CN215832221U - Intelligent phase-change separation hydrocarbon mixing unit - Google Patents

Abstract

The utility model relates to an intelligent phase change separation hydrocarbon mixing unit, which relates to the technical field of oilfield equipment and comprises six cyclone separators, three evaporators, three condensers and two liquid collecting tanks, wherein the six cyclone separators are arranged in parallel and communicated with a second liquid collecting tank, the three evaporators are arranged in parallel and communicated with the second liquid collecting tank, the three condensers are arranged in parallel and communicated with the second liquid collecting tank, and the cyclone separators, the evaporators and the condensers are sequentially connected in series through pipelines. According to the method, the mixed hydrocarbon and the moisture in the associated gas are effectively separated, the treated associated gas can be directly used for a boiler/heating furnace combustion system or is intensively output through a compressor, and the problems of freezing blockage and corrosion of pipeline equipment, accumulated liquid blockage at a low-lying position of a pipeline, frequent failure of a conveying compressor and the like are fundamentally solved; the condensate is automatically recovered and conveyed, and the problem that the condensate on the oil field needs frequent manual drainage is solved.

Description

Intelligent phase-change separation hydrocarbon mixing unit

Technical Field

The utility model relates to the technical field of oilfield equipment, in particular to an intelligent phase-change separation hydrocarbon mixing unit.

Background

Oilfield associated gas is an unstable mixture of hydrocarbons and other gases that escape from the reservoir during oil recovery production, and is mostly used as fuel for oil recovery well sites and site heating furnaces. At present, the conventional gas-liquid separation device cannot effectively separate mixed hydrocarbon and moisture in the raw gas. Associated gas precipitated condensate often blocks a heating furnace gas supply pipeline in the production process, so that the heating furnace gas supply pipeline is blocked. In winter, in severe cold seasons, the problem is more prominent. The generated faults such as flameout, deflagration and the like of the heating furnace are common, and serious potential safety and environmental protection hazards are generated. Meanwhile, condensate liquid separated by the conventional gas-liquid separation device in the oil field cannot be automatically recovered, and partial condensate liquid on site is directly discharged to a waste liquid pit or is forcibly collected by local villagers, so that serious environmental pollution and a comprehensive treatment leak of social security are caused, and a major risk source point is formed. In recent years, some oil production plants develop self-flowing condensate oil devices to solve the problem of condensate oil recovery to a certain extent, but the devices re-inject collected condensate liquid into a well to cause the circulation of condensate oil, so that the problem cannot be solved fundamentally.

Although the oil-gas separator is installed in the oil field workstation, the separation effect is poor, and the normal use of a heating furnace or the normal work of an output compressor is seriously influenced due to the high content of water and condensate in associated gas; the condensate in the separator and at the front end of the combustor needs to be manually discharged to a waste liquid pit during the operation of the equipment, so that the secondary pollution to the environment is caused, the labor intensity of manual liquid discharge is high, and serious potential safety hazards exist. The intelligent phase change separation hydrocarbon mixing unit for the oil field heating furnace with independent intellectual property rights is researched and developed, and the problems that associated gas separation efficiency is low, combustion ignition of the oil field heating furnace is difficult, flameout is caused, condensate liquid is automatically recovered and conveyed and the like are fundamentally solved, so that the separation efficiency is improved, the safety, energy conservation and environmental protection performance of system operation are effectively improved, and remarkable social benefits and economic benefits are achieved.

Disclosure of Invention

The utility model aims to provide an intelligent phase-change separation hydrocarbon mixing unit to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme:

intelligent phase change separation hydrocarbon mixing unit, including first cyclone, second cyclone, third cyclone, fourth cyclone, fifth cyclone, sixth cyclone, first evaporimeter, second evaporimeter, third evaporimeter, first condenser, second condenser, third condenser, first liquid-collecting tank, second liquid-collecting tank, its characterized in that six cyclone connect in parallel and set up and communicate in second liquid-collecting tank, three evaporimeter connects in parallel and communicates in second liquid-collecting tank, three condenser connects in parallel and sets up and communicates in second liquid-collecting tank, three condenser connects in parallel and communicates in second liquid-collecting tank, cyclone and evaporimeter, condenser pipeline series connection in proper order.

As a further technical scheme of the utility model: install first electric ball valve on the cyclone separator income gas port intercommunication pipeline, with install second electric ball valve on the parallelly connected pipeline of first electric ball valve place pipeline install third electric ball valve on first evaporimeter export and the first condenser entry intercommunication pipeline install fourth electric ball valve on second evaporimeter export and the second condenser entry connection passageway install fifth electric ball valve on third evaporimeter export and the third condenser entry connection passageway install sixth electric ball valve on the pipeline of the common intercommunication of condenser export install seventh electric ball valve on the pipeline of first drain intercommunication install eighth electric ball valve on the pipeline of second drain intercommunication install ninth electric ball valve on the pipeline of the common connection of two drains.

As a further technical scheme of the utility model: still install first pressure sensor on the pipeline between first electric ball valve and cyclone income gas port cyclone the gas vent with install second pressure sensor on the pipeline between the evaporimeter entry install third pressure sensor on the pipeline of condenser exit linkage install fourth pressure sensor and sixth pressure sensor on the connecting tube of second drain, fourth pressure sensor sets up on first flowing back pump rear pipeline, sixth pressure sensor sets up in the one side of being close to going outer defeated pipeline install fifth pressure sensor on the connecting tube of first drain, fifth pressure sensor sets up on second flowing back pump rear pipeline.

As a further technical scheme of the utility model: a first temperature sensor is arranged beside the first pressure sensor, and a second temperature sensor is also arranged beside the third pressure sensor; and the second liquid collecting tank is provided with a second floating ball liquid level switch, a fourth temperature transmitter and a second blowdown valve.

As a further technical scheme of the utility model: the first manual ball valve is installed on the first liquid discharge pump front pipeline, the third manual ball valve is installed on the first liquid discharge pump rear pipeline, the second manual ball valve is installed on the second liquid discharge pump front pipeline, and the fourth manual ball valve is installed on the second liquid discharge pump rear pipeline.

As a further technical scheme of the utility model: and a first backpressure valve is further installed on the pipeline behind the fourth pressure sensor and is arranged between the fourth pressure sensor and the third manual ball valve, a second backpressure valve is further installed on the pipeline behind the fifth pressure sensor and is arranged between the fifth pressure sensor and the fourth manual ball valve.

As a further technical scheme of the utility model: and a liquid feeding valve and a maintenance valve are also arranged on a pipeline connecting the liquid outlet of the cyclone separator with the first liquid inlet on the second liquid collecting tank (802).

Compared with the prior art, the utility model has the beneficial effects that: after effectively separating hydrocarbon mixture and water in associated gas, the separation efficiency can be greatly improved, pipeline blockage and conveying compressor faults caused by reduction of environmental temperature of the associated gas in an oil field are avoided, the problems of difficult ignition, flameout of the heating furnace, deflagration, incomplete combustion, serious nozzle carbon deposition or a burning furnace body and the like of an oil field heating furnace are fundamentally solved, and the safe operation of a system is ensured; in addition, the condensate generated by the existing oil-gas separator, cyclone separation device and low-temperature phase change separation device in the oil field can be recovered and automatically and fully hermetically conveyed to an oil pipeline system, so that the risk is reduced, secondary pollution to the environment in the condensate discharge process is avoided, and the ecological benefit is improved; meanwhile, remote monitoring and control of the equipment are realized through the Internet of things technology, unattended operation is realized, and therefore safety, energy-saving and environment-friendly performance of system operation are effectively improved, and remarkable social benefit and economic benefit are achieved.

Drawings

FIG. 1 is a process flow diagram of an intelligent phase-change separation hydrocarbon mixing unit.

In the figure: 101-first electric ball valve, 102-second electric ball valve, 103-third electric ball valve, 104-fourth electric ball valve, 105-fifth electric ball valve, 106-sixth electric ball valve, 107-seventh electric ball valve, 108-eighth electric ball valve, 109-ninth electric ball valve, 201-first pressure sensor, 202-second pressure sensor, 203-third pressure sensor, 204-fourth pressure sensor, 205-fifth pressure sensor, 206-sixth pressure sensor, 301-first temperature sensor, 302-second temperature sensor, 303-third temperature sensor, 304-fourth temperature sensor, 401-first cyclone separator, 402-second cyclone separator, 403-third cyclone separator, 404-fourth cyclone separator, 405-a fifth cyclone separator, 406-a sixth cyclone separator, 5-a liquid adding valve, 601-a first evaporator, 602-a second evaporator, 603-a third evaporator, 701-a first condenser, 702-a second condenser, 703-a third condenser, 801-a first liquid collecting tank, 802-a second liquid collecting tank, 901-a first drain valve, 902-a second drain valve, 10-a maintenance valve, 111-a first floating ball liquid level switch, 112-a second floating ball liquid level switch, 121-a first manual ball valve, 122-a second manual ball valve, 123-a third manual ball valve, 124-a fourth manual ball valve, 131-a first drain pump, 132-a second drain pump, 141-a first back pressure valve and 142-a second back pressure valve.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Example 1

The intelligent phase change separation hydrocarbon mixing unit shown in fig. 1 comprises a first cyclone separator 401, a second cyclone separator 402, a third cyclone separator 403, a fourth cyclone separator 404, a fifth cyclone separator 405, a sixth cyclone separator 406, a first evaporator 601, a second evaporator 602, a third evaporator 603, a first condenser 701, a second condenser 702, a third condenser 703, a first liquid collecting tank 801, a second liquid collecting tank 802, and the first cyclone separator 401 comprises: the first cyclone separator body 401 is used for preliminarily separating water and liquid hydrocarbon-mixed substances in the oilfield associated gas; the gas inlet 4011 of the first cyclone separator is arranged on the side surface of the first cyclone separator 401 and is used for allowing associated gas of an oil field to enter the cyclone separator; a first cyclone separator exhaust outlet 4012, which is arranged at the top of the first cyclone separator 401, is communicated with the first cyclone separator 401, and is used for discharging primarily separated associated gas; a first cyclone liquid outlet 4013, which is disposed at the bottom of the first cyclone 401, communicates with the first cyclone 401, and is configured to discharge condensate separated in the first cyclone 401; a second cyclonic fluid separator 402 comprising: the second cyclone separator body 402 is used for preliminarily separating water and liquid hydrocarbon-mixed substances in the oilfield associated gas; the second cyclone separator air inlet 4021 is arranged on the side surface of the second cyclone separator 402 and is used for allowing oilfield associated gas to enter the cyclone separator; a second cyclone separator exhaust outlet 4022 which is arranged at the top of the second cyclone separator 402, communicated with the second cyclone separator 402 and used for discharging primarily separated associated gas; a second cyclone liquid discharge port 4023 provided at the bottom of the second cyclone 402 and communicating with the second cyclone 402, for discharging the condensate separated in the second cyclone 402; a third cyclonic separator 403 comprising: the third cyclone separator body 403 is used for primarily separating water and liquid hydrocarbon-mixed substances in the oilfield associated gas; a third cyclone separator gas inlet 4031 arranged on the side surface of the third cyclone separator 403 and used for allowing oilfield associated gas to enter the cyclone separator; a third cyclone separator exhaust port 4032 which is arranged at the top of the third cyclone separator 403, is communicated with the third cyclone separator 403 and is used for discharging the primarily separated associated gas; a third cyclone liquid discharge port 4033 provided at the bottom of the third cyclone 403 and communicating with the third cyclone 403, for discharging the condensate separated in the third cyclone 403; the fourth cyclone separator 404 comprises a fourth cyclone separator body 404 for primarily separating water and liquid hydrocarbon-mixed substances in the oilfield associated gas; a fourth cyclone separator gas inlet 4041, which is arranged on the side surface of the fourth cyclone separator 404 and is used for allowing the oilfield associated gas to enter the cyclone separator; a fourth cyclone separator exhaust port 4042, which is arranged at the top of the fourth cyclone separator 404, is communicated with the fourth cyclone separator 404, and is used for discharging the primarily separated associated gas; a fourth cyclone liquid outlet 4043 which is provided at the bottom of the fourth cyclone 404, communicates with the fourth cyclone 404, and is configured to discharge the condensate separated by the fourth cyclone 404; the fifth cyclone separator 405 comprises a fifth cyclone separator body 405 for primarily separating water and liquid hydrocarbon mixture in the oilfield associated gas; an air inlet 4051 of the fifth cyclone separator, which is arranged on the side surface of the fourth cyclone separator 405 and is used for allowing the oilfield associated gas to enter the cyclone separator; a fifth cyclone separator exhaust port 4052 which is provided at the top of the fifth cyclone separator 405, communicates with the fifth cyclone separator 405, and is used for discharging the primarily separated associated gas; a fifth cyclone liquid outlet 4053 which is provided at the bottom of the fifth cyclone 405, communicates with the fifth cyclone 405, and is configured to discharge the condensate separated in the fifth cyclone 405; the sixth cyclone separator 406 comprises a sixth cyclone separator body 406 and is used for primarily separating water and liquid hydrocarbon-mixed substances in the oilfield associated gas; a sixth cyclone separator gas inlet 4061 arranged at the side of the sixth cyclone separator 406 for allowing the oilfield associated gas to enter the cyclone separator; a sixth cyclone separator exhaust port 4062 which is provided at the top of the sixth cyclone separator 406 and communicated with the sixth cyclone separator 406, and is used for discharging the primarily separated associated gas; a sixth cyclone liquid outlet 4063 which is provided at the bottom of the sixth cyclone 406, communicates with the sixth cyclone 406, and discharges the condensate separated in the sixth cyclone 406; the six cyclone separators are connected in parallel, the air inlets of the six cyclone separators are connected in parallel with the main air inlet pipe, and the air outlets of the six cyclone separators are connected in parallel with the main exhaust pipe; the first evaporator 601 is used for cooling the associated gas which is not completely separated, deeply separating water and hydrocarbon-mixed substances in a low-temperature environment and improving the separation efficiency, and comprises a first evaporator inlet 6011, and exhaust ports 4012, 4022, 4032, 4042, 4052 and 4062 which are arranged at the top of the first evaporator 601 and communicated with the cyclone separator through pipelines; and a first evaporator outlet 6012 disposed at a side of a top of the first evaporator 601 away from the first evaporator inlet 6011; a first evaporator liquid discharge port 6013 provided at the bottom of the first evaporator 601, for discharging the condensate separated in the first evaporator 601; the second evaporator 602 is used for cooling the associated gas which is not completely separated, deeply separating water and hydrocarbon-mixed substances in a low-temperature environment and improving the separation efficiency, and comprises a second evaporator inlet 6021, and exhaust ports 4012, 4022, 4032, 4042, 4052 and 4062 which are arranged at the top of the second evaporator 602 and communicated with the cyclone separator through pipelines; and a second evaporator outlet 6022 disposed at a top of the second evaporator 602 on a side away from the second evaporator inlet 6021; a second evaporator drain 6023 disposed at the bottom of the second evaporator 602, for draining the condensate separated in the second evaporator 602; the third evaporator 603 is used for cooling the associated gas which is not completely separated, deeply separating water and hydrocarbon-mixed substances in a low-temperature environment and improving the separation efficiency, and comprises a third evaporator inlet 6031, and exhaust ports 4012, 4022, 4032, 4042, 4052 and 4062 which are arranged at the top of the third evaporator 603 and communicated with the cyclone separator through pipelines; and a third evaporator outlet 6032 disposed at a top of the third evaporator 603 away from the third evaporator inlet 6031; a third evaporator liquid outlet 6033 arranged at the bottom of the third evaporator 603 and used for discharging the condensate liquid separated from the third evaporator 603; the first condenser 701 is used for increasing the temperature of the associated gas and adjusting the temperature of an outlet of the associated gas to a safe conveying temperature, and comprises a first condenser inlet 7011 and an outlet 6012 which is arranged at the top of the first condenser 701 and communicated with the first evaporator through a pipeline; a first condenser outlet 7012 arranged on the side of the top of the first condenser 701 away from the first condenser inlet 7011, and a first condenser liquid outlet 7013 arranged on the bottom of the first condenser 701 for discharging condensate in the first condenser 701; a second condenser 702 for increasing the temperature of the associated gas to adjust the outlet temperature of the associated gas to a safe transportation temperature, comprising: a second condenser inlet 7021 disposed at the top of the second condenser 702 and in communication with the outlet 6022 of the second evaporator via a conduit; a second condenser outlet 7022 arranged on one side of the top of the second condenser 702 away from the second condenser inlet 7021, and a second condenser liquid outlet 7023 arranged at the bottom of the second condenser 702 and used for discharging condensate in the second condenser 702; the third condenser 703 is used for increasing the temperature of the associated gas and adjusting the temperature of an outlet of the associated gas to a safe conveying temperature, and comprises a third condenser inlet 7031 and an outlet 6032 which is arranged at the top of the third condenser 703 and communicated with the third evaporator through a pipeline; a third condenser outlet 7032 arranged on the side of the top of the third condenser 703 far from the third condenser inlet 7031, and a third condenser liquid outlet 7033 arranged on the bottom of the third condenser 703 and used for discharging condensate in the third condenser 703; the first liquid collecting tank 801 is used for storing condensate liquid separated by an existing oil-gas separator on site; a first drain 8011 is provided for draining condensate from the first condensate tank 801; the second liquid collecting tank 802 is used for storing condensate liquid separated from the cyclone separator, the evaporator and the condenser, and comprises a first liquid inlet 8021, liquid outlet ports 4013, 4023, 4033, 4043, 4053 and 4063 which are arranged on the side surface of the second liquid collecting tank 802 and communicated with the cyclone separators 401, 402, 403, 404, 405 and 406; a second liquid inlet 8023 which is provided on the side surface of the second liquid-collecting tank 802 opposite to the first liquid inlet 8021 and communicates with liquid outlets 6013, 6023, and 6033 of the evaporators 601, 602, and 603; a third liquid inlet 8024 provided on the third liquid inlet 8023 side and communicating with liquid outlets 7013, 7023, 7033 of the condensers 701, 702, 703; a second drain outlet 8025 for draining the condensate in the second liquid collecting tank 802; the first drainage pump 131 is communicated with a first drainage port 8011 of the first liquid collecting tank 801 and a second drainage port 8025 of the second liquid collecting tank 802; the second drain pump 132 is connected to the first drain port 8011 of the first collected-liquid tank 801 and the second drain port 8025 of the second collected-liquid tank 802.

The whole device of the intelligent phase change separation hydrocarbon mixing unit comprises four parts, namely cyclone separation, low-temperature phase change separation, condensate automatic recovery and condensate automatic conveying, wherein the cyclone separation comprises six cyclone separators 4, the low-temperature phase change separation comprises three groups of separation devices, each group comprises an evaporator 6 and a condenser 7, when a low-temperature phase change separation system operates, the pressure difference of an inlet and an outlet of the evaporator 6 is greater than a set value, the system is automatically switched to a standby evaporator 6, the evaporator is switched to a defrosting state, only one path of defrosting is allowed during defrosting, more than two paths of refrigeration passages of the system must be met at any time, and therefore stable supply of associated gas is guaranteed. When the associated gas enters the cyclone separator 4 during specific work, an output pipeline of the cyclone separator 4 is connected with three groups of evaporators 6, taking the operation of the first evaporator 601 and the second evaporator 602 in an initial state as an example, when the pressure difference between the inlet and the outlet of the first evaporator 601 is greater than a set value, the system is switched to the operation of the third evaporator 603, meanwhile, the first evaporator 601 is switched to a defrosting state, and when the defrosting time reaches a preset time, defrosting is stopped and the associated gas enters a standby state; the condenser can suitably improve the temperature of associated gas, with associated gas outlet temperature regulation to safe transport temperature, be favorable to the transportation of associated gas, low temperature phase transition separation temperature is controlled by the frequency of compressor, factors such as refrigerant distribution, condensate recovery unit includes two collecting pipes, the condensate liquid that current oil and gas separator in scene separated is stored to first collecting tank 801, cyclone separator is stored to second collecting tank 802, the evaporimeter, the condensate liquid that the condenser was separated, when the liquid level reached the upper limit liquid level of settlement, electronic ball valve is opened, the condensate liquid passes through the pump output to the external system this moment, when the liquid level dropped to the lower limit liquid level of settlement, the pump stop work, corresponding electronic ball valve is closed.

Further, in order to ensure that the system is safe, energy-saving and efficient, a first electric ball valve 101 is installed on a pipeline communicated with the air inlets 4011, 4021, 4031, 4041, 4051 and 4061 of the cyclone separator, a second electric ball valve 102 is installed on a pipeline connected in parallel with a pipeline where the first electric ball valve 101 is located, a third electric ball valve 103 is installed on a pipeline communicated with the first condenser inlet 7011 of the first evaporator outlet 6012, a fourth electric ball valve 104 is installed on a connecting channel connected with the second condenser inlet 7021 of the second evaporator outlet 6022, a fifth electric ball valve 105 is installed on a connecting channel connected with the third condenser inlet 7031 of the third evaporator outlet 6032, a sixth electric ball valve 106 is installed on a pipeline communicated with the condenser outlets 7012, 7022 and 7032, a seventh electric ball valve 107 is installed on a pipeline communicated with the first sewage discharge port 8011, an eighth electric ball valve 108 is installed on a pipeline communicated with the second sewage discharge port 8025, and a ninth electric ball valve 109 is arranged on a pipeline commonly connected with the two sewage discharge ports 8011 and 8025. When the electric ball valve 109 is closed, the liquid drainage of the two liquid collection tanks is independent; when the liquid discharge pump 131 has a problem (under the conditions of overheating and non-liquid discharge of the motor and the like), the electric ball valve 109 is opened, and the liquid discharge pump 132 bears the liquid discharge of the two liquid collection tanks; when the drain pump 132 has a problem (the motor is overloaded, does not drain, etc.), the electric ball valve 109 is opened, and the drain pump 131 takes over the drain of the two liquid collecting tanks.

Furthermore, in order to facilitate control of inlet/outlet gas and condensate transportation, a first pressure sensor 201 is further installed on a pipeline between the first electric ball valve 101 and the cyclone gas inlets 4011, 4021, 4031, 4041, 4051 and 4061, a second pressure sensor 202 is installed on a pipeline between the cyclone gas outlets 4012, 4022, 4032, 4042, 4052 and the evaporator inlets 6011, 6021 and 6031, a third pressure sensor 203 is installed on a pipeline connected with the condenser outlets 7012, 7022 and 7032, a fourth pressure sensor 204 and a sixth pressure sensor 206 are installed on a connecting pipeline of the second sewage draining outlet, the fourth pressure sensor 204 is arranged on a rear pipeline of the first sewage pump 131, the sixth pressure sensor 206 is arranged on one side close to an outgoing pipeline, and a fifth pressure sensor 205 is installed on a connecting pipeline of the first sewage draining outlet, the fifth pressure sensor 205 is provided in the rear pipe of the second drain pump 132. Namely, the pressure of the whole device is monitored by six pressure sensors, a first temperature sensor 301 is installed beside the first pressure sensor 201, and a second temperature sensor 302 is also installed beside the third pressure sensor 203. The system controls the outlet temperature of the associated gas by controlling the amount of heat exchange entering the condenser.

Further, in order to facilitate detection of the liquid level and stability of the condensate, a first float liquid level switch 111, a third temperature sensor 303 and a first blowdown valve 901 are installed on the first liquid collecting tank 801, and a second float liquid level switch 112, a fourth temperature sensor 304 and a second blowdown valve 902 are installed on the second liquid collecting tank 802.

Example 2

The present embodiment is further optimized based on embodiment 1, a first backpressure valve 141 is further installed on the pipeline behind the fourth pressure sensor 204, the first backpressure valve 141 is arranged between the fourth pressure sensor 204 and the third manual ball valve 123, a second backpressure valve 142 is further installed on the pipeline behind the fifth pressure sensor 205, and the second backpressure valve 142 is arranged between the fifth pressure sensor 205 and the fourth manual ball valve 124.

Furthermore, in order to facilitate the control of the condensate after separation by the cyclone separator of the liquid collecting tank, a liquid adding valve 5 and a maintenance valve 10 are further installed on a pipeline connecting the liquid outlet 4013, 4023, 4033, 4043, 4053 and 4063 of the cyclone separator with the first liquid inlet 8021 on the second liquid collecting tank 802.

The working principle is as follows: the device utilizes an intelligent control system, firstly utilizes a cyclone separator to separate oil-water mixture in the associated gas, the associated gas which is not completely separated is cooled by an evaporator, the oil-water mixture in the associated gas is separated out, the gas-liquid separation efficiency is further improved, the associated gas after being cooled is passed through a condenser, and the heat emitted by the condenser is utilized to heat the associated gas so as to raise the temperature of the associated gas, so that the outlet temperature of the associated gas can be adjusted to safe conveying temperature, the condensate liquid generated in a working site can be automatically recovered and treated, and the condensate liquid is logically conveyed to an external conveying pipe network or a container appointed by a user by utilizing double-pump condensate discharging, thereby further improving the utilization efficiency of energy, achieving the purposes of safety, environmental protection and carbon reduction, and contributing force for realizing double-carbon target.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (9)

1. An intelligent phase-change separation hydrocarbon mixing unit is characterized by comprising a first cyclone separator (401), a second cyclone separator (402), a third cyclone separator (403), a fourth cyclone separator (404), a fifth cyclone separator (405), a sixth cyclone separator (406), a first evaporator (601), a second evaporator (602), a third evaporator (603), a first condenser (701), a second condenser (702), a third condenser (703), a first liquid collecting tank (801) and a second liquid collecting tank (802), the six cyclone separators are arranged in parallel and communicated with a second liquid collecting tank (802), the three evaporators are arranged in parallel and communicated with the second liquid collecting tank (802), the three condensers are arranged in parallel and communicated with a second liquid collecting tank (802), and the cyclone separator, the evaporator and the condensers are sequentially connected in series through pipelines.

2. The intelligent phase-change separation hydrocarbon mixing unit according to claim 1, comprising:

a first cyclonic fluid separator (401) comprising,

the first cyclone separator body (401) is used for preliminarily separating water and liquid hydrocarbon-mixed substances in the oilfield associated gas;

the gas inlet (4011) of the first cyclone separator is arranged on the side surface of the first cyclone separator (401) and is used for allowing oilfield associated gas to enter the cyclone separator;

a first cyclone separator exhaust outlet (4012) which is arranged at the top of the first cyclone separator (401), is communicated with the first cyclone separator (401), and is used for discharging primarily separated associated gas;

a first cyclone liquid discharge port (4013) which is provided at the bottom of the first cyclone (401), communicates with the first cyclone (401), and discharges the condensate separated in the first cyclone (401);

a second cyclonic fluid separator (402) comprising,

the second cyclone separator body (402) is used for preliminarily separating water and liquid hydrocarbon-mixed substances in the oilfield associated gas;

the second cyclone separator air inlet (4021) is arranged on the side surface of the second cyclone separator (402) and is used for allowing oilfield associated gas to enter the cyclone separator;

a second cyclone separator exhaust outlet (4022) which is arranged at the top of the second cyclone separator (402), is communicated with the second cyclone separator (402), and is used for discharging the primarily separated associated gas;

a second cyclone liquid discharge port (4023) which is provided at the bottom of the second cyclone (402), communicates with the second cyclone (402), and discharges the condensate separated in the second cyclone (402);

a third cyclonic fluid separator (403) comprising,

the third cyclone separator body (403) is used for preliminarily separating water and liquid hydrocarbon-mixed substances in the associated gas of the oil field;

the gas inlet (4031) of the third cyclone separator is arranged on the side surface of the third cyclone separator (403) and is used for allowing oilfield associated gas to enter the cyclone separator;

a third cyclone separator exhaust port 4032 arranged at the top of the third cyclone separator 403 and communicated with the third cyclone separator 403 for discharging the primarily separated associated gas;

a third cyclone liquid discharge port 4033 provided at the bottom of the third cyclone 403, communicating with the third cyclone 403, and discharging the condensate separated in the third cyclone 403;

a fourth cyclonic fluid separator (404) comprising,

the fourth cyclone separator body (404) is used for preliminarily separating water and liquid hydrocarbon-mixed substances in the oilfield associated gas;

the fourth cyclone separator gas inlet (4041) is arranged on the side surface of the fourth cyclone separator (404) and is used for supplying the associated gas of the oil field into the cyclone separator;

a fourth cyclone separator exhaust outlet (4042) which is arranged at the top of the fourth cyclone separator (404), is communicated with the fourth cyclone separator (404) and is used for discharging the primarily separated associated gas;

a fourth cyclone liquid discharge port (4043) which is provided at the bottom of the fourth cyclone (404), communicates with the fourth cyclone (404), and discharges the condensate separated in the fourth cyclone (404);

a fifth cyclonic fluid separator (405) comprising,

the fifth cyclone separator body (405) is used for preliminarily separating water and liquid hydrocarbon-mixed substances in the associated gas of the oil field;

the gas inlet (4051) of the fifth cyclone separator is arranged on the side surface of the fourth cyclone separator (405) and is used for allowing the oilfield associated gas to enter the cyclone separator;

a fifth cyclone separator exhaust port (4052) which is arranged at the top of the fifth cyclone separator (405), is communicated with the fifth cyclone separator (405), and is used for discharging the primarily separated associated gas;

a fifth cyclone liquid discharge port (4053) which is provided at the bottom of the fifth cyclone (405), communicates with the fifth cyclone (405), and discharges the condensate separated in the fifth cyclone (405);

a sixth cyclonic fluid separator (406) comprising,

the sixth cyclone separator body (406) is used for preliminarily separating water and liquid hydrocarbon-mixed substances in the oilfield associated gas;

the sixth cyclone separator gas inlet (4061) is arranged on the side surface of the sixth cyclone separator (406) and is used for allowing the oilfield associated gas to enter the cyclone separator;

a sixth cyclone separator exhaust outlet (4062) disposed at the top of the sixth cyclone separator (406) and communicated with the sixth cyclone separator (406), for discharging the primarily separated associated gas;

a sixth cyclone liquid discharge port (4063) which is provided at the bottom of the sixth cyclone (406), communicates with the sixth cyclone (406), and discharges the condensate separated in the sixth cyclone (406);

the six cyclone separators are connected in parallel, the air inlets of the six cyclone separators are connected in parallel with the main air inlet pipe, and the air outlets of the six cyclone separators are connected in parallel with the main exhaust pipe;

the first evaporator (601) is used for cooling the associated gas which is not separated completely, deeply separating moisture and hydrocarbon substances in a low-temperature environment, and improving the separation efficiency, and comprises:

a first evaporator inlet (6011) which is arranged at the top of the first evaporator (601) and is communicated with exhaust ports (4012, 4022, 4032, 4042, 4052 and 4062) of the cyclone separators through pipelines; and

the first evaporator outlet (6012) is arranged on one side, far away from the first evaporator inlet (6011), of the top of the first evaporator (601);

a first evaporator liquid discharge port (6013) which is provided at the bottom of the first evaporator (601) and discharges the condensate separated in the first evaporator (601);

the second evaporator (602) is used for cooling the associated gas which is not separated completely, deeply separating moisture and hydrocarbon substances in a low-temperature environment, and improving the separation efficiency, and comprises:

a second evaporator inlet (6021) arranged at the top of the second evaporator (602) and communicated with the exhaust ports (4012, 4022, 4032, 4042, 4052 and 4062) of the cyclone separators through pipelines; and

a second evaporator outlet (6022) disposed at a side of a top of the second evaporator (602) remote from the second evaporator inlet (6021);

a second evaporator drain port (6023) provided at the bottom of the second evaporator (602) for discharging the condensate separated in the second evaporator (602);

the third evaporimeter (603), is used for cooling for the not clear associated gas of separation, and degree of depth separation moisture and hydrocarbon mixture material in low temperature environment promote separation efficiency, include:

a third evaporator inlet (6031) which is arranged at the top of the third evaporator (603) and is communicated with exhaust ports (4012, 4022, 4032, 4042, 4052 and 4062) of the cyclone separators through pipelines; and

a third evaporator outlet (6032) arranged on one side of the top of the third evaporator (603) far away from the third evaporator inlet (6031);

a third evaporator liquid outlet (6033) which is arranged at the bottom of the third evaporator (603) and is used for discharging the condensate liquid separated from the third evaporator (603);

a first condenser (701) for increasing the temperature of the associated gas to adjust the outlet temperature of the associated gas to a safe transportation temperature, comprising:

a first condenser inlet (7011) arranged at the top of the first condenser (701) and communicated with an outlet (6012) of the first evaporator through a pipeline; and

a first condenser outlet (7012) disposed at a side of a top of the first condenser (701) distal from the first condenser inlet (7011),

a first condenser drain port (7013) which is provided at the bottom of the first condenser (701) and which discharges condensate in the first condenser (701);

a second condenser (702) for increasing the temperature of the associated gas to adjust the outlet temperature of the associated gas to a safe delivery temperature, comprising:

a second condenser inlet (7021) disposed at the top of the second condenser (702) and in communication with the outlet (6022) of the second evaporator via a conduit; and

a second condenser outlet (7022) disposed at a side of a top of the second condenser (702) distal from the second condenser inlet (7021),

a second condenser liquid discharge port (7023) which is provided at the bottom of the second condenser (702) and discharges condensate in the second condenser (702);

a third condenser (703) for increasing the temperature of the associated gas to adjust the outlet temperature of the associated gas to a safe delivery temperature, comprising:

a third condenser inlet (7031) arranged at the top of the third condenser (703) and communicated with an outlet (6032) of the third evaporator through a pipeline; and

a third condenser outlet (7032) disposed at a side of a top of the third condenser (703) distal from the third condenser inlet (7031),

a third condenser liquid discharge port (7033) which is provided at the bottom of the third condenser (703) and discharges condensate in the third condenser (703);

the first liquid collecting tank (801) is used for storing condensate liquid separated by an existing oil-gas separator on site; a first drain opening (8011) is arranged for draining condensate in the first liquid collecting tank (801);

a second condensate tank (802) for storing condensate separated in the cyclone separator, evaporator and condenser, comprising:

a first liquid inlet (8021) which is provided on the side surface of the second liquid collection tank (802) and communicates with liquid discharge ports (4013, 4023, 4033, 4043, 4053, 4063) of the cyclone separators (401, 402, 403, 404, 405, 406);

a second liquid inlet (8023) which is arranged on the side surface of the second liquid collecting tank (802) opposite to the first liquid inlet (8021) and is communicated with liquid outlet ports (6013, 6023, 6033) of the evaporators (601, 602, 603);

a third liquid inlet (8024) provided on the third liquid inlet (8023) side and communicating with liquid discharge ports (7013, 7023, 7033) of the condensers (701, 702, 703);

a second drain outlet (8025) for draining condensate in the second liquid collecting tank (802);

the first drainage pump (131) is communicated with a first drainage port (8011) of the first liquid collecting tank (801) and a second drainage port (8025) of the second liquid collecting tank (802);

and the second drain pump (132) is communicated with the first drain port (8011) of the first liquid collecting tank (801) and the second drain port (8025) of the second liquid collecting tank (802).

3. The intelligent phase-change separation hydrocarbon mixing unit according to claim 1, characterized in that: a first electric ball valve (101) is installed on a pipeline communicated with the gas inlets (4011, 4021, 4031, 4041, 4051 and 4061) of the cyclone separators, a second electric ball valve (102) is installed on a pipeline connected in parallel with a pipeline where the first electric ball valve (101) is located, a third electric ball valve (103) is installed on a pipeline communicated with the first condenser inlet (7011) of the first evaporator outlet (6012), a fourth electric ball valve (104) is installed on a connecting channel connected with the second condenser inlet (6022) and the second condenser inlet (7021), a fifth electric ball valve (105) is installed on a connecting channel connected with the third condenser inlet (7031) of the third evaporator outlet (6032), a sixth electric ball valve (106) is installed on a pipeline communicated with the condenser outlets (7012, 7022 and 7032), and a seventh electric ball valve (107) is installed on a pipeline communicated with the first sewage discharge port (8011), an eighth electric ball valve (108) is installed on a pipeline communicated with the second sewage draining port (8025), and a ninth electric ball valve (109) is installed on a pipeline jointly connected with the two sewage draining ports (8011 and 8025).

4. The intelligent phase-change separation hydrocarbon mixing unit according to claim 2, characterized in that: still install first pressure sensor (201) on the pipeline between first electronic ball valve (101) and cyclone separator air inlet (4011, 4021, 4031, 4041, 4051, 4061), cyclone separator gas vent (4012, 4022, 4032, 4042, 4052, 4062) with install second pressure sensor (202) on the pipeline between evaporimeter entry (6011, 6021, 6031), install third pressure sensor (203) on the pipeline that condenser export (7012, 7022, 7032) is connected fourth pressure sensor (204) and sixth pressure sensor (206) are installed to the connecting tube of second drain, fourth pressure sensor (204) set up on first drain pump (131) rear pipe, sixth pressure sensor (206) set up in the one side that is close to going out the defeated pipeline, install fifth pressure sensor (205) on the connecting tube of first drain, the fifth pressure sensor (205) is arranged on a pipeline behind the second liquid discharge pump (132).

5. The intelligent phase-change separation hydrocarbon mixing unit according to claim 4, wherein: a first temperature sensor (301) is installed beside the first pressure sensor (201), and a second temperature sensor (302) is also installed beside the third pressure sensor (203).

6. The intelligent phase-change separation hydrocarbon mixing unit according to claim 1, characterized in that: a first floating ball liquid level switch (111), a third temperature sensor (303) and a first blowdown valve (901) are mounted on the first liquid collecting tank (801), and a second floating ball liquid level switch (112), a fourth temperature transmitter (304) and a second blowdown valve (902) are mounted on the second liquid collecting tank (802).

7. The intelligent phase-change separation hydrocarbon mixing unit according to claim 4, wherein: the pipeline in front of the first liquid discharge pump (131) is provided with a first manual ball valve (121), the pipeline behind the first liquid discharge pump (131) is provided with a third manual ball valve (123), the pipeline behind the second liquid discharge pump (132) is provided with a second manual ball valve (122), and the pipeline behind the second liquid discharge pump (132) is provided with a fourth manual ball valve (124).

8. The intelligent phase-change separation hydrocarbon mixing unit according to claim 4, wherein: and a first backpressure valve (141) is further installed on the pipeline behind the fourth pressure sensor (204), the first backpressure valve (141) is arranged between the fourth pressure sensor (204) and the third manual ball valve (123), a second backpressure valve (142) is further installed on the pipeline behind the fifth pressure sensor (205), and the second backpressure valve (142) is arranged between the fifth pressure sensor (205) and the fourth manual ball valve (124).

9. The intelligent phase-change separation hydrocarbon mixing unit according to claim 1, characterized in that: and a liquid charging valve (5) and a maintenance valve (10) are further mounted on a pipeline connecting the liquid outlet (4013, 4023, 4033, 4043, 4053 and 4063) of the cyclone separator with the first liquid inlet (8021) on the second liquid collecting tank (802).

Images