CN211972099U

CN211972099U - Oil-based mud thermal analysis chamber

Info

Publication number: CN211972099U
Application number: CN202020412335.5U
Authority: CN
Inventors: 吴楠; 嵇智勇; 张义明; 孙强; 吕志勇; 片成荣; 彭东升; 潘帅; 郭强; 贾淑洁
Original assignee: Dalian Shipbuilding Industry Co Ltd
Current assignee: Dalian Shipbuilding Industry Co Ltd
Priority date: 2020-03-27
Filing date: 2020-03-27
Publication date: 2020-11-20
Anticipated expiration: 2030-03-27

Abstract

The utility model provides an oil base mud thermal analysis room, has the rectangle analysis room cabin of horizontal placing, is connected with the pipe of discharging fume above the cabin, and first baffle and second baffle divide into the three-layer with the cabin is inside, are pipeline layer, combustor layer, burning layer respectively. Two rows of natural gas pipelines and two rows of non-condensable gas pipelines are laid in the pipeline layer, two rows of burners are arranged in the burner layer and extend along the longitudinal direction of the cabin, and two spiral pushers are erected in the burner layer. One end of each of the two natural gas pipelines is connected with the two rows of burners, the other end of each of the two natural gas pipelines is connected with the natural gas inlet, one end of each of the two non-condensable gas pipelines is connected with the two rows of burners, the other end of each of the two non-condensable gas pipelines is connected with the non-condensable gas inlet, and flames sprayed by the burners are located below the spiral pusher. The natural gas is used as fuel, and the flue gas discharged by the thermal desorption chamber mainly contains carbon dioxide and water, and basically does not contain dust particles and sulfur oxides, so that the atmospheric pollution caused by heating of the thermal desorption chamber is greatly reduced.

Description

Oil-based mud thermal analysis chamber

Technical Field

The invention relates to the field of ship design and ship construction, in particular to a thermal desorption chamber for treating oil-based mud on a ship.

Background

A large amount of waste oil-based mud is generated in the oil exploitation process, so that huge burden is brought to the environment, and serious environmental pollution is caused if the waste oil-based mud is not treated. The pyrolysis method is an economic and environment-friendly way for treating the waste oil-based mud. The pyrolysis type oil engine mud thermal analysis chamber fully heats the oil-based mud in the air-isolated charging barrel, and can extract and recover oil, moisture and non-condensable gas separated after pyrolysis. The treated solid can be used as a building material or used as new slurry after being reprocessed, and the content of the carbon hydrogen is less than 1 percent, thereby meeting the requirements of national environmental protection regulations.

The traditional pyrolytic oil-based slurry treatment system adopts briquette or honeycomb briquette as fuel. Taking a pyrolytic oil-based slurry treatment system with a treatment capacity of 70 tons/day as an example, about 7 to 10 tons of coal are needed each day, and because the coal is combusted, a large amount of dust particles, sulfur dioxide and other acidic gases are generated, so that air pollution is caused while the waste gas oil engine slurry pollutants are treated.

Disclosure of Invention

In order to solve the problems, the invention provides an oil-based mud thermal analysis chamber, aiming at achieving the purposes of providing a thermal analysis chamber taking natural gas as fuel, carrying out thermal analysis on oil-based mud and avoiding environmental pollution, and the adopted technical scheme is as follows:

the utility model provides an oil base mud thermal analysis room, has the rectangle analysis room cabin of transversely placing, the cabin is airtight space, the cabin top is connected with the pipe of discharging fume be provided with first baffle and second baffle in the cabin, first baffle with the second baffle will the cabin is inside to be divided into the three-layer.

The first partition plate and the cabin wall of the cabin form a pipeline layer, the first partition plate and the second partition plate form a combustor layer, and the second partition plate and the cabin wall of the cabin form a combustion layer.

Two rows of natural gas pipelines and two rows of non-condensable gas pipelines are laid in the pipeline layer, two rows of burners are arranged in the burner layer along the longitudinal direction of the cabin, and two spiral pushers are erected in the burner layer; two natural gas pipeline one end respectively with two rows the combustor is connected, the other end and natural gas access connection, two noncondensable gas pipeline one end respectively with two rows the combustor is connected, the other end and noncondensable gas access connection, combustor spun flame is located spiral shell pusher below. The combustor burns a mixture of natural gas and non-condensable gas.

The first partition plate and the second partition plate divide the cabin into three layers, the three layers have different functions respectively, and a natural gas pipeline and a non-condensable gas pipeline are distributed in the pipeline layer, so that natural gas and non-condensable gas are conveyed to the combustor and are supplied with energy to the combustor. Burners in the burner layer operate to heat the screw propellers. The cabin is a closed space, and the combustor can well operate to heat the spiral pusher. The spiral pusher is also a closed space, so that the oil-based mud can be well pyrolyzed.

In the oil-based mud thermal desorption chamber, furthermore, the rear end of the spiral pusher is connected with an oil-based mud feeding hole, and the front end of the spiral pusher is provided with a discharging hole. The oil-based mud enters the spiral pusher through the feeding hole, the spiral pusher is heated through the burner, and the oil-based mud is pyrolyzed in the spiral pusher. Solid residues generated after thermal desorption are pushed to the discharge port through the screw rod and are discharged out of the cabin through the discharge port.

In the oil-based mud thermal analysis chamber, a motor is further arranged at the rear end of the chamber, and the motor drives a screw rod in the screw conveyor to rotate through a chain wheel and a chain. The auger is driven by a motor to operate.

In the oil-based mud thermal analysis chamber, furthermore, a circular hole is formed in the rear cabin wall of the combustion layer, the circular hole is connected with a fan, and air enters the cabin through the fan and the circular hole. When the screw rod pushes the solid residues, the fan is started to blow air into the spiral pushing device through the circular hole, the temperature of the combustion layer is controlled to be 500-1000 ℃ by adjusting the air inlet amount of the fan, and therefore the temperature in the spiral pushing device is increased to be 500-600 ℃.

In the oil-based mud thermal desorption chamber, furthermore, the spiral pusher is arranged in the combustion layer in a suspension manner, the spiral pusher is erected in the combustion layer through a pipeline, the pipeline penetrates through the top wall of the cabin, and the pipeline penetrating through the top wall of the cabin is connected with an oil-water mixed gas outlet.

In the oil-based mud thermal desorption chamber, the oil-water mixture outlet is arranged outside the cabin.

In the oil-based mud thermal desorption chamber, the oil-water mixed gas outlet is connected with a condenser. When the oil-based mud is pyrolyzed in the combustion layer, the generated oil-gas mixed gas is discharged through the oil-water mixed gas outlet and enters the condenser for the next operation after being discharged.

In the oil-based mud thermal desorption chamber, the chamber is a closed space. The closed space is beneficial to carrying out thermal analysis on the oil-based mud.

The method comprises the steps of taking natural gas as a fuel, burning the natural gas and part of recovered non-condensable gas through a burner arranged at the bottom of a thermal desorption chamber, heating the thermal desorption chamber to 500-1000 ℃, and pyrolyzing the oil-based mud pushed by a screw rod. The flue gas discharged by the thermal desorption chamber mainly contains carbon dioxide and water, and basically does not contain dust particles and sulfur oxides, so that the atmospheric pollution caused by heating of the thermal desorption chamber is greatly reduced.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic perspective view of the present invention;

wherein: 1-a resolving chamber cabin, 2-a smoke exhaust pipe, 3-a first partition plate, 4-a second partition plate, 5-a natural gas pipeline, 6-a non-condensable gas pipeline, 7-a combustor, 8-a spiral pusher, 9-a natural gas inlet, 10-a non-condensable gas inlet, 11-a feed inlet, 12-a discharge outlet, 13-a motor, 14-a fan and 15-an oil-water mixed gas outlet.

Detailed Description

The utility model provides an oil base mud thermal analysis room, has the rectangle analysis room cabin 1 of transversely placing, and the cabin top is connected with the pipe 2 of discharging fume, is provided with first baffle 3 and second baffle 4 in the cabin, and first baffle forms inclosed pipeline layer with the bulkhead in cabin, and first baffle forms inclosed combustor layer with the second baffle, and the second baffle forms inclosed burning layer with the bulkhead in cabin.

Two rows of natural gas pipelines 5 and two rows of noncondensable gas pipelines 6 are laid in the pipeline layer, two rows of combustors 7 are arranged in the combustor layer and extend along the longitudinal direction of the combustors, two closed spiral pushers 8 are erected in the combustion layer through pipelines, spiral rods are arranged in the spiral pushers, the rear ends of the spiral pushers are provided with feed inlets 11, and the front ends of the spiral pushers are provided with discharge outlets 12.

The rear end of the spiral pusher is provided with a motor 13 which drives a spiral rod in the spiral conveyor to rotate through a chain wheel and a chain. The spiral pusher is arranged in the combustion layer in a suspending mode through a pipeline, one end of the pipeline is connected with the spiral pusher, the other end of the pipeline penetrates through the top wall of the cabin and is connected with an oil-water mixed gas outlet 15, the oil-water mixed gas outlet is arranged outside the cabin, and the oil-water mixed gas outlet is connected with a condenser. One ends of the two natural gas pipelines are respectively connected with the two rows of burners, the other ends of the two natural gas pipelines are connected with the natural gas inlet 9, one ends of the two non-condensable gas pipelines are respectively connected with the two rows of burners, the other ends of the two non-condensable gas pipelines are connected with the non-condensable gas inlet 10, and flames sprayed by the burners are located below the spiral pusher. The combustor burns a mixture of natural gas and non-condensable gas.

A round hole is formed in the rear bulkhead of the combustion layer, a fan 14 is connected to the round hole, and the fan well controls the temperature in the combustion layer and the temperature in the spiral pusher.

The oil-based mud enters the spiral pusher through the feeding hole, pyrolysis is carried out in the spiral pusher, solid residues generated by pyrolysis are discharged through the discharging hole, and oil-gas mixed gas is discharged through the oil-water mixed gas outlet, enters the condenser and is processed in the next step.

Compared with the prior art that the briquette or honeycomb briquette is adopted, the flue gas generated by burning the natural gas does not contain dust particles, sulfur oxides and the like, the main components of the flue gas generated by burning the natural gas are carbon dioxide and water, the emission is clean and more environment-friendly, and the flue gas does not contain dust particles and sulfur oxides, so that a wet dust collector and a bag-type dust collector are not required to be installed for carrying out the post-treatment of the flue gas. Meanwhile, the combustion heat value of the natural gas is 2 times of that of coal, and the gas combustion efficiency is far higher than that of solid coal, so that the natural gas is more economical and practical.

The invention divides the three cabins with independent functions by two layers of clapboards, thereby not only ensuring the safety isolation among the cabins, but also improving the convenience of the maintenance of the components in the cabins.

Claims

1. The oil-based mud thermal analysis chamber is characterized by comprising a rectangular analysis chamber cabin (1) which is transversely arranged, a smoke exhaust pipe (2) is connected above the cabin, a first partition plate (3) and a second partition plate (4) are arranged in the cabin, and the first partition plate and the second partition plate divide the interior of the cabin into three layers;

the first partition plate and the bottom wall of the cabin form a pipeline layer, the first partition plate and the second partition plate form a burner layer, and the second partition plate and the top wall of the cabin form a combustion layer;

two rows of natural gas pipelines (5) and two rows of non-condensable gas pipelines (6) are laid in the pipeline layer, two rows of burners (7) are arranged in the burner layer along the longitudinal direction of the cabin, and two spiral pushers (8) are erected in the burner layer;

two natural gas pipeline one end is connected with two rows respectively the combustor, and the other end is connected with natural gas inlet (9), two noncondensable gas pipeline one end is connected with two rows respectively the combustor, and the other end is connected with noncondensable gas import (10), combustor spun flame is located spiral pusher below.

2. The oil-based mud thermal desorption chamber of claim 1, wherein the rear end of the auger is connected with an oil-based mud inlet (11), and the front end of the auger is provided with an outlet (12).

3. The oil-based mud thermal desorption chamber of claim 1, wherein the rear end of the chamber is provided with a motor (13) which drives a screw rod in the auger to rotate through a chain wheel and a chain.

4. The oil-based mud thermal desorption chamber of claim 1, wherein said combustion layer aft bulkhead defines a circular opening, said circular opening being connected to a fan (14), air being introduced into said chamber through said fan and said circular opening.

5. The oil-based mud thermal desorption chamber of claim 1, wherein the auger is suspended in the combustion layer, the auger is mounted in the combustion layer through a pipe, the pipe penetrates through the top wall of the chamber, and the pipe penetrating through the top wall of the chamber is connected with an oil-water mixture outlet (15).

6. The oil-based mud thermal desorption chamber of claim 5, wherein said miscella outlet is disposed outside said chamber.

7. The oil-based mud thermal desorption chamber of claim 5, wherein said miscella outlet is connected to a condenser.

8. The oil-based mud thermal desorption chamber of claim 1, wherein said chamber is an enclosed space.