Burner cooling water return monitoring device

Abstract

The utility model discloses a burner cooling water return monitoring device which is characterized in that a burner is connected with a return water separation tank through a cooling water pipeline, and the return water separation tank is connected with a burner cooling water tank through a U-shaped bent drain valve; drainage U-shaped bends are arranged on the two sides of the U-shaped bend drainage valve, and the tops of the drainage U-shaped bends are connected with the return water separation tank through a siphon breaking valve; and the return water separation tank is connected with the CO on-line monitor. The return water separation tank is connected with the drainage U-shaped bend, the drainage U-shaped bend is higher than the water outlet of the return water separation tank, and the siphon breaking valve is added, so that the problem of siphon effect easily generated when liquid flows in a direct flow pipeline is solved, the stability of the liquid level in the return water separation tank is ensured, and an accurate CO monitoring value can be obtained.

Description

Technical Field

[0001] The utility model belongs to the technical field of pressurized fluidized bed gasification, and in particular relates to a burner cooling water return monitoring device. Background Art

[0002] Pressurized fluidized bed gasification technology is a key technology for the development of coal chemical industry and a key technology for the clean, efficient and green conversion of coal into chemical products. It uses coal as raw material and oxygen as gasifying agent. Coal is sprayed into the combustion chamber of a gasifier with oxygen through a process burner in powder or slurry state. Combustion reaction and gasification reaction occur instantly. The temperature in the reaction zone is as high as about 2000℃. High-temperature synthesis gas and its slag are generated by the reaction in the combustion chamber of the gasifier.

[0003] The temperature of the synthesis gas and its slag generated by the combustion chamber reaction is as high as about 1300℃, and the front end of the burner is easily damaged due to high temperature and high pressure, causing the gasifier to be unable to operate normally. Therefore, circulating cooling water is used to cool and protect the burner to extend the service life of the burner.

[0004] The return water of the burner cooling water needs to enter the return water separation tank, and analyzing the CO content in the return water of the burner cooling water is a key measure to monitor whether the burner is leaking. If the indicator in the return water separation tank alarms, once it is determined that the burner is leaking, the team needs to stop the car immediately to prevent safety problems such as explosions. However, the current return water pipe outlet pipe adopts a direct discharge design. When the cooling water return water flows through the pipe, it is easy to produce a siphon effect, causing large fluctuations in the liquid level of the return water separation tank. At the same time, the fluctuation of the liquid level is also easy to cause distortion of CO online monitoring, and it is impossible to obtain CO data in a timely and accurate manner to determine whether the burner is leaking, causing safety risks. Summary of the invention

[0005] In view of the above technical problems, the utility model provides a burner cooling water return monitoring device, which connects the return water separation tank with the drainage U-shaped bend, so that the height of the drainage U-shaped bend is higher than the water outlet of the return water separation tank, and adds a siphon breaking valve, which solves the siphon effect that is easily generated when the liquid circulates in the direct current pipeline, ensures the stability of the liquid level in the return water separation tank, and thus can obtain accurate CO monitoring values.

[0006] In order to achieve the above purpose, the utility model provides a burner cooling water return monitoring device, the burner is connected to the return water separation tank through a cooling water pipeline, the return water separation tank is connected to the burner cooling water tank through a drainage U-bend; the return water separation tank is connected to a CO online monitor.

[0007] Preferably, the drainage U-bend is 200 mm higher than the water outlet of the return water separation tank.

[0008] Preferably, the return water separation tank is connected to the CO online monitor via an analysis meter and an analysis remote transmitter.

[0009] Preferably, the top of the return water separation tank is connected to the exhaust valve pipeline.

[0010] Preferably, one side of the return water separation tank is connected to the helium storage tank pipeline via a flow meter, and the other side of the return water separation tank is connected to a liquid level meter.

[0011] Preferably, the drainage U-bend is connected to a U-bend bottom drainage valve, one end of the U-bend bottom drainage valve is connected to a return water separation tank, and the other end is connected to a burner cooling water tank.

[0012] A U-shaped bend bottom drainage valve is arranged on the pipeline between the drainage U-shaped bends. One end of the U-shaped bend bottom drainage valve is connected to the return water separation tank, and the other end is connected to the burner cooling water tank.

[0013] The beneficial effects of the utility model are:

[0014] 1. A drainage U-shaped bend is set between the return water separation tank and the burner cooling water tank. The drainage U-shaped bend is higher than the water outlet in the return water separation tank. When the liquid level in the return water separation tank is higher than the drainage U-shaped bend, the liquid is discharged through the drainage U-shaped bend. When the liquid level is lower than the drainage U-shaped bend, there is air in the drainage U-shaped bend.

[0015] 2. A normally open siphon breaking valve is set between the drainage U-bend and the top of the return water separation tank to solve the problem of negative pressure in the device pipeline causing siphoning when the drainage U-bend is air, thereby avoiding affecting the liquid reflux and affecting the liquid level in the return water separation tank and the monitoring accuracy of the CO value. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 1 is a schematic diagram of the structure of the utility model, in which 1 is a CO online monitor, 2 is a siphon breaking valve, 3 is a drainage U-bend, 4 is a U-bend bottom drainage valve, 5 is a return water separation tank, 6 is a burner cooling water tank, 7 is a cooling water pipeline, 8 is a burner, 9 is a helium storage tank, 10 is a flow meter, 11 is a liquid level meter, 12 is an analytical remote transmitter, 13 is an analytical meter, and 14 is an exhaust valve. DETAILED DESCRIPTION

[0017] The technical solution of the utility model is further explained below in conjunction with the accompanying drawings and specific embodiments. It is worth noting that the following embodiments are only preferred embodiments of the utility model and should not be understood as limiting the utility model. The protection scope of the utility model shall be based on the content recorded in the claims. Any modification or replacement made by a person skilled in the art to the technical solution of the utility model without creative work shall fall within the protection scope of the utility model.

[0018] Example 1

[0019] like Figure 1As shown, a burner cooling water return monitoring device, the burner 8 is connected to the return water separation tank 5 through the cooling water pipeline 7, the return water separation tank 5 is connected to the burner cooling water tank 6 through the drainage U-shaped bend 3, the cooling water in the burner 8 is buffered, detected and analyzed in the return water separation tank 5, and then sent to the burner cooling water tank 6 through the drainage U-shaped bend 3 for storage;

[0020] The top of the drainage U-bend 3 is connected to the return water separation tank 5 via a siphon breaking valve 2; the siphon breaking valve 2 is normally open to destroy the siphon effect caused by the circulation of liquid in the pipeline; when the liquid level in the return water separation tank 5 is higher than the drainage U-bend 3, the liquid is discharged through the drainage U-bend, and when the liquid level in the return water separation tank 5 is lower than the drainage U-bend 3, there is air in the drainage U-bend, and the siphon breaking valve 2 is used to prevent the return water separation tank 5 from drawing negative pressure.

[0021] The return water separation tank 5 is connected to the CO online monitor 1 via the analysis meter 13 and the analysis remote transmitter 12 to monitor the CO content of the liquid in the return water separation tank 5 in real time to monitor whether there is leakage in the burner.

[0022] Preferably, the drainage U-bend 3 is 200 mm higher than the water outlet of the return water separation tank 5 .

[0023] Preferably, the top of the return water separation tank 5 is connected to the exhaust valve 14 pipeline to discharge the gas in the return water separation tank 5 to avoid excessive pressure affecting the stability and safety of the device.

[0024] Preferably, one side of the return water separation tank 5 is connected to the helium storage tank 9 pipeline via a flow meter 10, and the amount of helium entering the return water separation tank 5 from the helium storage tank 9 is measured by the flow meter 10; the other side of the return water separation tank 5 is connected to a liquid level meter 11 to monitor the liquid level of the liquid in the return water separation tank 5 in real time.

[0025] A normally closed U-shaped bottom drain valve 4 is provided on the pipeline between the drainage U-shaped bends 3 . One end of the U-shaped bottom drain valve 4 is connected to the return water separation tank 5 , and the other end is connected to the burner cooling water tank 6 .

Claims

1. A burner cooling water return monitoring device, characterized in that: The burner (8) is connected to the return water separation tank (5) via a cooling water pipeline (7); the return water separation tank (5) is connected to the burner cooling water tank (6) via a drainage U-shaped bend (3); the drainage U-shaped bend (3) is connected to the return water separation tank (5) via a siphon breaking valve (2); and the return water separation tank (5) is connected to a CO online monitor (1).

2. A burner cooling water return monitoring device according to claim 1, characterized in that: The return water separation tank (5) is connected to the CO online monitor (1) via an analysis meter (13) and an analysis remote transmitter (12).

3. A burner cooling water return monitoring device according to claim 1, characterized in that: The top of the return water separation tank (5) is connected to the exhaust valve (14) pipeline.

4. A burner cooling water return monitoring device according to claim 1, characterized in that: One side of the return water separation tank (5) is connected to a pipeline of a helium storage tank (9) via a flow meter (10), and the other side of the return water separation tank (5) is connected to a liquid level meter (11).

5. A burner cooling water return monitoring device according to claim 1, characterized in that: A U-shaped bottom drain valve (4) is provided on the pipeline between the drainage U-shaped bends (3); one end of the U-shaped bottom drain valve (4) is connected to the return water separation tank (5), and the other end is connected to the burner cooling water tank (6).

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