CN214406090U

CN214406090U - Fire retardant device of incinerator

Info

Publication number: CN214406090U
Application number: CN202023235716.XU
Authority: CN
Inventors: 张�诚
Original assignee: DSM Eternal Resins Kunshan Co Ltd
Current assignee: Covestro Eternal Resins Kunshan Co Ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-10-15
Anticipated expiration: 2030-12-28

Abstract

The utility model discloses an burn burning furnace back-fire relief device, include: an incinerator body; the waste gas pipeline is communicated with the incinerator body, and one end, close to the incinerator body, of the waste gas pipeline is provided with a flame arrester; a temperature transmitter mounted on the flame arrestor; the safety controller is electrically connected with the temperature transmitter; an incinerator controller electrically connected to the safety controller and the incinerator body; and the first valve is electrically connected with the incinerator controller and is arranged on the waste gas pipeline. The utility model discloses make to burn burning furnace back-fire relief device and be in the safe state of multiple protection, can effectively prevent the emergence of incident, improved the security that whole burning furnace back-fire relief device burns.

Description

Fire retardant device of incinerator

Technical Field

The utility model relates to an equipment safety field, specificly an burn burning furnace back-fire relief device.

Background

The incinerator fire retardant device is used for incinerating organic waste gas and waste water generated in the production process, and the organic waste gas and the waste water are combusted and decomposed into carbon dioxide and vapor through the high temperature in the incinerator body, so that the emission reaches the standard. Present burn burning furnace back-fire relief device, including with burn burning furnace body's the waste gas pipeline of intercommunication, and only install the spark arrester on the waste gas pipeline, when taking place the tempering, flame is blocked and is extinguished by the spark arrester. However, the fire retardant device of the existing incinerator is only protected by a fire retardant device layer, so that new waste gas cannot be prevented from entering the incinerator body when a fault occurs, accidents are easy to happen, and the safety is low.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defect in the prior art, the embodiment of the utility model provides an burn burning furnace back-fire relief device, it is used for solving the lower problem of above-mentioned security.

The embodiment of the application discloses: an incinerator fire arrestor, comprising: an incinerator body; the waste gas pipeline is communicated with the incinerator body, and one end, close to the incinerator body, of the waste gas pipeline is provided with a flame arrester; a temperature transmitter mounted on the flame arrestor; the safety controller is electrically connected with the temperature transmitter; an incinerator controller electrically connected to the safety controller and the incinerator body; and the first valve is electrically connected with the incinerator controller and is arranged on the waste gas pipeline.

Further, including leading to the breather pipe that has nitrogen gas, the breather pipe communicates with the exhaust gas line who is located between first valve and the spark arrester, installs the second valve with incinerator controller electric connection on the breather pipe.

Further, the temperature transmitter, the safety controller, the first valve and the second valve are all SIL1 ratings.

Further, the first valve is installed to the waste gas pipeline that the flame arrester is kept away from incinerator body one end.

Further, including the exhaust duct, the exhaust duct communicates with burning furnace body and chimney, installs the draught fan on the exhaust duct.

Further, burn burning furnace body including setting up in the inside natural gas nozzle of burning furnace body, natural gas nozzle and natural gas line intercommunication burn burning furnace body still with lead to the air conduit intercommunication that has combustion air.

Further, a waste water pipe communicated with the incinerator body is included.

The utility model has the advantages as follows:

1. the temperature change in the flame arrester can be monitored by the temperature transmitter, so that the backfire can be found in time. The incinerator body is controlled by the incinerator controller, so that the incinerator body can jump immediately when tempering occurs. By controlling the first valve to be closed by the incinerator controller, new exhaust gas can be prevented from entering the incinerator body when an abnormal state occurs. The fire retardant device of the incinerator is in a safety state of multiple protection, so that safety accidents can be effectively prevented, and the safety of the fire retardant device of the whole incinerator is improved.

2. Nitrogen enters the incinerator body through the second valve through a waste gas pipeline, and gas in the incinerator body is discharged, so that process safety accidents caused by excessive flammable gas accumulated in the incinerator body are prevented. The effect of improving the safety of the fire retardant device of the incinerator is realized.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of a fire retardant device of an incinerator in an embodiment of the present invention;

reference numerals of the above figures: 1. an incinerator body; 2. an exhaust gas line; 21. an exhaust gas tank; 3. a flame arrestor; 4. a temperature transmitter; 5. a safety controller; 6. an incinerator controller; 7. a first valve; 8. a second valve; 9. an exhaust duct; 10. a chimney; 11. an induced draft fan; 12. a natural gas burner; 13. a natural gas pipeline; 14. an air duct; 15. a waste pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1, the flame arrester of the incinerator of the embodiment includes:

the incinerator body 1 can be a three-dimensional space surrounded by a furnace wall, so that organic waste gas or waste water can be fully combusted as far as possible. Of course, the shape of the incinerator body 1 can be adjusted according to actual needs. The incinerator body 1 may be provided with a combustion device for combusting the exhaust gas or wastewater inside the incinerator body 1.

And a waste gas pipeline 2, one end of the waste gas pipeline 2 being capable of communicating with the incinerator body 1, and the other end of the waste gas pipeline 2 being capable of being connected with a waste gas tank 21 for producing or storing organic waste gas in the production process, for introducing the waste gas into the incinerator body 1. A flame arrester 3 may be installed at an end of the exhaust gas line 2 adjacent to the incinerator body 1, and the flame arrester 3 serves to block and extinguish the flame when the high-temperature gas or flame in the incinerator body 1 flows in reverse into the exhaust gas line 2.

Temperature transmitter 4, temperature transmitter 4 can set up on spark arrester 3 for detect the temperature in spark arrester 3 and with temperature signal transmission to safety controller 5 in, thereby the inside ambient temperature of spark arrester 3 is monitored in real time.

The safety controller 5, the safety controller 5 can be disposed outside the incinerator body 1 and electrically connected to the temperature transmitter 4, so as to receive the temperature signal transmitted by the temperature transmitter 4. The safety controller 5 can send out corresponding electric signals to the incinerator controller 6 according to the received different electric signals sent by the temperature transmitter 4 at different temperatures. The safety controller 5 can set the alarm temperature to 200 ℃, and when the alarm temperature is reached in the flame arrester 3, the safety controller 5 can send an emergency trip command to the incinerator controller 6, so that the incinerator controller 6 controls the incinerator body 1 to trip and stop. Of course, the alarm temperature can be adjusted according to actual needs.

An incinerator controller 6, the incinerator controller 6 being electrically connectable to the safety controller 5 and the incinerator body 1. The incinerator controller 6 can receive the electric signal transmitted by the safety controller 5 and send an electric signal to the incinerator body 1 to control the opening or closing of the incinerator body 1. The incinerator can also receive a trip signal sent by the incinerator body 1.

The first valve 7, the first valve 7 may be electrically connected to the burner controller 6 to be opened or closed by the burner controller 6. The first valve 7 can be mounted on the exhaust gas line 2, so that a flow-through or shut-off effect of the exhaust gas line 2 can be achieved by opening or closing the first valve 7.

In an alternative embodiment, the incinerator body 1 is subjected to back fire in the exhaust gas line 2 during combustion due to positive furnace pressure or other abnormal conditions. The temperature transmitter 4 detects the temperature in the flame arrester 3 and transmits a temperature signal to the safety controller 5. Then, since the temperature signal received by the safety controller 5 is higher than the alarm temperature, an emergency trip command is issued to the incinerator controller 6. The incinerator controller 6 controls the incinerator body 1 to trip and controls the first valve 7 to close, thereby finding a flashback in the exhaust gas line 2 and shutting off the exhaust gas line 2 in time.

In another alternative embodiment, the incinerator body 1 makes a trip during the combustion process, at which time the incinerator body 1 signals to the incinerator controller 6 that the trip has occurred. Then, the incinerator controller 6 controls the first valve 7 to be closed, thereby effectively preventing backfire from occurring when the incinerator body 1 is tripped.

By means of the structure, the temperature change in the flame arrester 3 can be monitored through the temperature transmitter 4, so that the backfire can be found in time. The incinerator body 1 is controlled by the incinerator controller 6, so that the incinerator body 1 can be immediately jumped when backfire occurs. By controlling the first valve 7 to be closed by the incinerator controller 6, it is possible to prevent new exhaust gas from entering the incinerator body 1 when an abnormal state occurs. The fire retardant device of the incinerator is in a safety state of multiple protection, so that safety accidents can be effectively prevented, and the safety of the fire retardant device of the whole incinerator is improved.

In particular, as shown in fig. 1, a nitrogen-vented snorkel may be included, which may be in communication with the exhaust line 2 between the first valve 7 and the flame arrestor 3. So that nitrogen gas can be introduced into the incinerator body 1 after passing through the flame arrester 3 after the first valve 7 is closed. Since nitrogen gas is chemically inert, it does not burn or react with the gas in the incinerator after being introduced into the incinerator body 1. The vent pipe may be provided with a second valve 8 electrically connected to the burner controller 6 so that the rate of introduction of nitrogen into the burner can be varied by controlling the second valve 8 by the burner controller 6.

In this embodiment, when an abnormal state such as an incinerator trip or backfire occurs, the incinerator controller 6 controls the first valve 7 to be closed and the second valve 8 to be opened. So that nitrogen gas enters the incinerator body 1 through the second valve 8 via the waste gas pipeline 2 and discharges the gas in the incinerator body 1, thereby preventing process safety accidents caused by excessive flammable gas accumulated in the incinerator body 1. The effect of improving the safety of the fire retardant device of the incinerator is realized.

In a preferred embodiment, the temperature transmitter 4, the safety controller 5, the first valve 7 and the second valve 8 are all SIL1 grade. Since instruments rated at SIL1 have better safety integrity and fail-safe design than general instruments. Therefore, the method is suitable for more precise use environments, and can effectively avoid abnormal accidents caused by failure of the control system.

Specifically, as shown in fig. 1, the first valve 7 is installed on the exhaust gas line 2 at the end of the flame arrester 3 remote from the incinerator body 1. So that, after a flashback has occurred, the flame first reaches the flame arrester 3 and is arrested and extinguished by the flame arrester 3. By closing the first valve 7 at this point, the flame arrester 3 can still function while preventing new exhaust gas from entering the incinerator body 1.

Specifically, as shown in fig. 1, an exhaust duct 9 may be included, the exhaust duct 9 may be communicated with the incinerator body 1 and a chimney 10, and the exhaust duct 9 is used for discharging gas in the incinerator body 1 and discharging the incinerator fire retardant device from the chimney 10. An induced draft fan 11 may be installed on the exhaust duct 9, and the induced draft fan 11 may guide the gas from one end of the incinerator body 1 to one end where the chimney 10 is located, and discharge the gas from the chimney 10.

Specifically, as shown in fig. 1, the incinerator body 1 includes a natural gas burner 12 disposed inside the incinerator body 1, and the natural gas burner 12 may be communicated with a natural gas pipeline 13, so that the natural gas burner 12 may spray flame for burning the waste gas input from the waste gas pipeline 2 into the incinerator body 1 and the waste water input from the waste water pipe 15 into the incinerator body 1. The incinerator body 1 is also in communication with an air duct 14 through which combustion air is passed. The combustion air is used to make the flame sprayed from the natural gas burner 12 burn sufficiently.

Specifically, as shown in fig. 1, a waste water pipe 15 may be included, one end of the waste water pipe 15 may be communicated with the incinerator body 1, and the other end of the waste water pipe 15 may be connected to waste water generated in the manufacturing process. The waste water pipe 15 is used to introduce waste water into the incinerator body 1 and to allow the waste water to be burned in the incinerator body 1.

The present invention has been explained by using specific embodiments, and the explanation of the above embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.

Claims

1. An incinerator fire barrier, comprising:

an incinerator body;

the waste gas pipeline is communicated with the incinerator body, and one end, close to the incinerator body, of the waste gas pipeline is provided with a flame arrester;

a temperature transmitter mounted on the flame arrestor;

the safety controller is electrically connected with the temperature transmitter;

the incinerator controller is electrically connected with the safety controller and the incinerator body;

and the first valve is electrically connected with the incinerator controller and is arranged on a waste gas pipeline.

2. An incinerator fire arrestor as claimed in claim 1, comprising a snorkel through which nitrogen gas is passed, the snorkel being in communication with a waste gas line between the first valve and the fire arrestor, the snorkel being provided with a second valve electrically connected to the incinerator controller.

3. An incinerator fire barrier as claimed in claim 2 wherein said temperature transmitter, said safety controller, said first valve and said second valve are all of SIL1 grade.

4. An incinerator fire barrier as claimed in claim 1 wherein said first valve is mounted to a waste gas line at the end of the fire barrier remote from the incinerator body.

5. The incinerator fire retardant device as claimed in claim 1, comprising an exhaust duct communicating with the incinerator body and a chimney, the exhaust duct being provided with an induced draft fan.

6. The incinerator fire retardant device as claimed in claim 1, wherein said incinerator body includes a natural gas burner disposed inside said incinerator body, said natural gas burner being in communication with a natural gas pipeline, said incinerator body being further in communication with an air pipeline through which combustion air is introduced.

7. An incinerator fire barrier as claimed in claim 1 including a waste pipe communicating with said incinerator body.