阅读说明：本技术 撬装式原油电脱盐装置 (Skid-mounted crude oil electric desalting device ) 是由 牛鲁娜 韩磊 张艳玲 刘小辉 屈定荣 于 2018-06-06 设计创作，主要内容包括：本发明提供了一种撬装式原油电脱盐装置,包括电脱盐系统和电脱盐控制屋,电脱盐系统包括撬座,撬座上安装有电脱盐罐,电脱盐罐上设置有变压器部分、管线管路部分和配套构件部分,电脱盐控制屋内设置有PLC控制系统。电脱盐罐和其他集成在撬座上的设备通过螺栓固定在撬座上形成一个整体的电脱盐系统,在使用的时候,只要吊着电脱盐罐或者撬装基础就能实现整个电脱盐系统模块的移动,而电脱盐控制屋也可单独吊装,放置于电脱盐系统模块附近,便于技术人员现场操作及监控装置运行情况。该发明是一种整合型的电脱盐装置,防爆、占地小、装卸及操作管理方便,易于清理维护,脱盐效果好,且能够实现电脱盐工艺操作自动控制和数据分析的全过程。(The invention provides a skid-mounted crude oil electric desalting device which comprises an electric desalting system and an electric desalting control room, wherein the electric desalting system comprises a prying seat, an electric desalting tank is mounted on the prying seat, a transformer part, a pipeline part and a matched component part are arranged on the electric desalting tank, and a PLC control system is arranged in the electric desalting control room. The electric desalting tank and other equipment integrated on the prying seat are fixed on the prying seat through bolts to form an integral electric desalting system, when the electric desalting system is used, the whole electric desalting system module can be moved as long as the electric desalting tank is hung or the prying foundation is installed, the electric desalting control room can be independently hoisted and placed near the electric desalting system module, and the field operation of technical personnel and the operation condition of the monitoring device are facilitated. The integrated electric desalting device disclosed by the invention is explosion-proof, small in occupied area, convenient to assemble, disassemble, operate and manage, easy to clean and maintain, good in desalting effect, and capable of realizing the whole process of automatic control and data analysis of electric desalting process operation.)

1. Skid-mounted crude oil electric desalting device, its characterized in that, including electric desalting system and electric desalting control room, electric desalting system and electric desalting control room all adopt explosion-proof design, and electric desalting system includes the sled seat, installs the electric desalting jar on the sled seat, is provided with transformer part, pipeline part and supporting component part on the electric desalting jar, be provided with PLC control system in the electric desalting control room, transformer part, pipeline part and supporting component part all are connected with PLC control system electricity.

2. The skid-mounted crude oil electric desalting device according to claim 1, wherein the bottom of the electric desalting tank is provided with an oil inlet and a water outlet, the pipeline part comprises an oil inlet pipeline and a water outlet pipeline, the oil inlet pipeline is connected with the oil inlet, and the water outlet pipeline is connected with the water outlet;

A raw oil pump is arranged on the oil inlet pipeline, the raw oil pump is connected with a mixer, a mixing valve is arranged on the mixer, and a first temperature sensor and a first pressure sensor are also arranged on the oil inlet pipeline; a boundary regulating valve is arranged on the drainage pipeline;

And the mixing valve, the first temperature sensor, the first pressure sensor and the interface level regulating valve are all electrically connected with the PLC control system.

3. The skid-mounted crude oil electric desalting device according to claim 2, wherein an oil outlet, a drain port, a safety valve and oil-water interface monitoring equipment are arranged at the top of the electric desalting tank, and the oil-water interface monitoring equipment is a radio frequency admittance meter;

The safety valve and the oil-water interface monitoring equipment are electrically connected with the PLC control system;

And the PLC control system automatically controls the opening of the interface regulating valve according to the monitoring result of the oil-water interface monitoring equipment.

4. The skid-mounted crude oil electric desalting device according to claim 1, wherein the mating component part comprises an electrode plate, a second temperature sensor and a second pressure sensor, the electrode plate is arranged inside the electric desalting tank, and the second temperature sensor and the second pressure sensor are both arranged at the top of the electric desalting tank;

And the second temperature sensor and the second pressure sensor are both electrically connected with the PLC control system.

5. The skid-mounted crude oil electric desalting device according to claim 4, wherein the transformer part comprises an alternating current desalting transformer and a transformer controller, the electric desalting transformer is mounted at the top of the electric desalting tank, and the transformer controller is mounted on the skid seat;

The transformer controller is electrically connected with the alternating current desalting transformer to control the output voltage of the alternating current desalting transformer, and the alternating current desalting transformer introduces high voltage electricity to the electrode plates in the electric desalting tank through the high voltage electricity introducing structure.

6. The skid-mounted crude oil electric desalting device according to claim 4, wherein a plurality of electrode plates are vertically arranged at equal intervals, and the electrode plates are hung at the upper inner part of the electric desalting tank.

7. the skid-mounted crude oil electric desalting device according to claim 1, further comprising a workshop DCS system and an analysis and test system, wherein the PLC control system is electrically connected with the workshop DCS system and the analysis and test system respectively.

8. The skid-mounted electric crude oil desalting device according to claim 1, wherein a sewage draining outlet is further arranged at the bottom of the electric desalting tank.

9. The skid-mounted crude oil electric desalting device according to claim 1, wherein an oil inlet distributor is arranged below the inside of the electric desalting tank.

10. The skid-mounted crude oil electric desalting device according to claim 7, wherein the analysis and test system can automatically calculate the desalting rate and the dewatering rate and give curves of the desalted salt content and the water content along with time.

Technical Field

The invention relates to the field of crude oil electric desalting, in particular to a skid-mounted crude oil electric desalting device.

Background

The electric desalting is an important link in the crude oil processing process, and along with the improvement of the heavy and inferior degree of the extracted crude oil, the desalting and dewatering efficiency of the crude oil is reduced in many oil refining enterprises, so that the normal production and the economic benefit are greatly influenced. At present, crude oil electric desalting devices are fixedly installed, so that the installation efficiency is low, the occupied space is large, the ground solidification degree is required, auxiliary equipment such as electrical instruments are distributed and dispersed, the configuration of pipelines, control circuits and the like is various, and the difficulty is also large if scale change or process optimization modification is carried out. The device mainly depends on technicians to manually adjust operation parameters by analyzing the desalting and dewatering effects or according to process requirements, and has no self-control. The prior related art relates to skid-mounted structural devices, for example, Chinese patent CN104593045B discloses a skid-mounted crude oil dehydration device, provides a skid-mounted three-phase separator device, integrates the dehydration and degassing functions of oil well produced liquid, is oil field produced liquid dehydration equipment, and is not suitable for an electric desalting process of oil refining enterprises; chinese patent CN103160432 discloses a skid-mounted pump set device, CN104390127B discloses a filling process of an LNG skid-mounted filling station, and skid-mounted structure devices are also provided respectively, but are not related to the field of crude oil electric desalting processing, and related technologies of electric desalting automatic control devices are not reported. Therefore, it is necessary to develop a skid-mounted automatic control device which is suitable for on-site use, convenient to mount and dismount and easy to clean and maintain.

disclosure of Invention

The invention provides a skid-mounted crude oil electric desalting device, aiming at the problems of low installation efficiency, large occupied space, poor automatic control and the like of the conventional fixed electric desalting device.

The invention adopts the following technical scheme:

Skid-mounted crude oil electric desalting device, including electric desalting system and electric desalting control room, electric desalting system and electric desalting control room all adopt explosion-proof design, and electric desalting system includes the sled seat, installs the electric desalting jar on the sled seat, is provided with transformer part, pipeline part and supporting component part on the electric desalting jar, be provided with PLC control system in the electric desalting control room, transformer part, pipeline part and supporting component part all are connected with PLC control system electricity.

Preferably, the bottom of the electric desalting tank is provided with an oil inlet and a water outlet, the pipeline part comprises an oil inlet pipeline and a water outlet pipeline, the oil inlet pipeline is connected with the oil inlet, and the water outlet pipeline is connected with the water outlet;

a raw oil pump is arranged on the oil inlet pipeline, the raw oil pump is connected with a mixer, a mixing valve is arranged on the mixer, and a first temperature sensor and a first pressure sensor are also arranged on the oil inlet pipeline; a boundary regulating valve is arranged on the drainage pipeline;

And the mixing valve, the first temperature sensor, the first pressure sensor and the interface level regulating valve are all electrically connected with the PLC control system.

Preferably, the top of the electric desalting tank is provided with an oil outlet, a drain port, a safety valve and oil-water interface monitoring equipment, and the oil-water interface monitoring equipment is a radio frequency admittance instrument;

the safety valve and the oil-water interface monitoring equipment are electrically connected with the PLC control system;

And the PLC control system automatically controls the opening of the interface regulating valve according to the monitoring result of the oil-water interface monitoring equipment.

Preferably, the kit part comprises an electrode plate, a second temperature sensor and a second pressure sensor, the electrode plate is arranged inside the electric desalting tank, and the second temperature sensor and the second pressure sensor are both arranged at the top of the electric desalting tank;

and the second temperature sensor and the second pressure sensor are both electrically connected with the PLC control system.

Preferably, the transformer part comprises an alternating current desalting transformer and a transformer controller, the electric desalting transformer is arranged at the top of the electric desalting tank, and the transformer controller is arranged on the prying seat;

the transformer controller is electrically connected with the alternating current desalting transformer to control the output voltage of the alternating current desalting transformer, and the alternating current desalting transformer introduces high voltage electricity to the electrode plates in the electric desalting tank through the high voltage electricity introducing structure.

preferably, the electrode plate has a plurality of electrode plates, the plurality of electrode plates are vertically arranged at equal intervals, and the electrode plates are hung at the inner upper part of the electric desalting tank.

Preferably, the system further comprises a plant DCS system and an analysis and test system, and the PLC control system is electrically connected with the plant DCS system and the analysis and test system respectively.

Preferably, the bottom of the electric desalting tank is also provided with a sewage draining outlet.

Preferably, an oil inlet distributor is arranged below the inside of the electric desalting tank.

Preferably, the analysis and assay system can automatically calculate the salt rejection rate and the dehydration rate, and give the curve of the salt content and the water content after dehydration along with the time.

The invention has the beneficial effects that:

compared with the prior art, the skid-mounted crude oil electric desalting device comprises an electric desalting system and an electric desalting control room, wherein the electric desalting tank and other equipment integrated on a prying seat are fixed on the prying seat through bolts to form the integral electric desalting system, when the skid-mounted crude oil electric desalting device is used, the whole electric desalting system module can be moved as long as the electric desalting tank or a skid-mounted foundation is hung, and the electric desalting control room can be independently hung and placed near the electric desalting system module, so that technical personnel can conveniently operate and monitor the operation condition of the device on site. All modules of the electric desalting system and the electric desalting control room in the device adopt explosion-proof design and have the function of automatic control of drainage. The integrated electric desalting device is explosion-proof, small in occupied area, convenient to assemble, disassemble, operate and manage, easy to clean and maintain, and capable of achieving the whole process of automatic control of electric desalting process operation and data analysis.

Drawings

FIG. 1 is a schematic diagram of an electrical desalination system.

FIG. 2 is a schematic view of an electric desalting control room.

Detailed Description

The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:

With reference to fig. 1 and 2, the skid-mounted crude oil electric desalting device comprises an electric desalting system and an electric desalting control room, wherein the electric desalting system and the electric desalting control room are both designed to be explosion-proof.

the electric desalting system comprises a prying seat 1, an electric desalting tank 2 is mounted on the prying seat, and a transformer part, a pipeline part and a matched component part are arranged on the electric desalting tank.

The electric desalting control room is internally provided with a PLC control system 3, and the transformer part, the pipeline part and the matched component part are all electrically connected with the PLC control system.

The electric desalting control room has explosion-proof safety, an illuminating system is further arranged in the electric desalting control room, and the illuminating system and the PLC control system 3 are all explosion-proof.

The bottom of the electric desalting tank 2 is provided with an oil inlet 4 and a water outlet 5, the pipeline part comprises an oil inlet pipeline and a water outlet pipeline, the oil inlet pipeline is connected with the oil inlet 4, and the water outlet pipeline is connected with the water outlet 5.

An oil inlet distributor 23 is arranged below the inside of the electric desalting tank 2, so that fluid in the tank can be uniformly distributed, and the desalting and dewatering effects are improved.

The oil inlet pipeline is provided with a raw oil pump 6, the raw oil pump is connected with a mixer 7, the mixer is provided with a mixing valve, and the oil inlet pipeline is also provided with a first temperature sensor 8 and a first pressure sensor 9.

A boundary regulating valve 10 is arranged on the pipeline of the water drain pipeline.

the mixing valve, the first temperature sensor 8, the first pressure sensor 9 and the interface level regulating valve 10 are all electrically connected with the PLC control system 3.

The transformer part comprises an alternating current desalting transformer 11 and a transformer controller 12, the electric desalting transformer 11 is installed at the top of the electric desalting tank 2, and the transformer controller 12 is installed on the prying seat 1.

The transformer controller 12 is electrically connected to the ac desalination transformer 11 to control the output voltage of the ac desalination transformer, and the ac desalination transformer introduces high voltage electricity to the electrode plates 14 in the electric desalination tank through the high voltage electricity introduction structure 13.

the matched component part comprises an electrode plate 14, a second temperature sensor 15 and a second pressure sensor 16, wherein the electrode plate 14 is an equidistant vertical electrode plate, and the electrode plate is hung at the inner upper part of the electric desalting tank. The second temperature sensor and the second pressure sensor are both arranged at the top of the electric desalting tank.

The second temperature sensor can measure a temperature value within the electrical desalination tank and the second pressure sensor can measure a pressure value within the electrical desalination tank.

and the second temperature sensor and the second pressure sensor are both electrically connected with the PLC control system.

The top of the electric desalting tank is provided with an oil outlet 17, a drain port 18, a safety valve 19 and an oil-water interface monitoring device 20, and the oil-water interface monitoring device is a radio frequency admittance instrument.

The bottom of the electric desalting tank is also provided with a drain outlet 21, and the drain outlet 21 is used for discharging sludge when the electric desalting tank is cleaned.

The safety valve 19 and the oil-water interface monitoring device 20 are electrically connected with the PLC control system.

The PLC control system automatically controls the opening of the interface regulating valve 10 according to the monitoring result of the oil-water interface monitoring equipment, and automatic drainage control is realized.

The skid-mounted crude oil electric desalting device further comprises a workshop DCS (distributed control System) 22 and an analysis and test system, and the PLC control system is electrically connected with the workshop DCS and the analysis and test system respectively.

The PLC control system can receive real-time data such as temperature, pressure, oil-water boundary level and the like and send the data to a workshop DCS system, so that real-time transmission and monitoring of the data are realized.

The PLC control system is also connected with an analysis and test system, and can obtain test results of the salt content, the water content and the oil content of the drained water of the crude oil before and after electric desalting, automatically analyze the change trends of the desalting rate, the dehydration rate, the salt content and the water content along with time, enable technicians to master the electric desalting effect at any time, and adjust the process operation conditions in time.

the skid-mounted crude oil electric desalting device provided by the invention has the working process that:

the crude oil pump 6 is opened, the crude oil is mixed by the mixer 7 and then enters the electric desalting tank 2 through an oil inlet pipeline, the alternating current desalting transformer 11 is arranged through the transformer controller 12 to output proper desalting voltage, the alternating current desalting transformer introduces high voltage electricity to the electrode plates in the electric desalting tank through the high voltage electricity introduction structure 13, under the action of the electrode plates, water drops condense and settle and are divided into an upper layer and a lower layer with the crude oil, the PLC control system 3 receives real-time parameters of the second temperature sensor, the second pressure sensor and the oil-water boundary monitoring equipment, the salt content, the water content and the drainage oil content data of the dehydrated crude oil are analyzed, the opening degrees of a boundary regulating valve and a mixing valve are adjusted through the PLC control system, and the parameters and the desalting and dehydrating effects are ensured to be in a.

It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.