CN212904077U

CN212904077U - Sampling device with emission reduction function

Info

Publication number: CN212904077U
Application number: CN202021288443.2U
Authority: CN
Inventors: 张启东; 赵明眩; 李建鹏; 李顺; 周纪武; 刘文豹
Original assignee: China Petroleum and Chemical Corp
Current assignee: China Petroleum and Chemical Corp
Priority date: 2020-07-03
Filing date: 2020-07-03
Publication date: 2021-04-06
Anticipated expiration: 2030-07-03

Abstract

The utility model discloses a sampling device with emission reduction function, which comprises a sampling pipe connected on a catalyst circulating pipe, wherein the sampling pipe extends downwards along the inclined direction, a cooling material tank is arranged at the lower end of the sampling pipe, a sampling pipe is arranged on the cooling material tank, the sampling pipe extends downwards along the inclined direction, and a sampling valve is arranged on the sampling pipe; the sampling pipe is connected with the lowest point of the cold charge tank; the sample discharging pipe is connected with a loose air pipe, a sample discharging valve is arranged on the sample discharging pipe, and a first connecting point of the loose air pipe and the sample discharging pipe is positioned between the sample discharging valve and the catalyst circulating pipe; a cut-off valve is arranged on the loose air pipe; one end of the cold material tank, which is far away from the sample discharge pipe, is connected with a back-blowing pipe, and a back-blowing valve is arranged on the back-blowing pipe. When utilizing this application to take a sample, reducible outer volume of arranging the catalyst, reduced the total amount that solid useless was handled, when taking a sample moreover, the catalyst has handled the cooling state, can not cause accidents such as scald.

Description

Sampling device with emission reduction function

Technical Field

The utility model relates to a sampling device with reduce discharging function.

Background

The performance of the catalyst in the industrial catalytic cracking process plays a key role in the product yield and the product distribution. In order to accurately master the service performance of the catalyst, the catalyst needs to be collected from a reaction regeneration system at regular time every day for analysis of test results so as to judge the quality of the catalyst and guide the adjustment of production and the use of the catalyst.

At present, sampling still adopts the manual mode to go on, and when sampling, in order to guarantee to gather the catalyst and can reflect real performance at that time, need to discharge the catalyst that persists in the sampling pipe, when the catalyst that discharges out reaches the temperature when in service condition, samples again, consequently, when sampling at every turn, all need to discharge partial catalyst, causes the waste of catalyst. The catalyst in the reverse recycling system belongs to dangerous solid waste, is difficult to collect and treat after being discharged and can cause environmental pollution. After raw oil is reacted in a reactor, generated coke is attached to the surface of a catalyst, and the catalyst has a temperature of 500 ℃; the catalyst with coke on the surface area is 700 ℃ after the coke is burnt out in a regenerator and the activity is recovered, and all the catalysts belong to high-temperature media. Personnel scalding accidents easily occur in the sampling process, and intrinsic safety cannot be achieved.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, the present invention provides a sampling device with emission reduction function, which comprises a sample tube connected to a catalyst circulation tube, wherein the sample tube extends downwards along an inclined direction, a cooling material tank is installed at the lower end of the sample tube, a sampling tube is installed on the cooling material tank, the sampling tube extends downwards along the inclined direction, and a sampling valve is installed on the sampling tube; the sampling pipe is connected with the lowest point of the cold charge tank;

the sample discharging pipe is connected with a loose air pipe, a sample discharging valve is arranged on the sample discharging pipe, and a first connecting point of the loose air pipe and the sample discharging pipe is positioned between the sample discharging valve and the catalyst circulating pipe; a cut-off valve is arranged on the loose air pipe;

one end of the cold material tank, which is far away from the sample discharge pipe, is connected with a back-blowing pipe, and a back-blowing valve is arranged on the back-blowing pipe.

In the non-sampling stage, the stop valve is kept in an open state, air flow enters the catalyst circulating pipe from the loose air pipe to loosen the catalyst of the catalyst circulating pipe, and the blockage caused by the bridging phenomenon of the catalyst is avoided. When sampling, the stop valve is closed at first, the back-blowing valve and the sampling valve are kept closed, then the sample discharge valve is opened, the catalyst in the catalyst circulating pipe enters the cold material tank, the cold material tank is filled with the catalyst, and then the sample discharge valve is closed. And (5) opening the stop valve again to loosen the catalyst in the circulating pipe.

Waiting for the cooling of the catalyst in the cold charge tank, after the cooling of the catalyst in the cold charge tank is completed, opening the sampling valve, discharging a proper amount of catalyst into the sampling cup to be used as a catalyst sample, and then closing the sampling valve.

After sampling is completed, the sampling valve is closed, the back-blowing valve and the sample discharge valve are opened, the air flow blows the catalyst in the cooling material tank and the sample discharge pipe back to the catalyst circulating pipe, and the back-blowing valve and the sample discharge valve are closed. Then the sampling valve is opened again, and a small amount of catalyst remained in the sampling pipe between the sampling valve and the cold charge tank is taken as a sample to enter the sampling cup.

When utilizing this application to take a sample, need not discharge the catalyst of persisting in the sampling tube again, reduced the volume of arranging the catalyst outward, reduced the total amount of handling useless admittedly, when taking a sample moreover, the catalyst has handled the cooling state, can not cause accidents such as scald to the sampling personnel, has guaranteed sampling personnel's safety.

Furthermore, one end of the cold material tank, which is far away from the sample discharge pipe, is connected with an emptying pipe, and an emptying valve is installed on the emptying pipe. When the cold burden jar caused the jam, can dredge the cold burden jar through the instrument for the blow-down pipe.

Further, in order to facilitate dredging of the sampling pipe, the emptying pipe and the sampling pipe are coaxially arranged.

In order to simplify the pipeline structure, the blowback air pipe is connected to the blow-down pipe, and the second connecting point of the blowback air pipe and the blow-down pipe is positioned between the blowback valve and the cold charge tank. After the blowback air pipe is connected to the blow-down pipe, when the catalyst is blown back to the catalyst circulating pipe, the catalyst in the blow-down pipe between the second connecting point and the cold charging bucket can be blown back to the catalyst circulating pipe, and when sampling, the catalyst discharged from the catalyst circulating pipe can also enter the blow-down pipe between the second connecting point and the cold charging bucket, so that the fresh sample is guaranteed to be sampled at every time, and the catalyst remained in the pipeline cannot be generated.

Furthermore, in order to simplify the structure of the equipment and reduce the connection of pipelines, the blowback air pipe is connected to the loose air pipe.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Detailed Description

Referring to fig. 1, a sampling apparatus with emission reduction function includes a sample tube 11 connected to a catalyst circulation tube 800, the sample tube 11 extending downward in an inclined direction, a cold charge tank 31 installed at a lower end of the sample tube 11, a sampling tube 32 installed on the cold charge tank 31, the sampling tube 32 extending downward in an inclined direction, and a sampling valve 33 installed on the sampling tube 32; the sampling tube is connected to the lowest point of the cold charge tank 31.

The loosening air pipe 21 is connected to the sample discharging pipe 11, the sample discharging valve 12 is mounted on the sample discharging pipe 11 when the sample discharging pipe 11 is loosened, and a first connection point 28 between the loosening air pipe 21 and the sample discharging pipe 11 is located between the sample discharging valve 12 and the catalyst circulation pipe 800. A cut-off valve 24 is mounted on the loosening air duct 21.

One end of the cold material tank 31, which is far away from the sample discharge pipe 11, is connected with a blowback pipe 22, and a blowback valve 25 is installed on the blowback pipe 22.

To facilitate the purging of the cooling tank 31, an air release pipe 13 is connected to an end of the cooling tank 31 away from the discharge pipe 11, and an air release valve 14 is mounted on the air release pipe 13. The emptying pipe and the sampling pipe are coaxially arranged. So that the sampling pipe can be dredged through the emptying pipe when the sampling pipe 11 is blocked.

In order to smoothly blow the catalyst in the cold charge tank back into the catalyst circulation pipe 800, the blowback pipe 22 is connected to the blow-down pipe 13, and the second connection point 29 of the blowback pipe and the blow-down pipe is located between the blowback valve and the cold charge tank.

The blowback duct 22 is connected to the loosening duct 21 to simplify the connection of the ducts.

In the non-sampling stage, the cut-off valve 24 is kept open, and the air flow enters the catalyst circulation pipe 800 from the loose air pipe 21 to loosen the catalyst in the catalyst circulation pipe, so that the blockage of the catalyst due to the bridging phenomenon is avoided. During sampling, the cut-off valve 24 is closed, the blowback valve 25, the sampling valve 33 and the emptying valve 14 are kept closed, then the sample discharge valve 12 is opened, the catalyst in the catalyst circulation pipe 800 enters the cold material tank 31 and is filled with the cold material tank, and then the sample discharge valve 12 is closed. The shut-off valve 24 is re-opened to loosen the catalyst in the circulation pipe.

Waiting for the cooling of the catalyst in the cold material tank 31, after the cooling of the catalyst in the cold material tank 31 is completed, opening the sampling valve 33, discharging a proper amount of catalyst into the sampling cup 40 as a catalyst sample, and then closing the sampling valve.

After sampling is finished, the sampling valve 33 is closed, the back-blowing valve 25 and the sample discharge valve 12 are opened, the air flow blows the catalyst in the cooling material tank and the sample discharge pipe 11 back to the catalyst circulating pipe, and the back-blowing valve 25 and the sample discharge valve 12 are closed. The sampling valve 33 is then opened again and a small amount of catalyst remaining in the sampling tube between the sampling valve 33 and the cold charge tank 31 is taken as a sample into the sampling cup 40. When the catalyst blocks the sampling pipe, the cooling tank or the emptying pipe, the emptying valve 14 is opened, and the dredging is carried out by a tool.

Claims

1. A sampling device with emission reduction function is characterized by comprising a sampling pipe connected to a catalyst circulating pipe, wherein the sampling pipe extends downwards along an inclined direction, the lower end of the sampling pipe is provided with a cooling tank, a sampling pipe is arranged on the cooling tank, the sampling pipe extends downwards along the inclined direction, and a sampling valve is arranged on the sampling pipe; the sampling pipe is connected with the lowest point of the cold charge tank;

2. The sampling device of claim 1, wherein a vent pipe is connected to an end of the cold storage tank away from the sample discharge pipe, and a vent valve is mounted on the vent pipe.

3. A sampler device as claimed in claim 2, wherein the vent tube is arranged coaxially with the sample tube.

4. A sampler device as claimed in claim 2 wherein the blowback duct is connected to the blow down duct and the second connection point of the blowback duct to the blow down duct is between the blowback valve and the cold charge tank.

5. A sampler device as claimed in claim 1 wherein the blowback hose is connected to the loosening hose.