CN215029912U

CN215029912U - High concentration coal slurry deironing system

Info

Publication number: CN215029912U
Application number: CN202120073423.1U
Authority: CN
Inventors: 王耀; 高建民; 王伟; 刘明新; 刘亮亮
Original assignee: Inner Mongolia Boda Field Chemical Co ltd
Current assignee: Inner Mongolia Boda Field Chemical Co ltd
Priority date: 2021-01-12
Filing date: 2021-01-12
Publication date: 2021-12-07
Anticipated expiration: 2031-01-12

Abstract

The utility model discloses a high-concentration coal slurry deironing system, which comprises an electromagnetic iron remover, a waste iron collecting device, a coal slurry collecting device, a first pipeline and a second pipeline, wherein a feed inlet of the electromagnetic iron remover is connected with a discharge outlet of a coal mill through the first pipeline, the discharge outlet of the electromagnetic iron remover is connected with one end of the second pipeline, and the other end of the second pipeline is respectively connected with the waste iron collecting device and the coal slurry collecting device; the first pipeline is provided with a first valve, the communication position of the second pipeline and the scrap iron collecting device is provided with a second valve, and the communication position of the second pipeline and the coal slurry collecting device is provided with a third valve. The utility model can effectively remove the scrap iron in the raw material coal by installing the electromagnetic iron remover on the outlet pipeline of the coal mill, and avoid the scrap iron in the raw material coal and the miscellaneous iron generated by the abrasion of the steel bar from damaging equipment such as a high-pressure coal slurry pump, a gasification furnace and the like; meanwhile, the iron absorption time of the electromagnetic iron remover is adjustable, and the scrap iron can be conveniently and regularly removed.

Description

High concentration coal slurry deironing system

Technical Field

The utility model relates to a coal slurry production facility technical field, especially a high concentration coal slurry deironing system.

Background

Coal water slurry is a low-pollution, high-efficiency, pipelineable, oil-substituted coal-based fluid fuel obtained by physical processing of about 65 mass% coal, 34 mass% water and 1 mass% additives. It not only maintains the original physical characteristics of coal, but also has the fluidity and stability as petroleum, can be stored, transported by pipelines and atomized and combusted as oil easily, and is called as liquid coal product. The coal water slurry changes the traditional combustion mode of coal, the combustion efficiency of the coal water slurry can reach more than 95 percent, and the discharge amount of sulfur dioxide and nitrogen oxide and the concentration of smoke dust meet the environmental protection requirement, so the coal water slurry is very widely applied and shows great environmental protection and energy saving advantages.

China is a big coal country, reserves are abundant, however, in the process of preparing coal water slurry from coal, as miscellaneous iron generally exists in coal raw materials, the miscellaneous iron can affect subsequent processing and production equipment such as a high-pressure coal slurry pump, a gasification furnace and the like, so that how to provide a system capable of realizing continuous and efficient iron removal is a problem which needs to be solved urgently at present.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a high concentration coal slurry de-ironing system to solve the problems in the prior art.

In order to achieve the above purpose, the technical scheme of the utility model is that:

a high-concentration coal slurry iron removal system comprises an electromagnetic iron remover, a waste iron collecting device, a coal slurry collecting device, a first pipeline and a second pipeline, wherein a feed inlet of the electromagnetic iron remover is connected with a discharge outlet of a coal mill through the first pipeline, the discharge outlet of the electromagnetic iron remover is connected with one end of the second pipeline, and the other end of the second pipeline is respectively connected to the waste iron collecting device and the coal slurry collecting device; the first pipeline is provided with a first valve, the communication part of the second pipeline and the scrap iron collecting device is provided with a second valve, and the communication part of the second pipeline and the coal slurry collecting device is provided with a third valve.

Preferably, the first pipeline is further connected with a flushing pipeline, and a fourth valve is installed at the communication position of the first pipeline and the flushing pipeline.

Preferably, still include the PLC controller, the electromagnetism de-ironing separator the first valve the second valve the third valve with the fourth valve all with PLC controller signal connection, the PLC controller is used for controlling the electromagnetism de-ironing separator the first valve the second valve the third valve the opening and closing of fourth valve.

Preferably, the first valve and the second valve are electric gate valves; the third valve and the fourth valve are electric ball valves.

Preferably, the first pipeline comprises an upper pipeline, a middle pipeline and a lower pipeline which are connected in sequence, and the upper pipeline is a concentric reducer with gradually reduced pipe diameter from top to bottom.

Preferably, the middle pipeline is a tee joint, an upper connector of the middle pipeline is connected with the upper pipeline, a lower connector of the middle pipeline is connected with the lower pipeline, a side connector of the middle pipeline is connected with a bypass pipeline, and the other end of the bypass pipeline is connected to the coal slurry collecting device; the first valve is mounted on the lower pipeline.

Preferably, a certain gradient is formed on the bypass pipeline close to one end of the side interface of the tee joint.

Preferably, a first observation port is arranged on the bypass pipeline close to one end of the side interface of the tee joint

Preferably, a second observation port is arranged at the inlet of the electromagnetic iron remover.

The utility model has the advantages that: the utility model discloses in, the inventor discovers through the accumulated experience of many years, when raw materials coal grinds in the coal pulverizer, because the rod iron wearing and tearing and the miscellaneous indisputable that itself exists in the coal, make to exist needle-like iron, slice iron in the coal pulverizer export, these will influence the steady operation of the high pressure coal stuff pump that uses the rubber hose, and foam iron melts through high temperature combustion after entering the gasifier along with the coal oar, can attach to the gasifier firebrick wall, increased the erode, influence the stove brick life-span, the molten iron can flow in along the brickwork joint and solidify simultaneously, serious influence the heat-proof quality of resistant firebrick, and can form the iron ring at the bottom of a cone brick brickwork joint in its bottom of a cone brick demolition process, iron can't demolish with the brick is integrated, can only use the angle mill cutting, a large amount of work has been increased; therefore, the electromagnetic iron remover is arranged on the outlet pipeline of the coal mill, so that the waste iron in the raw material coal can be effectively removed, the iron absorption time of the electromagnetic iron remover can be adjusted, the electromagnetic iron remover is in an excitation state in an initial state, the iron removal process can be normally carried out for a period of time, the first valve and the third valve are opened, and the second valve is in a closed state; after deironing for a period of time, the electromagnetic deironing device can be switched to an iron unloading process, namely a non-excitation state, at the moment, the first valve and the third valve are closed, the second valve is opened, and then the scrap iron sucked in the electromagnetic deironing device can be conveniently collected in the scrap iron collecting device.

Additionally, the utility model discloses each pipe-line system arranges compactly, and area is little, utilizes the coal slurry to flow from reducing part valve simultaneously, has reduced device investment and later maintenance expense.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic flow chart of the present invention;

fig. 3 is a schematic view of the flow control of the present invention.

Description of reference numerals:

1. an electromagnetic iron remover; 2. a scrap iron collection device; 3. a coal slurry collection device; 4. a first pipeline; 41. an upper pipeline; 42. an intermediate pipeline; 43. a lower pipeline; 5. a second pipeline; 6. a first valve; 7. a second valve; 8. a third valve; 9. flushing the pipeline; 10. a fourth valve; 11. a PLC controller; 12. a bypass line; 13. provided is a coal mill.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.

It should be noted that the drawings provided in the following embodiments are only for illustrating the basic concept of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the form, amount and ratio of the components in actual implementation may be changed at will, and the layout of the components may be more complicated.

Example (b):

referring to fig. 1 and 2, a high-concentration coal slurry de-ironing system comprises an electromagnetic de-ironing separator 1, a scrap iron collecting device 2, a coal slurry collecting device 3, a first pipeline 4 and a second pipeline 5, wherein a feed inlet of the electromagnetic de-ironing separator 1 is connected with a discharge outlet of a coal mill 13 through the first pipeline 4, a discharge outlet of the electromagnetic de-ironing separator 1 is connected with one end of the second pipeline 5, and the other end of the second pipeline 5 is respectively connected to the scrap iron collecting device 2 and the coal slurry collecting device 3; the first pipeline 4 is provided with a first valve 6, the communication part of the second pipeline 5 and the scrap iron collecting device 2 is provided with a second valve 7, and the communication part of the second pipeline 5 and the coal slurry collecting device 3 is provided with a third valve 8.

In the embodiment, the electromagnetic iron remover 1 is arranged on the outlet pipeline of the coal mill 13, so that the iron scraps in the raw material coal can be effectively removed, and the damage of the iron scraps in the raw material coal and miscellaneous iron generated by the abrasion of a steel bar to equipment such as a high-pressure coal slurry pump and a gasification furnace is avoided; meanwhile, the iron absorption time and the iron absorption state of the electromagnetic iron remover 1 are adjustable, in the initial state, the electromagnetic iron remover 1 is in an excitation state, and can normally perform an iron removal process for a period of time, at the moment, the first valve 6 and the third valve 8 are opened, and the second valve 7 is in a closed state; after a period of time for removing iron, the electromagnetic iron remover 1 can be switched to an iron unloading process, namely a non-excitation state, at the moment, the first valve 6 and the third valve 8 are closed, and the second valve 7 is opened, so that the scrap iron sucked in the electromagnetic iron remover 1 can be conveniently collected in the scrap iron collecting device 2.

In this embodiment, still connect a washing pipeline 9 on the first pipeline 4, the first pipeline 4 with the intercommunication department that washes pipeline 9 installs fourth valve 10, just fourth valve 10 is located the lower extreme of first valve 6 sets up washing pipeline 9 and can conveniently provide the sparge water at the iron-discharging in-process, washes the remaining miscellaneous iron in electromagnetic de-ironing separator 1 and the second pipeline 5.

As shown in fig. 3, in this embodiment, the electromagnetic iron remover further includes a PLC controller 11, the electromagnetic iron remover 1, the first valve 6, the second valve 7, the third valve 8, and the fourth valve 10 are all in signal connection with the PLC controller 11, and the PLC controller 11 is configured to control power on and power off of the electromagnetic iron remover 1, and control opening and closing of the first valve 6, the second valve 7, the third valve 8, and the fourth valve 10.

Through setting up PLC controller 11, still can set up an iron unloading timer, can be with its and each valve and electromagnetism de-ironing separator 1 whole integration, realize full system automatic control operation, need not operating personnel, and control safety and stability, degree of automation is high.

In this embodiment, the first valve 6 and the second valve 7 are electric gate valves, which have simple and compact structure, smooth passage, small flow resistance, and are especially suitable for various solid materials; the third valve 8 and the fourth valve 10 are electric ball valves and are suitable for fluid materials.

In this embodiment, the first pipeline 4 includes an upper pipeline 41, a middle pipeline 42 and a lower pipeline 43 which are connected in sequence, and the upper pipeline 41 is a concentric reducer whose pipe diameter gradually decreases from top to bottom; the middle pipeline 42 is a tee joint, the upper interface of the middle pipeline is connected with the upper pipeline 41, the lower interface of the middle pipeline is connected with the lower pipeline 43, the side interface of the middle pipeline is connected with a bypass pipeline 12, and the other end of the bypass pipeline 12 is connected to the coal slurry collecting device 3; the first valve 6 is mounted on the lower pipe 43.

Specifically, regarding the first pipeline 4, the upper pipeline 41, namely the concentric reducer, is DN600 × 350, the middle pipeline 42, namely the tee joint, is DN400, the concentric reducer is inserted into the tee joint, the DN350 interface at the bottom of the concentric reducer can form a nozzle effect, and the coal slurry can properly increase the flow rate and then enter the electromagnetic iron remover 1; the pipe diameter of the lower pipe 43 is gradually changed from DN400 to DN 500. Regarding the second pipeline 5, the upper end gradually changes from DN500 to DN400, and the lower end is connected with an eccentric reducing pipe DN400 and DN250 for iron discharge. In some other embodiments, the specific relative size of each pipeline may be adjusted appropriately, and is not limited herein.

In this embodiment, a certain gradient is formed on the bypass pipeline 12 near one end of the side interface of the tee joint, so as to prevent coal slurry from flowing into the bypass pipeline 12 in the normal iron removal process; during the iron unloading process, the coal slurry can enter the coal slurry collecting device 3 through the bypass pipeline 12 through overflow, so that the coal slurry flowing out of the coal mill 13 is prevented from accumulating at the inlet of the electromagnetic iron remover 1.

In this embodiment, a first observation port (not shown) is provided on the bypass line 12 near one end of the side port of the tee; a second observation port (not shown) is arranged at the inlet of the electromagnetic iron remover 1; are all used for observing the flowing state of the coal slurry in the pipeline.

Specifically, in the present embodiment, in the initial state, the PLC controller 11 controls the electromagnetic iron remover 1 to be in the non-excitation state, and the first valve 6, the second valve 7, the third valve 8, and the fourth valve 10 are all in the closed state; when the electromagnetic iron remover works normally, the electromagnetic iron remover 1 is controlled to be excited, the first valve 6 and the third valve 8 are opened, and the second valve 7 and the fourth valve 10 are closed; during the iron unloading process, firstly controlling the electromagnetic iron remover 1 to be in a non-excitation state, closing the first valve 6, the third valve 8 and the fourth valve 10, controlling the second valve to be opened, preliminarily removing the miscellaneous iron in the electromagnetic iron remover 1, controlling the fourth valve 10 to be opened, and introducing washing water through a washing pipeline 9 to wash the residual miscellaneous iron; and finally, the normal operation state is recovered, namely the electromagnetic iron remover 1 is electrified to be in an excitation state, the second valve 7 and the fourth valve 10 are closed, and the first valve 6 and the third valve 8 are in an opening state.

The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims

1. The high-concentration coal slurry iron removal system is characterized by comprising an electromagnetic iron remover (1), a scrap iron collecting device (2), a coal slurry collecting device (3), a first pipeline (4) and a second pipeline (5), wherein a feed inlet of the electromagnetic iron remover (1) is connected with a discharge outlet of a coal mill (13) through the first pipeline (4), a discharge outlet of the electromagnetic iron remover (1) is connected with one end of the second pipeline (5), and the other end of the second pipeline (5) is respectively connected to the scrap iron collecting device (2) and the coal slurry collecting device (3); install first valve (6) on first pipeline (4), second pipeline (5) with second valve (7) are installed to the intercommunication department of scrap iron collection device (2), second pipeline (5) with third valve (8) are installed to the intercommunication department of coal slurry collection device (3).

2. The high-concentration coal slurry iron removal system according to claim 1, wherein a flushing pipeline (9) is further connected to the first pipeline (4), and a fourth valve (10) is installed at a communication position of the first pipeline (4) and the flushing pipeline (9).

3. The high-concentration coal slurry iron removal system according to claim 2, further comprising a PLC (11), wherein the electromagnetic iron remover (1), the first valve (6), the second valve (7), the third valve (8) and the fourth valve (10) are in signal connection with the PLC (11), and the PLC (11) is used for controlling the opening and closing of the electromagnetic iron remover (1), the first valve (6), the second valve (7), the third valve (8) and the fourth valve (10).

4. The system for iron removal from coal slurry according to claim 2 or 3, wherein said first valve (6) and said second valve (7) are electric gate valves; the third valve (8) and the fourth valve (10) are electric ball valves.

5. The system for removing iron from high-concentration coal slurry as claimed in claim 1, wherein the first pipeline (4) comprises an upper pipeline (41), a middle pipeline (42) and a lower pipeline (43) which are connected in sequence, and the upper pipeline (41) is a concentric reducer with gradually reduced pipe diameter from top to bottom.

6. The system for removing iron from high-concentration coal slurry as claimed in claim 5, wherein the middle pipeline (42) is a tee joint, the upper port of the tee joint is connected with the upper pipeline (41), the lower port of the tee joint is connected with the lower pipeline (43), the side port of the tee joint is connected with a bypass pipeline (12), and the other end of the bypass pipeline (12) is connected to the coal slurry collecting device (3); the first valve (6) is mounted on the lower pipe (43).

7. The system for removing iron from high-concentration coal slurry as claimed in claim 6, wherein a slope is formed on the bypass pipeline (12) near one end of the side port of the tee joint.

8. The high-concentration coal slurry de-ironing system according to claim 6, wherein a first viewing port is provided on the bypass line (12) near one end of the side port of the tee.

9. The high-concentration coal slurry de-ironing system according to claim 1, characterized in that a second viewing port is provided at the inlet of the electromagnetic de-ironing machine (1).