the strong brine is used as a cold source of the condenser to condense the oil gas entering the condenser from the pyrolysis unit.
4. The oil-based drill cuttings disposal apparatus of claim 3, wherein the condensing unit further comprises a first air exchanger, an oil and gas inlet of the first air exchanger being connected to an oil and gas outlet of the pyrolysis unit, an oil and gas outlet of the first air exchanger being connected to an oil and gas inlet of the condenser; the cold medium of the first air exchanger is air and is used for condensing the oil gas entering the first air exchanger; the oil gas firstly enters the first air exchanger for heat exchange and then enters the condenser for condensation;
and the air outlet of the first air exchanger is connected with the combustion unit, and the air flowing out of the first air exchanger enters the combustion unit to participate in combustion reaction.
5. The oil-based drill cuttings processing apparatus of claim 4, wherein the oil-based drill cuttings processing apparatus further comprises a combustion exhaust gas processing unit, the combustion exhaust gas is the hot gas that is heat exchanged with the pyrolysis unit, and the temperature of the combustion exhaust gas is 300-500 ℃.
6. The oil-based drill cuttings disposal apparatus of claim 5, wherein the combustion exhaust gas disposal unit comprises a second air exchanger, a combustion exhaust gas inlet of the second air exchanger being connected to a combustion exhaust gas outlet of the pyrolysis unit; the combustion tail gas enters the second air exchanger to exchange heat with air;
the air outlet of the second air exchanger is connected with the combustion unit, and the air flowing out of the second air exchanger enters the combustion unit to participate in combustion reaction;
the air outlet of the second air exchanger is connected with the air inlet of the first air exchanger.
7. The oil-based drill cuttings processing apparatus according to claim 6, wherein the combustion exhaust gas processing unit further comprises a heat exchanger, a combustion exhaust gas inlet of the heat exchanger being connected to a combustion exhaust gas outlet of the second air exchanger; and the combustion tail gas subjected to heat exchange by the second air exchanger enters the heat exchanger for cooling, and a cold source of the heat exchanger is the strong brine.
8. The oil-based drill cuttings processing apparatus of claim 7, further comprising a drying unit, wherein the concentrated brine outlet of the condenser is connected to an inlet of the drying unit; the drying unit is used for drying the strong brine flowing out of the condenser so as to form crystallized salt.
9. The oil-based cuttings processing apparatus of claim 8,
the drying unit is a multi-effect drying tower.
10. The oil-based drill cuttings disposal apparatus of claim 8, wherein a strong brine outlet of the heat exchanger is connected to an inlet of the drying unit; the drying unit is used for drying the strong brine flowing out of the condenser so as to form crystallized salt;
the strong brine outlet of the heat exchanger is connected with the strong brine inlet of the condenser, and the strong brine processed by the heat exchanger can be used as a cold source of the condenser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120257934.9U CN214660077U (en) | 2021-01-29 | 2021-01-29 | Oil base drill chip processing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120257934.9U CN214660077U (en) | 2021-01-29 | 2021-01-29 | Oil base drill chip processing apparatus |
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| Publication Number | Publication Date |
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| CN214660077U true CN214660077U (en) | 2021-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120257934.9U Active CN214660077U (en) | 2021-01-29 | 2021-01-29 | Oil base drill chip processing apparatus |
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| CN (1) | CN214660077U (en) |
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2021
- 2021-01-29 CN CN202120257934.9U patent/CN214660077U/en active Active
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Effective date of registration: 20220217 Address after: Room 913-3, floor 9, building 4, yard 1, Shangdi 10th Street, Haidian District, Beijing 100085 Patentee after: BEIJING SHENZHOU ZHUOYUE PETROLEUM TECHNOLOGY CO.,LTD. Address before: 100107 No.503, unit 1, 11th floor, No.1 beach, Wali north, Chaoyang District, Beijing Patentee before: Li Lei Patentee before: Plum tree |
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