CN214973933U - Reation kettle waste gas safety collecting system - Google Patents
Reation kettle waste gas safety collecting system Download PDFInfo
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- CN214973933U CN214973933U CN202120210380.7U CN202120210380U CN214973933U CN 214973933 U CN214973933 U CN 214973933U CN 202120210380 U CN202120210380 U CN 202120210380U CN 214973933 U CN214973933 U CN 214973933U
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Abstract
The utility model relates to a reation kettle waste gas safety collecting system, this system include reation kettle, safe water-sealed tank and waste gas mixing sleeve pipe. The top of the reaction kettle is respectively provided with a feeding pipe, a nitrogen input pipe and a vent pipe, and the bottom of the reaction kettle is provided with a discharge pipe; the breather pipe is connected with the safe water seal tank through a single breather valve and a waste gas inlet pipe; a demister is arranged in the safe water seal tank, a water replenishing pipe is arranged on one side of the safe water seal tank, a waste gas conveying pipe is arranged at the top of the safe water seal tank, and a water outlet pipe is arranged at the bottom of the safe water seal tank; the waste gas conveying pipe is connected with the waste gas mixing sleeve, and the waste gas mixing sleeve is connected with a waste gas discharging pipe through a fan. The utility model discloses simple structure, simple to operate, operation energy consumption are low.
Description
Technical Field
The utility model relates to a safety ring protects the field, especially relates to a reation kettle waste gas safety collection system.
Background
The reaction kettle is a reaction device which is widely applied to petroleum, chemical engineering, rubber, pesticides, dyes, medicines and foods and is a pressure container for completing technological processes of vulcanization, nitration, hydrogenation, alkylation, polymerization, condensation and the like. Because the reaction conditions are strict, in order to maintain and guarantee the pressure in the kettle, the reaction kettle is provided with a breather valve, when the pressure in the kettle is higher than the expiratory pressure of the breather valve, the valve is opened, and the pressure in the reaction kettle is released; when the pressure in the kettle is lower than the suction pressure of the breather valve, the valve is opened, and the reaction kettle is pressurized.
In general, a reaction kettle is sensitive to oxygen content, and an air suction valve cannot be communicated with the atmosphere, so that the reaction kettle is connected with a nitrogen pipeline, and nitrogen is sucked in the kettle at low pressure. Most of the expiratory valves are directly communicated with the atmosphere, and the expired waste gas is directly dissipated in the air. At first, because the air volume of the exhaust gas exhaled by the reaction kettle is small, the concentration of the components is low, the collection is difficult, and the exhaust gas is selected to be discharged in an unorganized way. In recent years, along with the enhancement of environmental requirements and the improvement of the environmental quality requirements in factories, more and more reaction kettle waste gas is brought into organized discharge, and the problem of how to collect the reaction kettle waste gas is caused.
The reaction kettle waste gas is collected, safety is a primary consideration, and in order to ensure the safety performance of a system, a gas collecting hood is arranged on the reaction kettle in the prior collection process, the other end of the gas collecting hood is connected with a fan, and escaped gas and air in the surrounding atmosphere are collected together by negative pressure formed by the fan and then are conveyed to waste gas treatment equipment, so that the problems of large waste gas air quantity, low concentration, non-uniform waste gas concentration, large waste gas dissipation quantity, large waste gas treatment device capacity, high device cost, large operation energy consumption and the like are caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a reation kettle waste gas safety collecting system that simple structure, simple to operate, operation energy consumption are low is provided.
In order to solve the problem, the utility model relates to a reation kettle waste gas safety collection system, its characterized in that: the system comprises a reaction kettle, a safe water seal tank and a waste gas mixing sleeve; the top of the reaction kettle is respectively provided with a feeding pipe, a nitrogen input pipe and a vent pipe, and the bottom of the reaction kettle is provided with a discharge pipe; the breather pipe is connected with the safe water seal tank through a single breather valve and a waste gas inlet pipe; a demister is arranged in the safe water seal tank, a water replenishing pipe is arranged on one side of the safe water seal tank, a waste gas conveying pipe is arranged at the top of the safe water seal tank, and a water outlet pipe is arranged at the bottom of the safe water seal tank; the waste gas conveying pipe is connected with the waste gas mixing sleeve, and the waste gas mixing sleeve is connected with a waste gas discharging pipe through a fan.
The exhaust gas mixing sleeve comprises an air suction pipe and a mixer; the air suction pipe is fixedly connected with the waste gas conveying pipe through a support, and one part of the waste gas conveying pipe extends into the air suction pipe; a gap is reserved between the tail end of the waste gas conveying pipe and the mixer; one end of the air suction pipe is communicated with the atmosphere, and the other end of the air suction pipe is connected with the mixer; the mixer is connected with the waste gas discharge pipe through the fan.
And a feeding valve is arranged on the feeding pipe.
The nitrogen input pipe is composed of two branch pipes which are connected in parallel, a cut-off valve is arranged on one branch pipe, and a single suction valve is arranged on the other branch pipe.
And a discharge valve is arranged on the discharge pipe.
And a water replenishing valve is arranged on the water replenishing pipe.
And a check valve is arranged on the waste gas conveying pipe.
And a drain valve is arranged on the water outlet pipe.
And a liquid level detection element is arranged in the safe water seal tank.
The waste gas inlet pipe is inserted below the liquid level in the safe water-sealed tank.
Compared with the prior art, the utility model has the following advantage:
1. the utility model discloses in be equipped with single valve, single breather valve and breather pipe of breathing out, consequently, can guarantee the pressure in the reation kettle through single valve and the single valve of breathing out to in inhaling reation kettle with nitrogen gas through single valve of breathing out, simultaneously through single valve and breather pipe of breathing out will reation kettle interior waste gas cause safe water seal jar in.
2. The utility model discloses well waste gas inlet tube inserts below the liquid level in the safe water seal jar, can prevent that gas in the safe water seal jar from backflowing, and flame stretches to reation kettle when stopping the low reaches accident to catch fire simultaneously.
3. The utility model discloses in be equipped with the defroster, this defroster plays gas-liquid separation's effect, prevents to smuggle the liquid drop secretly in check valve and exhaust gas conveying pipe exhaust waste gas.
4. The utility model discloses well waste gas mixing sleeve includes air suction pipe and blender, relies on the blender with reation kettle's the waste gas that comes out and lean on the inspiratory air rapid misce bene of negative pressure in less space, prevent that waste gas concentration is too high, local enrichment from causing the detonation problem, has effectively avoided the waste gas loss to greatly reduced the waste gas amount of wind.
5. The utility model is provided with the safe water seal tank which can not only prevent flame from spreading to the reaction kettle when downstream fire accident occurs, but also buffer and stabilize the waste gas from the reaction kettle, thereby preventing deflagration caused by large concentration fluctuation of waste gas; meanwhile, the reaction kettle is isolated from the downstream waste gas treatment process, so that the waste gas collection safety performance of the reaction kettle is improved, and the influence of the downstream process on the reaction kettle is avoided.
6. The utility model discloses simple structure, simple to operate, operation energy consumption are low, still can be applicable to the collection of other similar or the waste gas of the same type, like liquid storage tank.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1-a reaction kettle; 11-a feed pipe; 12-nitrogen inlet pipe; 13-a breather pipe; 14-a discharge pipe; 15-a feed valve; 16-a shut-off valve; 17-a single suction valve; 18-a discharge valve; 19-single exhalation valve; 2-sealing the tank with safe water; 21-an exhaust gas inlet pipe; 22-a demister; 23-a water replenishing pipe; 24-a water replenishing valve; 25-an exhaust gas conveying pipe; 26-a one-way valve; 27-a water outlet pipe; 28-a drain valve; 3-an exhaust gas mixing sleeve; 31-an air intake tube; 32-a mixer; 4-a fan; 5-exhaust gas discharge pipe.
Detailed Description
As shown in figure 1, the safe collection system for the waste gas of the reaction kettle comprises a reaction kettle 1, a safe water seal tank 2 and a waste gas mixing sleeve 3. The top of the reaction kettle 1 is respectively provided with a feeding pipe 11, a nitrogen input pipe 12 and a vent pipe 13, and the bottom is provided with a discharge pipe 14; the vent pipe 13 is connected with the safe water seal tank 2 through a single-breath valve 19 and a waste gas inlet pipe 21; a demister 22 is arranged in the safe water-sealed tank 2, a water replenishing pipe 23 is arranged on one side of the safe water-sealed tank, a waste gas conveying pipe 25 is arranged at the top of the safe water-sealed tank, and a water outlet pipe 27 is arranged at the bottom of the safe water-sealed tank; the exhaust gas duct 25 is connected to an exhaust gas mixing sleeve 3, and the exhaust gas mixing sleeve 3 is connected to an exhaust gas discharge pipe 5 via a fan 4.
Wherein: the exhaust gas mixing sleeve 3 includes an air intake pipe 31 and a mixer 32; the air suction pipe 31 is fixedly connected with the waste gas delivery pipe 25 through a support, and a part of the waste gas delivery pipe 25 extends into the air suction pipe 31; the tail end of the waste gas conveying pipe 25 is spaced from the mixer 32; the safety water seal is indirectly communicated with the atmosphere through the distance. One end of the air suction pipe 31 is directly communicated with the atmosphere, and the other end is connected with the mixer 32; the mixer 32 is connected to the exhaust gas discharge pipe 5 by the fan 4.
The air suction pipe 31 is maintained in a negative pressure state by the fan 4 at the outlet of the exhaust gas mixing sleeve 3, and air is sucked from the atmosphere by the negative pressure, mixed with the exhaust gas in the mixer 32, and diluted.
The mixer 32 can take a variety of forms such as swirl, baffling, injection, etc.
The feed pipe 11 is provided with a feed valve 15.
The nitrogen input pipe 12 is composed of two branch pipes connected in parallel, one branch pipe is provided with a stop valve 16, and the other branch pipe is provided with a single suction valve 17.
The discharge pipe 14 is provided with a discharge valve 18.
The water replenishing pipe 23 is provided with a water replenishing valve 24.
The exhaust gas duct 25 is provided with a check valve 26.
The water outlet pipe 27 is provided with a water discharge valve 28.
A liquid level detection element is arranged in the safe water-sealed tank 2. The liquid level detection element is interlocked with the water replenishing valve 24 and the water discharging valve 28 to ensure the liquid level in the safe water seal tank 2. When the liquid level is low, the water replenishing valve 24 is opened to perform water replenishing work, so that the waste gas introducing pipe 21 with low liquid level is prevented from being exposed to the upper part of the liquid level; when the liquid level is high, the drain valve 28 is opened to drain the liquid, and the liquid level is prevented from passing through the demister 22 and entering the exhaust gas duct 25.
The exhaust gas introducing pipe 21 is inserted below the liquid level in the safety water-sealed tank 2 to prevent the gas in the safety water-sealed tank 2 from flowing backwards and simultaneously prevent flame from spreading to the reaction kettle 1 when the downstream is accidentally ignited. The waste gas in the reaction vessel 1 enters the safety water seal through the waste gas introducing pipe 21 and is then discharged through the waste gas conveying pipe 25.
Considering the intermittence of the exhaust gas emission in the reaction kettle 1, the fan 4 comprises a pressure detection element and a frequency converter besides the conventional configuration; the pressure detection element is arranged on the waste gas conveying pipe 25 of the safe water seal tank 2, the pressure detection signal is interlocked with the frequency converter, and the rotating speed of the fan 4 is adjusted according to the pressure on the waste gas conveying pipe 25, so that the purpose of energy conservation is achieved while gas conveying is realized.
When the pressure is displayed on the waste gas conveying pipe 25, the fan 4 is automatically started, and after the fan 4 is started, the air suction pipe 31 of the waste gas mixing sleeve 3 is in a negative pressure state, the waste gas in the reaction kettle 1 from the waste gas conveying pipe 25 and the air from the air suction pipe 25 are sucked into the mixer 32 together to be mixed, and then the mixed gas is conveyed to a downstream waste gas treatment device through the waste gas discharge pipe 5, so that the waste gas conveying work is completed; when no waste gas is discharged, namely the pressure on the waste gas conveying pipe 25 is not displayed, the fan 4 enters a shutdown or standby state, and energy consumption is saved.
The pressure detecting element needs to be installed at a position close to the one-way valve 26 as much as possible, so that the action time of the fan 4 is effectively ensured.
In the working process of the reaction kettle 1, when the pressure in the kettle reaches the rated suction pressure, the single suction valve 17 is opened, and nitrogen enters the reaction kettle 1 through the nitrogen input pipe 12; when the pressure in the kettle reaches the rated exhalation pressure, the single exhalation valve 19 is opened, and the gas in the kettle is discharged through the vent pipe 13. In practical application, nitrogen plays a role of shielding gas, and other gases can be selected as the shielding gas according to materials in the kettle.
Before the reaction kettle 1 is fed, the feeding valve 15 and the discharging valve 18 are both closed, and the stop valve 16 is opened to carry out nitrogen filling and purging.
After the purging is finished, the stop valve 16 is closed, the feeding valve 15 is opened, the discharging valve 18 is closed, the reaction kettle 1 enters a feeding state, materials are charged through the feeding pipe 11, the pressure in the kettle is increased, the single-breath valve 19 is opened, gas in the kettle is discharged through the vent pipe 13, the discharge amount of waste gas in the kettle in the feeding state is large, the concentration is high, and the kettle is in a continuous discharge state.
After feeding is finished, the reaction kettle 1 is in a normal working state, the feeding valve 15 and the discharging valve 18 are both closed, materials are subjected to reactions such as vulcanization, nitration, hydrogenation, alkylation, polymerization, condensation and the like in the kettle, pressure fluctuation in the kettle is caused, and the pressure in the reaction kettle 1 is ensured through the matching of the single suction valve 17 and the single exhaust valve 19. In a normal working state, the reaction kettle 1 or the single suction valve 17 is opened to suck nitrogen and pressurize; or the exhalation valve 19 is opened to perform the exhaust pressure reduction. Under the working condition, the amount of waste gas discharged from the kettle is small, the concentration is low, and the waste gas is in an intermittent discharge state.
When the reaction is finished and the discharging state is carried out, the feeding valve 15 is closed, the discharging valve 18 is opened, the materials are discharged through the discharging pipe 14, the pressure in the kettle is reduced, the single suction valve 17 is opened, nitrogen enters the kettle through the nitrogen input pipe 12, and no waste gas is discharged in the discharging state.
Claims (10)
1. The utility model provides a reation kettle waste gas safety collecting system which characterized in that: the system comprises a reaction kettle (1), a safe water seal tank (2) and a waste gas mixing sleeve (3); the top of the reaction kettle (1) is respectively provided with a feeding pipe (11), a nitrogen input pipe (12) and a vent pipe (13), and the bottom is provided with a discharge pipe (14); the vent pipe (13) is connected with the safe water seal tank (2) through a single exhalation valve (19) and a waste gas inlet pipe (21); a demister (22) is arranged in the safe water-sealed tank (2), a water replenishing pipe (23) is arranged on one side of the safe water-sealed tank, a waste gas conveying pipe (25) is arranged at the top of the safe water-sealed tank, and a water outlet pipe (27) is arranged at the bottom of the safe water-sealed tank; the waste gas conveying pipe (25) is connected with the waste gas mixing sleeve (3), and the waste gas mixing sleeve (3) is connected with a waste gas discharge pipe (5) through a fan (4).
2. The system of claim 1, wherein: the exhaust gas mixing sleeve (3) comprises an air suction pipe (31) and a mixer (32); the air suction pipe (31) is fixedly connected with the waste gas conveying pipe (25) through a support, and one part of the waste gas conveying pipe (25) extends into the air suction pipe (31); the tail end of the waste gas conveying pipe (25) is spaced from the mixer (32); one end of the air suction pipe (31) is directly communicated with the atmosphere, and the other end of the air suction pipe is connected with the mixer 32; the mixer (32) is connected with the waste gas discharge pipe (5) through the fan (4).
3. The system of claim 1, wherein: and a feeding valve (15) is arranged on the feeding pipe (11).
4. The system of claim 1, wherein: the nitrogen input pipe (12) is composed of two branch pipes which are connected in parallel, a cut-off valve (16) is arranged on one branch pipe, and a single suction valve (17) is arranged on the other branch pipe.
5. The system of claim 1, wherein: and a discharge valve (18) is arranged on the discharge pipe (14).
6. The system of claim 1, wherein: and a water replenishing valve (24) is arranged on the water replenishing pipe (23).
7. The system of claim 1, wherein: and a check valve (26) is arranged on the waste gas conveying pipe (25).
8. The system of claim 1, wherein: and a drain valve (28) is arranged on the water outlet pipe (27).
9. The system of claim 1, wherein: and a liquid level detection element is arranged in the safe water-sealed tank (2).
10. The system of claim 1, wherein: the waste gas inlet pipe (21) is inserted into the safe water-sealed tank (2) below the liquid level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120210380.7U CN214973933U (en) | 2021-01-26 | 2021-01-26 | Reation kettle waste gas safety collecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120210380.7U CN214973933U (en) | 2021-01-26 | 2021-01-26 | Reation kettle waste gas safety collecting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214973933U true CN214973933U (en) | 2021-12-03 |
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ID=79143901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120210380.7U Active CN214973933U (en) | 2021-01-26 | 2021-01-26 | Reation kettle waste gas safety collecting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214973933U (en) |
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2021
- 2021-01-26 CN CN202120210380.7U patent/CN214973933U/en active Active
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