CN204644083U - Sludge in Oilfields treatment unit up to standard - Google Patents

Abstract

The utility model discloses Sludge in Oilfields treatment unit up to standard, comprise the first oily sludge transfer lime, PRIMARY STIRRING tank, second oily sludge transfer lime, one-stage water wash stirred pot, first sludge liquid mixture transfer lime, secondary washing stirred pot, heat transfer fluid feedway, first heat transfer fluid transfer lime, second heat transfer fluid transfer lime, 3rd heat transfer fluid transfer lime, chemicals dosing plant, first drug-transmitting pipe, second drug-transmitting pipe, second sludge liquid mixture transfer lime, wet cyclone, centrifuge dehydration sludge pump, sump oil transfer lime, sump oil storage tank, sewage conveying tube and sewage storage tank.The utility model treatment time is short, good separating effect, and technique is simple, solves the large and technical problem of contaminate environment of Sludge in Oilfields amount, and can reclaim and recycling isolated oil, water and mud.

Description

Oilfield oily sludge standard treatment device

technical field

The utility model relates to crude oil separation equipment, in particular to a standard treatment device for oily sludge in oil fields.

Background technique

At present, oily sludge is mainly a kind of component and its complex stable suspended emulsion system produced in the process of oil extraction, gathering and processing, and is one of the main pollution sources of oil production. Its composition includes a large amount of aged crude oil, wax, asphaltenes, colloids, suspended solids, salts, corrosion products and various treatment agents (flocculants, corrosion inhibitors, etc.) added in the production process. Oily sludge is produced in a large amount and its volume is relatively large, so it cannot be discharged directly, otherwise it will cause serious pollution to the surrounding soil, water and air, and pose a huge threat to human health. Therefore, the oil generated by oil fields and refineries Oily sludge is also classified as hazardous solid waste.

In recent years, the treatment of oily sludge has attracted much attention, and the treatment of oily sludge has always been a major problem in oil fields. Many countries have carried out research on treatment technology and formed some mature technologies and ideas. The relatively mature treatment processes in foreign countries are mechanical dehydration process, high-temperature treatment process and biological treatment process. -Mechanical dehydration technology and APEX technology of Canada MG Company have been practically applied in industry, but there is a situation of poor adaptability of pretreatment process and equipment, high temperature treatment process consumes a lot of energy, and may cause secondary air pollution However, the biological method takes a long time and the cost of the solvent extraction process is high, so far it has not been practically applied to the treatment of oily sludge in oilfields. Although there are many methods to deal with oily sludge, they have not been widely used due to high cost and incomplete recycling. Direct burial after simple treatment is still commonly used in domestic oil fields, which not only pollutes the environment but also causes waste of resources. .

Utility model content

The purpose of the utility model is to provide a standard treatment device for oily sludge in oil fields, which has short processing time, good separation effect, simple process, solves the technical problems of large amount of oily sludge in oil fields and pollutes the environment, and can treat the separated oil, Water and mud are recycled and reused.

The purpose of this utility model is achieved in the following way: a treatment device for oily sludge reaching the standard in an oil field, comprising a first oily sludge conveying pipe, a primary stirring tank, a second oily sludge conveying pipe, a primary washing stirring tank, a first sludge Mud-fluid mixture delivery pipe, secondary washing mixing tank, heat transfer fluid supply device, first heat transfer fluid delivery pipe, second heat transfer fluid delivery pipe, third heat transfer fluid delivery pipe, drug dosing device, first drug delivery Pipe, the second drug delivery pipe, the second sludge liquid mixture delivery pipe, hydrocyclone separator, centrifugal dehydration sludge pump, sewage oil delivery pipe, sewage oil storage tank, sewage delivery pipe and sewage storage tank; the first oily sewage The mud conveying pipe passes through the primary stirring tank, the second oily sludge conveying pipe, the primary water washing stirring tank, and the first sludge liquid mixture conveying pipe to connect with the inlet of the secondary washing stirring tank and the outflow of the heat-carrying fluid supply device. The port is connected to the first oily sludge delivery pipe through the first heat transfer fluid delivery pipe, connected to the second oily sludge delivery pipe through the second heat transfer fluid delivery pipe and connected to the first sludge liquid mixture through the third heat transfer fluid delivery pipe The delivery pipe, the medicine outlet of the dosing device is connected to the second oily sludge delivery pipe through the first medicine delivery pipe and the first sludge liquid mixture delivery pipe through the second medicine delivery pipe, and the outlet of the secondary washing mixing tank The inlet of the hydrocyclone is connected to the upper part of the hydrocyclone through the second sludge liquid mixture delivery pipe, and the oil outlet of the hydrocyclone is connected to the sewage oil storage through the sewage oil delivery pipe. The water outlet in the middle of the tank is connected to the sewage storage tank through the sewage conveying pipe, and the mud outlet in the bottom is connected to the mud inlet of the centrifugal dewatering sludge pump.

The application process of the utility model is divided into three steps: the first step is the pretreatment stage, and the oily sludge is homogeneously fluidized in the primary mixing tank by adding water and passed through a heat-carrying fluid supply device that can release steam and hot water or The electric heating device heats it. The second step is the two-stage water washing stage. The oily sludge is pumped into the two-stage water washing mixing tank, and then the corresponding water washing treatment agent is added by the dosing device to elute the crude oil attached to the surface of the oily sludge. The third step is the sedimentation and separation stage. The oily sludge after the two-stage washing treatment is separated into three phases of oil, water and mud in the hydrocyclone (sedimentation separation tank), and the water is recycled after treatment. After the bottom sludge is centrifuged and dehydrated, the oil content in the sludge is less than 2%, and the treated sludge can be directly used to make filter materials, building materials, etc., to achieve sludge reduction and resource utilization. The application process of the utility model is simple, does not need to occupy a large amount of land resources, is simple in operation, low in cost, good in treatment effect, and can reach the standard for treating oily sludge in oilfields. The utility model adopts the water washing method to treat the oily sludge in the oil field, which consumes less energy, and the waste oil and sewage separated after washing can be recycled and processed, and the sludge can be buried after being dehydrated and dried by the centrifugal dehydration mud pump, so as to realize the treatment The three-phase reduction of the separated oil and cement has short processing time, good separation effect and simple process, which solves the technical problem of large amount of oily sludge in the oil field and pollutes the environment, and can recycle the separated oil, water and mud and resource utilization.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the utility model.

Detailed ways

An oilfield oily sludge standard treatment device, as shown in Figure 1, includes a first oily sludge delivery pipe 1, a primary stirring tank 2, a second oily sludge delivery pipe 3, a primary washing mixing tank 4, a first sewage sludge Mud-fluid mixture delivery pipe 7, secondary washing mixing tank 8, heat transfer fluid supply device 15, first heat transfer fluid delivery pipe 13, second heat transfer fluid delivery pipe 14, third heat transfer fluid delivery pipe 16, chemical dosing Device 6, the first drug delivery pipe 5-1, the second drug delivery pipe 5-2, the second sludge liquid mixture delivery pipe 9, the hydrocyclone 10, the centrifugal dehydration sludge pump 17, the sewage oil delivery pipe 11, Sewage oil storage tank 12, sewage delivery pipe 18 and sewage storage tank 19; the first oily sludge delivery pipe 1 passes through the primary stirring tank 2, the second oily sludge delivery pipe 3, the primary washing mixing tank 4, the first sewage The mud-liquid mixture conveying pipe 7 communicates with the inlet of the secondary washing mixing tank 8, and the outlet of the heat-carrying fluid supply device 15 communicates with the first oily sludge conveying pipe 1 through the first heat-carrying fluid conveying pipe 13, and passes through the second The heat-carrying fluid delivery pipe 14 communicates with the second oily sludge delivery pipe 3 and communicates with the first sludge liquid mixture delivery pipe 7 through the third heat-carrying fluid delivery pipe 16, and the medicine outlet of the dosing device 6 passes through the first medicine delivery pipe 5-1 is connected to the second oily sludge delivery pipe 3 and is connected to the first sludge liquid mixture delivery pipe 7 through the second drug delivery pipe 5-2, and the outlet of the secondary washing mixing tank 8 passes through the second sludge liquid mixture The delivery pipe 9 communicates with the inlet of the hydrocyclone 10 at its upper part when it is working, and the oil outlet of the hydrocyclone 10 at its upper part is connected with the dirty oil storage tank 12 through the dirty oil delivery pipe 11 when it is working. The water outlet located in the middle is connected to the sewage storage tank 19 through the sewage conveying pipe 18 and the mud outlet located at the bottom is connected to the mud inlet of the centrifugal dewatering sludge pump 17 .

Claims (1)

1. a Sludge in Oilfields treatment unit up to standard, it is characterized in that: comprise the first oily sludge transfer lime (1), PRIMARY STIRRING tank (2), second oily sludge transfer lime (3), one-stage water wash stirred pot (4), first sludge liquid mixture transfer lime (7), secondary washing stirred pot (8), heat transfer fluid feedway (15), first heat transfer fluid transfer lime (13), second heat transfer fluid transfer lime (14), 3rd heat transfer fluid transfer lime (16), chemicals dosing plant (6), first drug-transmitting pipe (5-1), second drug-transmitting pipe (5-2), second sludge liquid mixture transfer lime (9), wet cyclone (10), centrifuge dehydration sludge pump (17), sump oil transfer lime (11), sump oil storage tank (12), sewage conveying tube (18) and sewage storage tank (19), first oily sludge transfer lime (1) is successively by PRIMARY STIRRING tank (2), second oily sludge transfer lime (3), one-stage water wash stirred pot (4), first sludge liquid mixture transfer lime (7) is communicated with the inflow port of secondary washing stirred pot (8), the head piece that goes out of heat transfer fluid feedway (15) is communicated with the first oily sludge transfer lime (1) by the first heat transfer fluid transfer lime (13), be communicated with the second oily sludge transfer lime (3) by the second heat transfer fluid transfer lime (14) and be communicated with the first sludge liquid mixture transfer lime (7) by the 3rd heat transfer fluid transfer lime (16), the medicine outlet of chemicals dosing plant (6) is communicated with the second oily sludge transfer lime (3) by the first drug-transmitting pipe (5-1) and is communicated with the first sludge liquid mixture transfer lime (7) by the second drug-transmitting pipe (5-2), the head piece that goes out of secondary washing stirred pot (8) is communicated with by the second sludge liquid mixture transfer lime (9) inflow port that wet cyclone (10) is located thereon portion when its work, wet cyclone (10) is located thereon portion oil outlet when its work is communicated with sump oil storage tank (12) by sump oil transfer lime (11), the water outlet be positioned in the middle part of it is communicated with sewage storage tank (19) by sewage conveying tube (18) and is positioned at the mud inlet of mud mouth connection centrifuge dehydration sludge pump (17) of its foot.