CN210674716U - Fatty alcohol waste gas treatment system - Google Patents
Fatty alcohol waste gas treatment system Download PDFInfo
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- CN210674716U CN210674716U CN201921092786.9U CN201921092786U CN210674716U CN 210674716 U CN210674716 U CN 210674716U CN 201921092786 U CN201921092786 U CN 201921092786U CN 210674716 U CN210674716 U CN 210674716U
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Abstract
A fatty alcohol waste gas treatment system comprises a buffer tank, a formaldehyde absorption tower, a water absorption tower and an activated carbon adsorption tower; an inlet of the buffer tank is communicated with waste gas, an outlet of the buffer tank is communicated with an air inlet of the fan through an air inlet pipeline, an air outlet of the fan is communicated with the methanol absorption tower, a first spray header is installed at the top of the methanol absorption tower, the methanol absorption tower is communicated with a first water pump through a first methanol liquid discharge pipe, the first water pump is communicated with one end of a methanol output pipe, the methanol output pipe is communicated with one end of a first reflux pipe, and the other end of the first reflux pipe is communicated with the first spray header; the gas phase outlet of the methanol absorption tower is communicated with the gas inlet of the water absorption tower, the liquid of the water absorption tower is communicated with the inlet of a second water pump, the outlet of the second water pump is communicated with a second drain pipe, the second drain pipe is communicated with one end of a second return pipe, the other end of the second return pipe is communicated with the inlet of a second spray head arranged in the water absorption tower, and the flow direction of a second return check valve is that the second return pipe flows to the second spray head.
Description
Technical Field
The utility model relates to an organic waste gas treatment technology especially relates to a fatty alcohol exhaust-gas treatment system.
Background
Natural fatty alcohols (C8-C10)) are important raw materials for the production of plasticizers, and have great market demand. The waste gas generated in the production of natural fatty alcohol contains fatty alcohol, fatty acid methyl ester, methanol and glycol. At present, the waste gas is generally treated by burning, but obviously, the method causes great resource waste and treatment cost.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned defects in the prior art, the technical problem to be solved in the present invention is to provide a fatty alcohol waste gas treatment system, which can recover fatty acid methyl ester, methanol, glycol, and fatty alcohol in the waste gas.
In order to achieve the aim, the utility model provides a fatty alcohol waste gas treatment system, which comprises a buffer tank, a formaldehyde absorption tower and a water absorption tower; the inlet of the buffer tank is communicated with waste gas containing glycol, methanol, fatty alcohol and fatty acid methyl ester, the outlet of the buffer tank is communicated with the air inlet of the fan through an air inlet pipeline, the air outlet of the fan is communicated with the gas inlet at the bottom of the methanol absorption tower, a first spray header is installed at the top of the methanol absorption tower, liquid methanol is introduced into the top of the methanol absorption tower through a pipeline, the liquid at the bottom of the methanol absorption tower is communicated with the inlet of a first water pump through a first methanol liquid discharge pipe, the outlet of the first water pump is communicated with one end of a methanol output pipe, the methanol output pipe is communicated with one end of a first return pipe, and the other end of the first return pipe is communicated with the inlet of;
the top of the methanol absorption tower is communicated with a gas inlet at the bottom of the water absorption tower through a waste gas feed pipe, liquid at the bottom of the water absorption tower is communicated with an inlet of a second water pump through a first water drain pipe, an outlet of the second water pump is communicated with an external wastewater treatment device through a second water drain pipe, the second water drain pipe is communicated with one end of a second backflow pipe, the other end of the second backflow pipe is communicated with an inlet of a second spray header arranged in the water absorption tower, and the flow direction of a second backflow check valve is from the second water drain pipe to the second spray header; the second spray header is installed on the top of the water absorption tower, and water is connected to the top of the second spray header.
Preferably, the other end of the methanol output pipe is connected to the methanol rectifying tower for further refining, a first stop valve is installed on the methanol output pipe in series and used for controlling the on-off of the methanol output pipe, and the part of the methanol output pipe between the first stop valve and the first water pump is also communicated with one end of the first return pipe.
Preferably, a second stop valve for controlling the on-off of the second water pump is installed on the second water drainage pipe in series, and the part of the second water drainage pipe, which is located between the second stop valve and the second water pump, is communicated with one end of the second return pipe.
Preferably, the first return pipe is provided with a first return check valve in series, and the second return pipe is provided with a second return check valve in series.
Preferably, the top of the water absorption tower is communicated with the tail gas purification system through an air feed pipe, and is exhausted through an exhaust pipe after being adsorbed by activated carbon of the tail gas purification system.
Preferably, the tail gas purification system comprises two activated carbon adsorption towers, one activated carbon adsorption tower is selected for use, the activated carbon adsorption tower comprises an outer box and an inner box, the inner box is installed in the outer box, a heat preservation gap is formed between the inner box and the inner wall of the outer box, and a first coil is installed in the heat preservation gap;
at least two heating plates are fixed in the inner box, air passing holes and heating strips are arranged on the heating plates, and activated carbon is filled in the inner box and used for adsorbing VOC; the top of the inner side of the inner box is respectively communicated with one end of a first auxiliary access pipe, one end of a second auxiliary access pipe and one end of a third auxiliary access pipe;
the air supply pipe is communicated with an inlet of the first reversing valve, a first outlet and a second outlet of the first reversing valve are respectively communicated with the other ends of the first auxiliary access pipes of the two activated carbon adsorption towers, and the first reversing valve is used for selecting one of the inlets to be communicated with one of the first auxiliary access pipes when in use; the first access pipe is communicated with an inlet of the first one-way valve, and an outlet of the first one-way valve is communicated with the exhaust pipe, so that the treated gas is discharged.
Preferably, the second auxiliary access pipe is communicated with an inlet of a fourth one-way valve, an outlet of the fourth one-way valve is communicated with a condensation access port of a condenser, and a condensation access outlet of the condenser is communicated with an inlet of the storage tank; the second access pipe is communicated with an inlet of a second one-way valve, and an outlet of the second one-way valve is communicated with an inlet of the storage tank; and the third auxiliary access pipe is communicated with an inlet of a third one-way valve, and an outlet of the third one-way valve is communicated with a condensation access port of the condenser.
Preferably, the other ends of the third access pipes of the two activated carbon adsorption towers are respectively communicated with a first outlet and a second outlet of a second reversing valve, an inlet of the second reversing valve is communicated with an outlet of a steam pump, the steam pump belongs to a steam system, the steam system further comprises a booster water pump, an inlet of the booster water pump is communicated with a water source, an outlet of the booster water pump is communicated with an inlet of an atomizer, the atomizer is used for atomizing water, an outlet of the atomizer is communicated with a first inlet of a third reversing valve, a second inlet of the third reversing valve is communicated with an external air source, an outlet of the third reversing valve is communicated with one end of a heating gap of a heater, and the third reversing valve is used for selecting one to enable the first inlet and the second inlet to be communicated with the outlet of the third reversing valve;
the heater comprises a second shell and a second shell, an installation gap is formed between the first shell and the second shell, a second coil is installed in the installation gap, first heating baffles and second heating baffles which are arranged in a staggered mode are installed in the second shell, a heating gap is formed between the first heating baffles and the second heating baffles, and the other end of the heating gap is communicated with an inlet of the steam pump;
the first heating baffle and the second heating baffle are made of iron materials, alternating current is introduced into the second coil, and one of the second reversing valves is communicated with one of the third access pipes.
Preferably, the heat insulation gap is filled with a heat insulation material; the installation gap is filled with heat insulation cotton.
The utility model has the advantages that:
the utility model discloses ingeniously absorb methanol and the combination of water absorption, absorb fatty alcohol and fatty acid methyl ester in the waste gas with methanol promptly, reuse water absorbs methanol and ethylene glycol in the waste gas, has solved fatty alcohol and fatty acid methyl ester can not be by the contradiction of water absorption. The utility model discloses accessible second grade absorption and active carbon adsorption for fatty alcohol tail gas exhaust concentration can satisfy national and local emission standard. Moreover, the VOC recovery rate of the utility model can reach more than 99 percent, the resource utilization rate is increased, and the economic benefit is obvious. Finally, the utility model discloses a moving parts is few, and maintenance work volume is few, and the operation is reliable.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the exhaust gas purification system of the present invention.
Fig. 3 is an enlarged view at F1 in fig. 2.
Fig. 4 is a schematic diagram of the steam system of the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Referring to fig. 1, the fatty alcohol waste gas treatment system of this embodiment includes a buffer tank 110, an inlet of the buffer tank 110 is communicated with waste gas containing ethylene glycol, methanol, fatty alcohol, and fatty acid methyl ester, an outlet of the buffer tank 110 is communicated with an air inlet of a fan 210 through an air inlet pipe 111, an exhaust port of the fan 210 is communicated with an air inlet at the bottom of a methanol absorption tower 120 (methanol tail gas absorption tower, which is a prior art, and is directly installed by using existing equipment in this embodiment), a first spray header 331 is installed at the top of the methanol absorption tower 120, the top of the methanol absorption tower 120 is connected with liquid methanol through a pipe, liquid at the bottom of the methanol absorption tower 120 is communicated with an inlet of a first water pump 220 through a first methanol liquid discharge pipe 121, an outlet of the first water pump 220 is communicated with one end of a methanol output pipe 221, and the other end of the methanol output pipe 221 is connected to a, and the methanol output pipe 221 is provided with a first stop valve 311 in series, the first stop valve 311 is used for controlling the on-off of the methanol output pipe 221, the part of the methanol output pipe 221, which is positioned between the first stop valve 311 and the first water pump 220, is also communicated with one end of a first return pipe 222, the first return pipe 222 is provided with a first return check valve 321 in series, and the other end of the first return pipe 222 is communicated with an inlet of a first spray header 331, so that when in use, the first water pump can pump liquid methanol and mixed liquid to the first spray header 331 to spray out so as to enable liquid drops of the first spray header 331 to be fully contacted with waste gas, thereby increasing the dissolving efficiency, namely increasing the recovery rate of organic matters in the waste gas. Of course, top-entering methanol may also be sprayed out through the first showerhead 331.
The top of the methanol absorption tower 120 is communicated with a gas inlet at the bottom of the water absorption tower 130 through a waste gas feed pipe 122, the water absorption tower 130 has the same structure as the methanol absorption tower 120, liquid at the bottom of the water absorption tower 130 is communicated with an inlet of a second water pump 230 through a first drain pipe 131, an outlet of the second water pump 230 is communicated with an external wastewater treatment device through a second drain pipe 231, a second stop valve 312 for controlling the on-off of the second drain pipe 231 is installed on the second drain pipe 231 in series, a part of the second drain pipe 231, which is located between the second stop valve 312 and the second water pump 230, is communicated with one end of a second return pipe 232, a second return check valve 322 is installed on the second return pipe 232 in series, the other end of the second return pipe 232 is communicated with an inlet of a second spray header 332 installed in the water absorption tower 130, and the flow direction of the second return check valve is from the second drain pipe;
the second spray header 332 is installed at the top of the water absorption tower 130, water is also connected to the top of the second spray header 332, the water can be directly connected to the second spray header 332 and then sprayed out, the top of the water absorption tower 130 is communicated with the tail gas purification system through the air supply pipe 132, and the water is exhausted through the exhaust pipe 240 after being adsorbed by the activated carbon of the tail gas purification system.
In use, the waste gas mixed with the organic matters enters the buffer tank 110, and then is sucked into the methanol absorption tower 120 by the fan 210. The first water pump is started, the first stop valve 310 is closed, the first water pump pumps liquid methanol to the first spray header 311, the liquid is pressurized and refined and then is sprayed out, the sprayed liquid falls from top to bottom, and the waste gas rises from bottom to top, so that the waste gas is fully contacted with the sprayed methanol to dissolve organic matters in the waste gas, and meanwhile, the liquid methanol can enter the top of the methanol absorption tower to supplement the methanol.
The gas absorbed and received with methanol is sent to the bottom of the water absorption tower 130 through the waste gas feed pipe 122, the second water pump 230 pumps the water in the water absorption tower to the second spray header 322 (the second stop valve is closed), and then the water is sprayed out, the water can fully contact with the waste gas, thereby dissolving the methanol and other water-soluble organic matters in the waste gas, in addition, the water in the water absorption tower can be supplemented through the top of the water absorption tower, and the waste gas after contacting with the water is sent into the tail gas purification system through the feed pipe 132 at the top of the water absorption tower 130 for purification and then is discharged through the exhaust pipe 240.
The tail gas of the implementation firstly enters a methanol absorption tower, the methanol absorbs the fatty alcohol, fatty acid methyl ester and hexanediol in the tail gas to a liquid phase, and the liquid phase material can be recycled in the existing methanol rectifying tower. At the moment, the tail gas only contains methanol, so that the trouble caused by the absorption of subsequent water by fatty alcohol and fatty acid methyl ester can be avoided; the cascade structure of the methanol absorption tower and the water absorption tower mainly has the main functions of absorbing water-insoluble fatty alcohol and fatty acid methyl ester by using methanol and then absorbing water-soluble glycol and methanol by using water.
The fatty alcohol and the fatty acid methyl ester are a mixture of C8-C12, are insoluble in water, have high melting points, can be solidified at 5-7 ℃, and are soluble in methanol. Therefore, methanol is used as an absorbent to absorb organic matters such as fatty alcohol, fatty acid methyl ester, hexanediol and the like in the tail gas, then the methanol in the tail gas is washed and absorbed by aqueous solution, and finally the methanol is absorbed by an activated carbon absorption tower, so that the concentration of the methanol and the non-methane total hydrocarbons in the tail gas are lower than the emission requirement. The purified gas is discharged into the atmosphere, and the methanol absorption liquid can be recycled in the existing methanol rectifying tower.
The organic matter in the tail gas at the top of the water absorption tower in this embodiment theoretically reaches the emission standard. However, in order to ensure the removal of organic matter (unknown low waste, light components) in the gas phase, adsorption through an activated carbon adsorption tower is required, so that the emission is up to standard.
In the practical implementation of this embodiment, the states of the equipment and the tail gas are as follows (table one):
watch 1
After passing through the methanol absorption tower, the absorption of the waste gas is as follows (table two):
watch two
After passing through the water absorption column, the absorption of methanol and the like was as follows (table three):
watch III
Can derive by table one to table three, the utility model discloses organic matter in to waste gas has the advantage of higher rate of recovery, has not only retrieved the organic matter moreover, has still reduced the organic matter in the emission tail gas to reduce the emission of later stage organic matter.
Referring to fig. 1 to 4, the exhaust gas purification system includes two activated carbon adsorption towers a, the activated carbon adsorption towers are used alternatively, the activated carbon adsorption towers include an outer box a110 and an inner box a120, the inner box a120 is installed inside the outer box a110, a heat preservation gap a111 is formed between the inner box a120 and the inner wall of the outer box a110, a first coil a210 is installed in the heat preservation gap a111, a heat preservation material a411 is filled in the heat preservation gap a111, and the heat preservation material a411 is a heat insulation material, such as heat insulation foam.
At least two heating plates A130 are fixed in the inner box A120, air passing holes A131 and heating strips A132 are arranged on the heating plates A130, activated carbon A412 is filled in the inner box A120, and the activated carbon A412 is used for adsorbing VOCs. The heating plate and the heating strip are made of iron materials, alternating current is introduced into the first coil A210, so that an alternating magnetic field is generated, and the heating plate A130 generates heat through the alternating magnetic field to heat the activated carbon.
The top of the inner side of the inner box A120 is respectively communicated with one end of a first auxiliary access pipe A151, one end of a second auxiliary access pipe A152 and one end of a third auxiliary access pipe A153, and the bottom of the inner side of the inner box A120 is respectively communicated with one end of a first access pipe A141, one end of a second access pipe A142 and one end of a third access pipe A143;
the air feeding pipe 132 is communicated with an inlet of a first reversing valve A211, a first outlet and a second outlet of the first reversing valve A211 are respectively communicated with the other ends of first auxiliary access pipes A151 of the two activated carbon adsorption towers, and when the heat exchanger is used, the first reversing valve A211 is used for selecting one of the first auxiliary access pipes A151 to communicate the inlet of the first auxiliary access pipe A211 with one of the first auxiliary access pipes A151, so that the heat exchange gas discharged by the heat exchanger 150 is conveyed into one of the activated carbon adsorption towers.
The first inlet pipe a141 communicates with an inlet of the first check valve a221, and an outlet of the first check valve a221 communicates with the exhaust pipe 240, thereby discharging the treated gas. The second auxiliary access pipe a152 is communicated with an inlet of a fourth one-way valve a224, an outlet of the fourth one-way valve a224 is communicated with a condensation access port of a condenser a250, and a condensation access port of the condenser a250 is communicated with an inlet of a storage tank a260, so that condensed water flows back to the storage tank a260 to be stored.
The second access pipe a142 is communicated with an inlet of a second one-way valve a222, and an outlet of the second one-way valve a222 is communicated with an inlet of the storage tank a260, so that the liquid during cleaning flows into the storage tank a260 for storage.
The third auxiliary access pipe a153 is communicated with an inlet of a third one-way valve a223, an outlet of the third one-way valve a223 is communicated with a condensation access port of a condenser a250, so that water vapor during drying is condensed, and the condensed gas is directly discharged or input into the air feed pipe 132 for further treatment;
the other ends of third access pipes A143 of the two activated carbon adsorption towers are respectively communicated with a first outlet and a second outlet of a second reversing valve A212, an inlet of the second reversing valve A212 is communicated with an outlet of a steam pump A273, the steam pump A273 belongs to a steam system, the steam system further comprises a booster water pump A271, an inlet of the booster water pump A271 is communicated with a water source, an outlet of the booster water pump A271 is communicated with an inlet of an atomizer A272, the atomizer A272 is used for atomizing water, an outlet of the atomizer A272 is communicated with a first inlet of a third reversing valve A213, a second inlet of the third reversing valve A213 is communicated with an external air source (atmosphere), an outlet of the third reversing valve A213 is communicated with one end of a heating gap A333 of a heater A300, and the third reversing valve A213 is used for selecting one to ensure that the first inlet and the second inlet are communicated with the outlet thereof;
the heater A300 comprises a second shell A310 and a second shell A320, an installation gap A311 is formed between the first shell A310 and the second shell A320, a second coil A280 is installed in the installation gap A311, heat insulation cotton A420 is filled in the installation gap A311, first heating baffles A331 and second heating baffles A332 which are arranged in a staggered mode are installed in the second shell A320, a heating gap A333 is formed between the first heating baffles A331 and the second heating baffles A332, and the other end of the heating gap A333 is communicated with an inlet of a steam pump A273;
the first heating baffle A331 and the second heating baffle A332 are made of iron materials, alternating current is introduced into the second coil, so that an alternating magnetic field is generated, the alternating magnetic field enables the first heating baffle A331 and the second heating baffle A332 to generate heat, atomized water vapor is heated by the generated heat to be rapidly changed into water vapor, the water vapor is output to the second reversing valve A212 through the steam pump A273, and one of the third access pipes A143 is selected from the second reversing valve A212.
In this embodiment, when in use, the first direction changing valve connects the air feeding pipe 132 with the first sub-inlet pipe a151 of the left activated carbon adsorption tower, and the air flow enters the activated carbon adsorption tower, is filtered, and is discharged to the exhaust pipe 240 through the first inlet pipe a141 and the first check valve a 221.
When the activated carbon adsorption tower needs to be cleaned, the first reversing valve A211 cuts off the communication with the first auxiliary access pipe A151 of the activated carbon adsorption tower and communicates with the first auxiliary access pipe A151 of another activated carbon adsorption tower (the activated carbon adsorption tower on the right side); then the airflow is discharged after being processed by the right activated carbon adsorption tower.
Meanwhile, the inlet of the second reversing valve is communicated with the third access pipe A143 of the left activated carbon adsorption tower, the booster water pump A271, the second coil A280, the first coil A210, the steam pump A273 and the condenser A250 are all electrified and started, the booster pump A271 boosts water and then inputs the water into the atomizer to atomize the water mist, then enters the heating gap A333 under the negative pressure generated by the steam pump A273 to the heating gap A333, the first heating baffle A331 and the second heating baffle A332 are respectively heated, then the water mist is heated by self-generated heat, so that the water mist is rapidly changed into high-temperature water vapor, then the high-temperature water vapor enters a steam pump A273, the activated carbon is washed by the high-temperature water vapor through the steam pump A273, the VOC adsorbed by the activated carbon is cleaned, the liquid generated in the cleaning process flows into a storage tank A260 through a second access pipe A142, and the gas generated in the cleaning process is respectively condensed in a condenser and then discharged, and the liquid is input into a storage tank for storage. In this process, the alternating magnetic field generated by the first coil heats the heating plate, thereby increasing the cleaning efficiency.
After the steam cleaning is finished, an external air source of a third reversing valve A213 is communicated with a heating gap A333, an atomizer A272 is disconnected with the heating gap, then a steam pump is started, external air is pumped into the heating gap and heated into high-temperature air, the high-temperature air dries the activated carbon, a booster water pump A271, a second coil A280, a first coil A210, a steam pump A273 and a condenser A250 respectively stop running after drying, so that the cleaning is finished, and the cleaned activated carbon adsorption tower enters a standby state and repeats the steps.
This kind of design makes the utility model discloses can realize uninterrupted work to increase of production, reduce cost, the washing of active carbon can increase active carbon life moreover, thereby reduces admittedly useless, reduce use cost.
The details of the present invention are well known to those skilled in the art.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (9)
1. A fatty alcohol waste gas treatment system comprises a buffer tank, a formaldehyde absorption tower and a water absorption tower; the inlet of the buffer tank is communicated with waste gas containing glycol, methanol, fatty alcohol and fatty acid methyl ester, and the device is characterized in that: an outlet of the buffer tank is communicated with an air inlet of the fan through an air inlet pipeline, an air outlet of the fan is communicated with an air inlet at the bottom of the methanol absorption tower, a first spray head is installed at the top of the methanol absorption tower, liquid methanol is connected to the top of the methanol absorption tower through a pipeline, liquid at the bottom of the methanol absorption tower is communicated with an inlet of a first water pump through a first methanol liquid discharge pipe, an outlet of the first water pump is communicated with one end of a methanol output pipe, the methanol output pipe is communicated with one end of a first reflux pipe, and the other end of the first reflux pipe is communicated with an inlet of the first spray;
the top of the methanol absorption tower is communicated with a gas inlet at the bottom of the water absorption tower through a waste gas feed pipe, liquid at the bottom of the water absorption tower is communicated with an inlet of a second water pump through a first water drain pipe, an outlet of the second water pump is communicated with an external wastewater treatment device through a second water drain pipe, the second water drain pipe is communicated with one end of a second backflow pipe, the other end of the second backflow pipe is communicated with an inlet of a second spray header arranged in the water absorption tower, and the flow direction of a second backflow check valve is from the second water drain pipe to the second spray header; the second spray header is installed on the top of the water absorption tower, and water is connected to the top of the second spray header.
2. The fatty alcohol off-gas treatment system as set forth in claim 1, wherein: the other end of the methanol output pipe is connected into the methanol rectifying tower for further refining, a first stop valve is installed on the methanol output pipe in series and used for controlling the on-off of the methanol output pipe, and the part of the methanol output pipe between the first stop valve and the first water pump is communicated with one end of the first return pipe.
3. The fatty alcohol off-gas treatment system as set forth in claim 1, wherein: and a second stop valve for controlling the on-off of the second water pump is arranged on the second water drainage pipe in series, and the part of the second water drainage pipe between the second stop valve and the second water pump is communicated with one end of a second return pipe.
4. The fatty alcohol off-gas treatment system of claim 3, wherein: a first backflow check valve is installed on the first backflow pipe in series, and a second backflow check valve is installed on the second backflow pipe in series.
5. The fatty alcohol off-gas treatment system as set forth in claim 1, wherein: the top of the water absorption tower is communicated with a tail gas purification system through an air supply pipe and is exhausted through an exhaust pipe after being adsorbed by activated carbon of the tail gas purification system.
6. The fatty alcohol off-gas treatment system of claim 5, wherein: the tail gas purification system comprises two active carbon adsorption towers, one active carbon adsorption tower is selected for use, the active carbon adsorption tower comprises an outer box and an inner box, the inner box is arranged in the outer box, a heat preservation gap is formed between the inner box and the inner wall of the outer box, and a first coil is arranged in the heat preservation gap;
at least two heating plates are fixed in the inner box, air passing holes and heating strips are arranged on the heating plates, and activated carbon is filled in the inner box and used for adsorbing VOC; the top of the inner side of the inner box is respectively communicated with one end of a first auxiliary access pipe, one end of a second auxiliary access pipe and one end of a third auxiliary access pipe;
the air supply pipe is communicated with an inlet of the first reversing valve, a first outlet and a second outlet of the first reversing valve are respectively communicated with the other ends of the first auxiliary access pipes of the two activated carbon adsorption towers, and the first reversing valve is used for selecting one of the inlets to be communicated with one of the first auxiliary access pipes when in use; the first access pipe is communicated with an inlet of the first one-way valve, and an outlet of the first one-way valve is communicated with the exhaust pipe, so that the treated gas is discharged.
7. The fatty alcohol off-gas treatment system of claim 6, wherein: the second auxiliary access pipe is communicated with an inlet of a fourth one-way valve, an outlet of the fourth one-way valve is communicated with a condensation access port of a condenser, and a condensation access port of the condenser is communicated with an inlet of the storage tank; the second access pipe is communicated with an inlet of a second one-way valve, and an outlet of the second one-way valve is communicated with an inlet of the storage tank; and the third auxiliary access pipe is communicated with an inlet of a third one-way valve, and an outlet of the third one-way valve is communicated with a condensation access port of the condenser.
8. The fatty alcohol off-gas treatment system as set forth in claim 6 or 7, wherein: the other ends of third access pipes of the two activated carbon adsorption towers are respectively communicated with a first outlet and a second outlet of a second reversing valve, an inlet of the second reversing valve is communicated with an outlet of a steam pump, the steam pump belongs to a steam system, the steam system further comprises a booster water pump, an inlet of the booster water pump is communicated with a water source, an outlet of the booster water pump is communicated with an inlet of an atomizer, the atomizer is used for atomizing water, an outlet of the atomizer is communicated with a first inlet of a third reversing valve, a second inlet of the third reversing valve is communicated with an external air source, an outlet of the third reversing valve is communicated with one end of a heating gap of a heater, and the third reversing valve is used for selecting one to enable the first inlet and the second inlet to be communicated with the outlet of the third reversing valve;
the heater comprises a second shell and a second shell, an installation gap is formed between the first shell and the second shell, a second coil is installed in the installation gap, first heating baffles and second heating baffles which are arranged in a staggered mode are installed in the second shell, a heating gap is formed between the first heating baffles and the second heating baffles, and the other end of the heating gap is communicated with an inlet of the steam pump;
the first heating baffle and the second heating baffle are made of iron materials, alternating current is introduced into the second coil, and one of the second reversing valves is communicated with one of the third access pipes.
9. The fatty alcohol off-gas treatment system of claim 8, wherein: the heat insulation gap is filled with heat insulation materials; the installation gap is filled with heat insulation cotton.
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| CN201921092786.9U CN210674716U (en) | 2019-07-12 | 2019-07-12 | Fatty alcohol waste gas treatment system |
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| CN201921092786.9U CN210674716U (en) | 2019-07-12 | 2019-07-12 | Fatty alcohol waste gas treatment system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113797689A (en) * | 2021-09-28 | 2021-12-17 | 山东口天环保设备科技有限责任公司 | Industrial waste gas treatment device and use method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113797689A (en) * | 2021-09-28 | 2021-12-17 | 山东口天环保设备科技有限责任公司 | Industrial waste gas treatment device and use method thereof |
| CN113797689B (en) * | 2021-09-28 | 2022-11-22 | 河北建滔能源发展有限公司 | Industrial waste gas treatment device and use method thereof |
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