CN211452978U - A coal slurry sampling device - Google Patents

Abstract

The utility model discloses a coal slurry sampling device: comprises a buffer tank and a flushing water pipeline; the buffer tank is provided with a coal slurry injection port and a sampling port positioned below the coal slurry injection port, and the buffer tank is internally provided with a washing water distributor positioned above the coal slurry injection port; the washing water pipeline comprises a first branch for supplying water to the washing water distributor and a second branch for washing the coal slurry sampling pipe. Coal slurry sampling device utilizes the buffer tank sampling to introduce water in the buffer tank in order to wash remaining coal slurry after the sample, thereby can avoid sampling device to block up, reduce the sample amount of labour.

Description

A coal slurry sampling device

technical field

The utility model relates to a sampling device for the preparation process of coal-water slurry, in particular to a convenient and simple low-pressure coal slurry pipeline sampler.

Background technique

With the rapid development of coal chemical industry, the gasification process using coal as raw material is more and more widely used, and among many gasification technologies, the entrained flow technology of coal-water slurry pressurized gasification is represented. In the coal-water slurry gasification process, in order to ensure the gasification efficiency and safety, it is often required to control the coal slurry indicators entering the furnace, such as the concentration of 58% to 63%, the viscosity of 500 to 1200cp, and the particle size of 44 to 1430μm. In order to ensure the safe and stable operation of the gasification unit, it is necessary to timely sample and analyze and adjust the water-coal ratio and the amount of additives.

Sampling generally uses a short sampling pipe with a 2" external ball valve pre-welded on the pipeline. However, because the coal slurry is easy to agglomerate and block the short sampling pipe, after opening the ball valve, the coal slurry is not easy to flow out or the flow rate is small, so manual dredging is required. , not only has potential safety hazards, but also causes a large amount of coal slurry discharge, waste of raw materials and is not conducive to clean production.

SUMMARY OF THE INVENTION

The utility model aims to provide a coal slurry sampling device.

In order to achieve the above object, the utility model adopts the following technical solutions:

The sampling device includes a buffer tank and a flushing water pipeline; the buffer tank is provided with a coal slurry injection port and a sampling port located below the coal slurry injection port, and the buffer tank is provided with a flushing water located above the coal slurry injection port Distributor; the flushing water pipeline includes a first branch for supplying water to the flushing water distributor and a second branch for flushing the coal slurry inlet.

Preferably, the buffer tank includes a circular pipe section and a conical pipe section connected to the lower end of the circular pipe section, and the sampling port is located at the bottom of the conical pipe section.

Preferably, the first branch circuit includes a first flushing water valve, one end of the first flushing water valve is connected to a flushing water interface for connecting external water supply, and the other end is connected to the flushing water distributor.

Preferably, the second branch circuit includes a second flushing water valve, one end of the second flushing water valve is connected to the flushing water port for connecting external water supply, and the other end is connected to the buffer tank.

Preferably, the flushing water distributor is provided with a plurality of water spray holes distributed along the circumference of the inner wall of the buffer tank.

Preferably, an exhaust port is also provided on the buffer tank.

Preferably, the sampling device further includes a sampling pipe connected to the coal slurry inlet.

Preferably, a diversion groove or a trench is provided below the sampling port.

The beneficial effects of the present utility model are embodied in:

The coal slurry sampling device of the utility model uses a buffer tank for sampling, and uses a flushing water pipeline to introduce water into the buffer tank to flush the coal slurry remaining after sampling, thereby avoiding clogging of the sampling device and keeping it clean, effectively reducing sampling Process labor and waste of coal slurry raw materials.

Description of drawings

Fig. 1 is the structural representation of the low-pressure coal slurry pipeline sampling device in the embodiment of the utility model;

In the figure: 1—flushing water interface; 2—sampling port; 3—coal slurry pipeline interface; 4—flushing water distributor; 5—first flushing water valve; 6—second flushing water valve; 7—third flushing water valve; 8—coal slurry ball valve; 9—exhaust port; 10—buffer tank; 11—injection port.

Detailed ways

The present utility model will be described in detail below in conjunction with the accompanying drawings.

Referring to FIG. 1 , the low-pressure coal slurry pipeline sampling device of the present invention consists of a flushing water pipeline and a buffer tank 10 . The upper part of the buffer tank 10 is a Φ150mm circular tube, the lower part is a concentric conical tube, the top of the circular tube is closed with a top cover, and the bottom is welded with the conical tube. The flushing water pipeline includes a flushing water distributor 4 and a first flushing water valve 5 , a second flushing water valve 6 and a third flushing water valve 7 . The flushing water distributor 4 is fixed in the top of the buffer tank 10 , and the outer side of the coil of the distributor is evenly distributed with water spray holes of Φ5mm for flushing the coal slurry adhering to the inner wall of the buffer tank 10 . One end of the third flushing water valve 7 is connected to the flushing water port 1, and the other end is divided into two branches, one branch is connected to the flushing water distributor 4 through the first flushing water valve 5, and the other branch is connected through the second flushing water The water valve 6 is connected to the middle part of the buffer tank 10 (the lower part of the circular pipe), the inlet of the coal slurry ball valve 8 is connected to the coal slurry pipeline interface 3, and the outlet of the coal slurry ball valve 8 is connected to the inlet on the buffer tank 10 through the original horizontal sampling short pipe. Sampling port 11 (the sampling port and the sampling short pipe are connected by flange), the connection position is directly opposite to the second flushing water valve 6, and the connecting pipe (sampling short pipe) between the coal slurry ball valve 8 and the sampling port 11 is exhausted. It may be short, water can be sprayed from the sample inlet into the short sampling pipe through the second flushing water valve 6 to remove the residual coal slurry after sampling. In addition, an exhaust port 9 is also provided on the top cover.

When in use, first open the first flushing water valve 5, the second flushing water valve 6 and the third flushing water valve 7, wet the buffer tank 10 by spraying water and ensure that the sample inlet 11 is unblocked, and then close the first flushing water valve 5 , the second flushing water valve 6 and the third flushing water valve 7; then open the coal slurry ball valve 8, sample at the sampling port 2 at the bottom of the conical tube (that is, collect a certain amount of coal slurry at the sampling port 2), and then close the coal slurry Ball valve 8; then open the first flushing water valve 5, the second flushing water valve 6 and the third flushing water valve 7, when the sample inlet 11 is rinsed clean, and no coal slurry flows out from the sampling port 2, each flushing water can be closed valve.

The above-mentioned low-pressure coal slurry pipeline sampling device is non-standard equipment and can be processed on the site where the equipment is installed. The installation height should be determined and fixed according to the height of the coal slurry pump inlet pipeline. A diversion groove or a trench is provided below the sampling port 2 to discharge a very small amount of residual coal slurry flushed out of the buffer tank 10 .

Claims (8)

1. A coal slurry sampling device, characterized in that: the sampling device comprises a buffer tank (10) and a flushing water pipeline; the buffer tank (10) is provided with a coal slurry sampling port (11) and a coal slurry inlet (11) located at the coal slurry inlet. A sampling port (2) below the sample port (11), a flushing water distributor (4) located above the coal slurry sampling port (11) is arranged in the buffer tank (10); A first branch for water supply to the device (4) and a second branch for flushing the coal slurry inlet (11). 2 . The coal slurry sampling device according to claim 1 , wherein the buffer tank ( 10 ) comprises a circular pipe section and a conical pipe section connected to the lower end of the circular pipe section, and the sampling port ( 2 ) is located in the conical section. 3 . Bottom of pipe segment. 3. A coal slurry sampling device according to claim 1, characterized in that: the first branch comprises a first flushing water valve (5), and one end of the first flushing water valve (5) is connected to an external The flushing water interface (1) of the water supply is connected, and the other end is connected with the flushing water distributor (4). 4. A coal slurry sampling device according to claim 1, characterized in that: the second branch comprises a second flushing water valve (6), and one end of the second flushing water valve (6) is connected to an external The flushing water interface (1) of the water supply is connected, and the other end is connected with the buffer tank (10). 5 . The coal slurry sampling device according to claim 1 , wherein the flushing water distributor ( 4 ) is provided with a plurality of water spray holes distributed along the inner wall of the buffer tank ( 10 ). 6 . 6 . The coal slurry sampling device according to claim 1 , wherein the buffer tank ( 10 ) is further provided with an exhaust port ( 9 ). 7 . 7 . The coal slurry sampling device according to claim 1 , wherein the sampling device further comprises a sampling pipe connected to the coal slurry sampling port ( 11 ). 8 . 8 . The coal slurry sampling device according to claim 1 , wherein a diversion groove or a trench is arranged below the sampling port ( 2 ). 9 .

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