CN218475086U - VOCs purifies and adsorbs concentrated combustion system with multistage runner - Google Patents
VOCs purifies and adsorbs concentrated combustion system with multistage runner Download PDFInfo
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- CN218475086U CN218475086U CN202222392746.4U CN202222392746U CN218475086U CN 218475086 U CN218475086 U CN 218475086U CN 202222392746 U CN202222392746 U CN 202222392746U CN 218475086 U CN218475086 U CN 218475086U
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Abstract
The utility model discloses a multistage rotating wheel adsorption concentration combustion system for VOCs purification, which comprises a plurality of zeolite rotating wheels, a zeolite rotating wheel fan, an exhaust funnel, a desorption high-temperature heat exchanger, a desorption fan and a combustion unit; the waste gas input pipeline is connected with the adsorption area of the primary zeolite rotating wheel; the adsorption zones of the zeolite runners are connected in series in sequence; the adsorption zone of the multistage zeolite rotating wheel, the zeolite rotating wheel fan and the exhaust funnel are sequentially connected; the cooling area of the first-stage zeolite rotating wheel is connected with a waste gas input pipeline; the cooling zones of the zeolite rotating wheels are connected in sequence; the cooling zone of the multistage zeolite runner is connected with a desorption high-temperature heat exchanger; the desorption high-temperature heat exchanger is connected with a desorption main pipeline; the desorption main pipeline is respectively connected with the desorption region of each zeolite rotating wheel; the desorption area of each zeolite rotating wheel is connected with a desorption fan; the desorption fan is connected with the combustion unit; the combustion chamber of the combustion unit is connected with the desorption high-temperature heat exchanger. The utility model has the advantages of high purification efficiency, good stability, low investment and operation cost, etc.
Description
Technical Field
The utility model belongs to the organic waste gas treatment field relates to a waste gas treatment system, especially relates to a VOCs purifies and adsorbs concentrated combustion system with multistage runner.
Background
The industrial volatile organic waste gases (VOCs) generally have the characteristics of large air quantity and low concentration, the adsorption method is an ideal process for treating the low-concentration organic waste gases, but the problem of large adsorbent consumption exists, and on one hand, the waste adsorbent belongs to hazardous waste, is difficult to treat and is not environment-friendly; on the other hand, the cost for replacing the adsorbent is high, and enterprises are difficult to bear. VOCs is administered to the combustion method, has purification efficiency height and the stable outstanding advantage of operation, when nevertheless handling low concentration VOCs, needs additionally provide the heat source, and the operation energy consumption is higher relatively, wherein heat accumulation formula burning (RTO) and heat accumulation formula catalytic combustion (RCO) owing to have the heat accumulation function, can effectively reduce energy consumption, obtain wide application in high concentration VOCs field at present.
For large-air-volume low-concentration VOCs waste gas, the combined process of adsorption and combustion can integrate the advantages of the two processes. After the adsorbent adsorbs a certain amount of VOCs, the adsorbent is desorbed and regenerated through small air amount hot air, and the regenerated tail gas enters a combustion device for combustion. The zeolite rotating wheel has the advantages of large specific surface area, uniform micropores and good regeneration performance, and the combined adsorption and concentration-RTO/RCO process of the zeolite rotating wheel can efficiently adsorb the low-concentration VOCs and also can obviously save investment and operation cost, thereby becoming a preferred process for the high-air-quantity low-concentration VOCs.
Along with the environmental protection requirement is more and more strict, and the total limit of many regional VOCs is criticized, and discharge to reach standard is only the minimum requirement of environmental protection, and many enterprises still need satisfy the total amount control requirement, even if the VOCs of big wind-volume low concentration administers, purification efficiency also generally requires to reach more than 95%. At present, the treatment process capable of stably achieving the purification efficiency is commonly a combustion method, but is unacceptable for enterprises with investment and operation costs; the purification efficiency of the preferred zeolite rotary wheel adsorption concentration-RTO/RCO combined process can only reach about 90 percent, so that the process is limited in application.
SUMMERY OF THE UTILITY MODEL
The utility model provides a VOCs purifies and adsorbs concentrated combustion system with multistage runner to overcome prior art's defect.
In order to achieve the above object, the utility model provides a VOCs purifies and adsorbs concentrated combustion system with multistage runner has such characteristic: the device comprises a plurality of zeolite rotating wheels, a zeolite rotating wheel fan, an exhaust funnel, a desorption high-temperature heat exchanger, a desorption fan and a combustion unit; the zeolite rotating wheel is divided into an adsorption area, a desorption area and a cooling area, the position of each partition is fixed, and the zeolite rotating wheel rotates according to the sequence of the adsorption area, the desorption area and the cooling area and sequentially alternates; the zeolite rotating wheels are sequentially from a first-stage zeolite rotating wheel to a multi-stage zeolite rotating wheel; the waste gas input pipeline is connected with an inlet of an adsorption area of the primary zeolite rotating wheel; adsorption zones of a plurality of zeolite runners are sequentially connected in series through pipelines; the outlet of the adsorption zone of the multistage zeolite rotating wheel, a zeolite rotating wheel fan and an exhaust funnel are sequentially connected through a pipeline; the inlet of the cooling area of the primary zeolite rotating wheel is connected with a waste gas input pipeline through a pipeline; the cooling zones of the zeolite rotating wheels are sequentially connected through a pipeline, and meanwhile, except for the first-stage zeolite rotating wheel, the inlets of the cooling zones of the rest zeolite rotating wheels are connected with the outlet of the adsorption zone of the previous-stage zeolite rotating wheel through a pipeline; the outlet of the cooling area of the multistage zeolite runner is connected with the inlet of the heating channel of the desorption high-temperature heat exchanger through a pipeline; an outlet of a temperature rise channel of the desorption high-temperature heat exchanger is connected with a desorption main pipeline; the desorption main pipeline is respectively connected with the desorption region of each zeolite runner through a pipeline (namely the desorption regions of a plurality of zeolite runners are connected in parallel); the desorption area of each zeolite rotating wheel is connected with a desorption fan through a pipeline; the desorption fan is connected with an air inlet pipeline of the combustion unit; an exhaust pipeline of the combustion unit is connected with an exhaust cylinder; the combustion chamber of the combustion unit is connected with the inlet of the cooling channel of the desorption high-temperature heat exchanger through a pipeline, and the outlet of the cooling channel of the desorption high-temperature heat exchanger is connected with the exhaust funnel through a pipeline.
Further, the utility model provides a VOCs purifies and adsorbs concentrated combustion system with multistage runner can also have such characteristic: wherein, the desorption main pipeline is connected with an outlet of a cooling area of the multistage zeolite runner through a pipeline.
Further, the utility model provides a VOCs purifies and adsorbs concentrated combustion system with multistage runner can also have such characteristic: besides the primary zeolite rotating wheel, the waste gas input pipeline is also connected with inlets of adsorption zones of the rest zeolite rotating wheels through pipelines.
Further, the utility model provides a VOCs purifies and adsorbs concentrated combustion system with multistage runner can also have such characteristic: wherein, be equipped with the preliminary treatment filter on the waste gas input pipeline.
Further, the utility model provides a VOCs purifies and adsorbs concentrated combustion system with multistage runner can also have such characteristic: wherein, still be equipped with the surge tank on the waste gas input pipeline, be located the front side of preliminary treatment filter.
Further, the utility model provides a VOCs purifies and adsorbs concentrated combustion system with multistage runner can also have such characteristic: and a flame arrester is arranged on the pipeline on the front side of the desorption fan.
Further, the utility model provides a VOCs purifies and adsorbs concentrated combustion system with multistage runner can also have such characteristic: wherein, the pipeline between desorption fan and spark arrester still is connected with the fresh air pipeline that can let in the new trend.
Further, the utility model provides a VOCs purifies and adsorbs concentrated combustion system with multistage runner can also have such characteristic: wherein the combustion unit is an RTO or an RCO.
The beneficial effects of the utility model reside in that: the utility model provides a VOCs purifies uses multistage runner absorption concentration combustion system is the VOCs comprehensive purification efficiency and stably reaches the concentrated combined system of absorption more than 95%, solves the problem of disconnected shelves between the conventional big wind-volume low concentration VOCs purification efficiency 92% -98%. While ensuring high purification efficiency, the investment and operating costs are relatively low. Specifically, the system has the following advantages:
1. the purification efficiency is high: the adsorption efficiency of a general primary rotating wheel can reach 92%, the conventional RTO/RCO efficiency is 98%, and the comprehensive purification efficiency of the zeolite rotating wheel and the RTO is about 90%; the system can improve the adsorption efficiency to more than 98% by arranging the mode of connecting the multistage zeolite runners in series, and the comprehensive purification efficiency of the multistage zeolite runners and RTO/RCO can reach more than 96%.
2. The stability is good: because the adsorption capacity of the zeolite molecular sieve is not high, when the fluctuation of the inlet gas concentration is large, the single-stage zeolite rotating wheel can not ensure the discharge reaching the standard; set up multistage zeolite runner, when the concentration of admitting air is higher than the design value, back level zeolite runner can continue to adsorb the unable absorbent VOCs of preceding stage zeolite runner, ensures purification efficiency. In addition, when the waste gas contains a small amount of easily polymerized and high-boiling-point substances, the front-stage zeolite rotating wheel can be independently activated and regenerated at high temperature (the regeneration temperature can reach 300 ℃), and the rear-stage rotating wheel and the RTO/RCO can continuously operate without interrupting production.
3. The investment and operation cost is low: because the waste gas is concentrated, the RTO/RCO with relatively high investment can be miniaturized and lightened, and the occupied area and the investment are saved. After the waste gas is concentrated, the air volume is reduced, the concentration is increased, the consumption of natural gas is reduced, and the operating cost is obviously reduced.
Drawings
FIG. 1 is a schematic diagram of a multiple stage rotary wheel adsorptive enrichment combustion system for VOCs purification.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1, the utility model provides a VOCs purifies uses multistage runner to adsorb concentrated combustion system, including a plurality of zeolite runners 1, zeolite runner fan 2, aiutage 3, desorption high temperature heat exchanger 4, desorption fan 5 and combustion unit 6.
The zeolite runner 1 is divided into three subareas, namely an adsorption area 101, a desorption area 103 and a cooling area 102, and the position of each subarea is fixed. The zeolite runner 1 rotates at a certain rotation speed (1-8 r/h), and the zeolite runner 1 rotates according to the sequence of the adsorption zone 101, the desorption zone 103 and the cooling zone 102, and the rotation is alternated in sequence.
According to the flowing direction of the waste gas, the plurality of zeolite rotating wheels 1 are a first-stage zeolite rotating wheel to a multi-stage (namely, the last stage) zeolite rotating wheel in sequence.
The waste gas input pipeline 7 is connected with the inlet of the adsorption zone 101 of the primary zeolite runner. The adsorption zones 101 of the zeolite runners 1 are connected in series in sequence through pipelines. The outlet of the adsorption zone 101 of the multistage zeolite rotating wheel, the zeolite rotating wheel fan 2 and the exhaust funnel 3 are connected in sequence through pipelines.
The inlet of the cooling zone 102 of the primary zeolite wheel is connected to the exhaust gas feed line 7 by a line. The cooling areas 102 of the plurality of zeolite runners 1 are connected in sequence through pipelines, and simultaneously, except for the first-stage zeolite runner, the inlets of the cooling areas 102 of the rest zeolite runners 1 are connected with the outlet of the adsorption area 101 of the previous-stage zeolite runner through pipelines. The outlet of the cooling area 102 of the multistage zeolite rotating wheel is connected with the inlet of the temperature rising channel of the desorption high-temperature heat exchanger 4 through a pipeline.
The outlet of the temperature rising channel of the desorption high-temperature heat exchanger 4 is connected with the desorption main pipeline 12. The desorption main pipeline 12 is respectively connected with the desorption area 103 of each zeolite runner 1 through a pipeline. The desorption zone 103 of each zeolite wheel 1 is connected with a desorption fan 5 through a pipeline.
The desorption fan 5 is connected with an air inlet pipeline of the combustion unit 6. The exhaust line of the combustion unit 6 is connected to the exhaust stack 3. The combustion unit 6 is an RTO or an RCO.
The combustion chamber of the combustion unit 6 is connected with the inlet of the cooling channel of the desorption high-temperature heat exchanger 4 through a pipeline, and the outlet of the cooling channel of the desorption high-temperature heat exchanger 4 is connected with the exhaust funnel 3 through a pipeline.
Under the action of the zeolite rotating wheel fan 2, the waste gas passes through the adsorption zones 101 of the zeolite rotating wheels 1 in sequence, and is discharged after adsorption and purification. Under the action of the desorption fan 5, the cooling zones 102 of the plurality of zeolite runners 1 take gas from the gas inlet pipeline of the adsorption zone 101 of the zeolite runner 1 of the current stage to cool and discharge the gas together. The gas after cooling the zeolite runners 1 is heated by the high-temperature gas of the combustion unit 6 in the desorption high-temperature heat exchanger 4, and then enters the desorption area 103 of each zeolite runner 1 to be desorbed.
Wherein, the desorption main pipeline 12 is connected with the outlet of the cooling area 102 of the multistage zeolite runner through a pipeline. That is, the desorbed gas can be directly taken from the gas after cooling the zeolite wheel 1, in addition to the gas heated by the desorption high-temperature heat exchanger 4, thereby realizing the temperature adjustment of the desorbed gas.
Besides the primary zeolite wheel, the waste gas input pipeline 7 is also connected with the inlet of the adsorption zone 101 of the rest zeolite wheel 1 through a pipeline. That is, the waste gas input pipeline 7 can be directly connected with a certain stage zeolite runner, and the opening and closing of the pipeline are controlled by a valve, so that the previous zeolite runner 1 can be temporarily adsorbed, and the high-temperature activation and regeneration can be carried out.
The waste gas input pipeline 7 is provided with a pretreatment filter 8 and a pressure stabilizing box 9, and the pressure stabilizing box 9 is positioned on the front side of the pretreatment filter 8.
A flame arrester 10 is arranged on the pipeline at the front side of the desorption fan 5. A fresh air pipeline 11 which can be filled with fresh air is also connected to the pipeline between the desorption fan 5 and the flame arrester 10.
In this embodiment, the number of the zeolite runners is two, that is, the first-stage zeolite runner 1A and the second-stage zeolite runner 1B are arranged in sequence according to the flowing direction of the exhaust gas.
The working process of the system is as follows: waste gas is filtered and pretreated by the pretreatment filter 8 under the action of the power of the zeolite rotating wheel fan 2, and then is adsorbed in series by the adsorption area 101 of the two-stage zeolite rotating wheel, and the waste gas after adsorption treatment is discharged by the exhaust funnel 3.
Under the action of the power of the desorption fan 5, a small amount of waste gas is taken from the waste gas input pipeline 7 after the filtration pretreatment and enters a cooling area 102 of the zeolite runner 1, the cooling area 102 is a desorption area 103 of the previous rotation period, and the cooling area 102 is cooled and then enters an adsorption area 101. The waste gas without the particulate matters enters a desorption high-temperature heat exchanger 4 after passing through a cooling zone 102 for heat exchange and temperature rise to 180-220 ℃, then enters a desorption zone 103 of the zeolite rotating wheel 1, desorbs VOCs adsorbed by the zeolite rotating wheel 1, enters a three-chamber RTO/RCO for pyrolysis after passing through a flame arrester 10, and is mixed with the adsorbed tail gas to enter an exhaust funnel 3 for discharge.
The heat source of the desorption high-temperature heat exchanger 4 is taken from high-temperature tail gas of an RTO/RCO hearth, and the high-temperature tail gas enters the exhaust funnel 3 to be discharged after preheating desorption air intake (also cooling exhaust). And a fresh air pipeline 11 with a fresh air valve is arranged between the desorption fan 5 and the flame arrester 10 and is used for adjusting the temperature of the RTO/RCO hearth.
The RTO combustor can heat the exhaust gases above 760 ℃ to completely oxidize the VOCs to water and carbon dioxide. The heat of the oxidized high-temperature gas is stored by the ceramic heat accumulator for preheating the newly-entered waste gas, thereby saving the fuel and reducing the use cost. The specific process is as follows: desorption high-concentration waste gas enters a heat storage chamber A, heat released by a hot heat storage body (heat accumulated in a high-temperature state in the last cycle) at the lower part of the heat storage chamber A preheats the waste gas and is cooled, the waste gas is heated to more than 600 ℃ and enters a combustion chamber, the waste gas is discharged through a heat storage chamber B after the temperature of a hearth is further raised to more than 760 ℃, the heat absorbed by a cold heat storage body (blown clean after the last cycle is cooled by inlet gas) at the lower part of the heat storage chamber B is heated, and the tail gas is cooled to about 100 ℃ and enters an exhaust funnel 3 to be discharged. The regenerator C replaces the residual waste gas in the regenerator space to the combustion chamber for combustion under the action of the cleaning blower, so that the purification efficiency is ensured. The cycle is that the regenerator A enters waste gas, the regenerator B exhausts gas and the regenerator C is swept, the next cycle is that the regenerator B enters waste gas, the regenerator C exhausts gas and the regenerator A is swept, the next cycle is that the regenerator C enters waste gas, the regenerator A exhausts gas and the regenerator B is swept, the lower part of the cycle is changed into that the regenerator A enters waste gas, the regenerator B exhausts gas and the regenerator C is swept, and the cycle is carried out in an alternating reciprocating cycle. The working principle of the three-chamber RCO is the same, the difference is that a catalyst is additionally arranged above a heat accumulator, and the temperature of a combustion chamber is reduced from not less than 760 ℃ to not less than 350 ℃.
In one embodiment, 35000Nm is provided for a business 3 The exhaust gas with the wind quantity per hour is taken as an example, and the intake concentration is designed to be 300mg/m 3 The pollutants are mainly acetone, ethyl acetate, isopropanol and toluene, and the comprehensive purification efficiency requirement reaches 95%. The treatment process is designed as two-stage zeolite rotary wheel adsorption + RTO.
Waste gas is uniformly mixed in a pressure stabilizing box 9 and is subjected to filtering pretreatment by a pretreatment filter 8, and then is adsorbed in series through an adsorption area 101 of a two-stage zeolite rotating wheel, the waste gas after adsorption treatment is discharged from an exhaust funnel 3, wherein the grade of the pretreatment filter 8 is G4+ F5+ F7+ F9. The concentration multiple of the first-stage zeolite wheel 1A is 10 times, and the corresponding cooling and desorption air quantity is 3500Nm 3 The designed adsorption efficiency of the primary zeolite rotating wheel 1A is 92 percent. The concentration multiple of the second-stage zeolite rotating wheel 1B is 20 times, and the corresponding cooling and desorption air quantity is 1750Nm 3 The designed adsorption efficiency is 75 percent. The comprehensive adsorption efficiency of the two-stage zeolite rotating wheel is 98 percent. Wherein, the pressure difference monitoring (PDT 101A-PDT 104A) is arranged before and after each stage of filter material of the pretreatment filter 8. The zeolite wheel 1 of each stage is provided with a field pressure display (PG 101, PG 102) at the front and the back. Temperature monitoring (T9, T7 and T8) is arranged after the pressure stabilizing box 9 and each stage of zeolite rotating wheel 1 are adsorbed, and an alarm is given at high temperature. The zeolite rotating wheel fan 2 is interlocked with a micro-pressure meter (PIC 101) arranged in a pressure stabilizing box 9 in a frequency conversion way, so that the pressure at the front end of the processing system is controlled to be constant, and the stable and continuous production is ensured.
The desorption fan 5 is started, and the total desorption air quantity is controlled to be 5250Nm 3 The cooling air quantity is controlled to be 1750Nm by a cooling regulating valve arranged at the front end of the secondary rotating wheel 3 The cooling air quantity of the first-grade zeolite rotating wheel 1A is 3750Nm 3 H is the ratio of the total weight of the catalyst to the total weight of the catalyst. Cooling gas enters the desorption high-temperature heat exchanger 4 through a cooling pipeline, the temperature is raised to 180-220 ℃, the cooling gas enters the desorption area 103 of the zeolite rotating wheel 1 through a desorption pipeline to desorb the zeolite rotating wheel 1, and desorbed high-concentration waste gas enters RTO after passing through the flame arrester 10. Wherein the cooling pipeline in front of the high-temperature heat exchanger is provided with a cooling bypass valve F2 which is communicated with the desorption pipeline at the outlet of the desorption high-temperature heat exchanger 4, and when the desorption gas in the desorption pipeline is over-temperature, the cooling bypass valve F2 is opened to keep the proper desorption temperature. The desorption gas inlet of the first-stage zeolite rotating wheel 1A is provided with a desorption regulating valve, and the desorption air quantity of the first-stage zeolite rotating wheel 1A is controlled to be 3500Nm 3 The desorption air volume of the second-stage rotating wheel is 1750Nm 3 H is used as the reference value. The desorption air volume can be changed through the desorption adjusting valve according to the operation condition, and the concentration ratio is further changed. VOCs adsorbed by the desorption area 103 of the zeolite rotating wheel 1 are desorbed by hot air, enter the three-chamber RTO for pyrolysis through the flame arrester 10, are mixed with adsorbed tail gas, enter the exhaust funnel 3 and are discharged. Wherein, each grade of zeolite runner 1 cooling outlet (T3, T4), zeolite runner 1 desorption gas gathering inlet (T5), runner desorption outlet (T6, T7) are all provided with temperature monitoring, alarm when in high temperature. A pneumatic analog valve (F1) arranged at a high-temperature gas inlet of the desorption high-temperature heat exchanger 4 is linked with the collective inlet temperature (T5) of the desorption gas of the rotating wheel, the opening degree of the F1 is adjusted to be small when the temperature is over-high, the opening degree of a bypass valve (F2) of a cooling outlet is adjusted to be large, and the temperature of the desorption gas is reduced. The opening degree of the cooling regulating valve (F4) at the front end of the second-stage rotating wheel and the opening degree of the desorption regulating valve (F5) of the first-stage rotating wheel are adjustable, and the cooling and desorption air volume of each-stage rotating wheel is controlled. The desorption fan 5 is interlocked with a micro-pressure meter (PIC 201) arranged on the desorption bypass pipeline to control the pressure of the desorption system to be constant.
The RTO is a three-chamber RTO, each combustion chamber is provided with an air inlet switching valve, an air outlet switching valve and a purge valve, and only one valve is opened in each operation period. Wherein A1, B1 and C1 are air inlet switching valves, A2, B2 and C2 are air outlet switching valves, and A3, B3 and C3 are purge valves. The common operating cycle is: a enters B and goes out C to purge, B enters C and goes out A to purge, C enters A and goes out B to purge, and the circulation is alternated. Wherein the bottom and the upper part of the heat accumulator are respectively provided with temperature monitors TA1, TB1, TC1 and TA2, TB2, TC2, wherein any one of TA1, TB1, TC1 exceeds 130 ℃ (can be set), and the valve is forcibly switched to ensure that the exhaust temperature does not exceed the limit. Two temperature monitors (T1 and T2) are arranged above the RTO combustion chamber, the start and stop of the burner are controlled in a linkage mode according to the average value of the two temperatures, for example, the burner is started when the temperature is lower than 750 ℃, and the burner is closed when the temperature is higher than 800 ℃. The front end of the desorption pipeline flame arrester 10 is provided with LEL concentration monitoring, when the concentration exceeds the lower explosion limit by 25%, the interlocking valve acts, all air inlet switching valves of the RTO are closed, and the desorption bypass valve is opened. Be provided with fresh air control valve (F3) in the middle of spark arrester 10 and desorption fan 5, when the RTO combustion chamber overtemperature, open the fresh air valve cooling.
The intake air concentration is 300mg/m 3 The first-level zeolite runner 1A is concentrated by 10 times, the adsorption efficiency is 92 percent, and the first-level zeolite runner1A outlet concentration of 24mg/m 3 . The concentration of the second-stage zeolite rotating wheel 1B is 20 times, the adsorption efficiency is 75 percent, and the outlet concentration of the second-stage zeolite rotating wheel 1B is 6mg/m 3 . 3500Nm of first-stage zeolite rotary wheel 1A desorption air volume 3 H, desorption concentration 2760mg/m 3 . Secondary zeolite rotary wheel 1B desorption air quantity 1750Nm 3 H, desorption concentration 384mg/m 3 . RTO Total air volume 5250Nm 3 H, average inlet gas concentration 1968mg/m 3 . The purification efficiency of RTO is 98 percent, and the average emission concentration of RTO is 39.36mg/m 3 . The exhaust pipe 3 has the exhaust concentration of 10.35mg/m 3 And the comprehensive purification efficiency of the two-stage rotating wheel and the RTO is 96.5 percent.
35000Nm 3 The comprehensive purification efficiency of the two-stage zeolite rotating wheel adsorption + RTO of the/h can reach 96.5 percent, which is obviously higher than 90 percent of the 1A adsorption + RTO of the one-stage zeolite rotating wheel. Compared with RTO, the floor area and the weight of the system are saved by 25%, the one-time investment is saved by 15%, and the operating cost is saved by 60%.
Claims (8)
1. The utility model provides a VOCs purifies and adsorbs concentrated combustion system with multistage runner which characterized in that:
the device comprises a plurality of zeolite rotating wheels, a zeolite rotating wheel fan, an exhaust funnel, a desorption high-temperature heat exchanger, a desorption fan and a combustion unit;
the zeolite rotating wheel is divided into an adsorption area, a desorption area and a cooling area, the position of each area is fixed, and the zeolite rotating wheel rotates according to the sequence of the adsorption area, the desorption area and the cooling area and is sequentially alternated;
the zeolite rotating wheels are sequentially from a first-stage zeolite rotating wheel to a multi-stage zeolite rotating wheel;
the waste gas input pipeline is connected with an inlet of an adsorption area of the primary zeolite rotating wheel; adsorption zones of the zeolite rotating wheels are sequentially connected in series through pipelines; the outlet of the adsorption zone of the multistage zeolite rotating wheel, a zeolite rotating wheel fan and an exhaust funnel are sequentially connected through a pipeline;
the inlet of the cooling area of the primary zeolite rotating wheel is connected with a waste gas input pipeline through a pipeline; the cooling zones of the zeolite rotating wheels are sequentially connected through a pipeline, and meanwhile, except for the first-stage zeolite rotating wheel, the inlets of the cooling zones of the rest zeolite rotating wheels are connected with the outlet of the adsorption zone of the previous-stage zeolite rotating wheel through a pipeline; the outlet of the cooling area of the multistage zeolite runner is connected with the inlet of the heating channel of the desorption high-temperature heat exchanger through a pipeline;
an outlet of a temperature rise channel of the desorption high-temperature heat exchanger is connected with a desorption main pipeline; the desorption main pipeline is respectively connected with the desorption area of each zeolite rotating wheel through a pipeline; the desorption area of each zeolite rotating wheel is connected with a desorption fan through a pipeline;
the desorption fan is connected with an air inlet pipeline of the combustion unit; an exhaust pipeline of the combustion unit is connected with an exhaust funnel;
the combustion chamber of the combustion unit is connected with the inlet of the cooling channel of the desorption high-temperature heat exchanger through a pipeline, and the outlet of the cooling channel of the desorption high-temperature heat exchanger is connected with the exhaust funnel through a pipeline.
2. The system of claim 1, wherein the combustion system comprises:
wherein, the desorption main pipeline is connected with an outlet of a cooling area of the multistage zeolite runner through a pipeline.
3. The system of claim 1, wherein the combustion system comprises:
besides the primary zeolite rotating wheel, the waste gas input pipeline is also connected with the inlets of the adsorption zones of the rest zeolite rotating wheels through pipelines.
4. The system of claim 1, wherein the combustion system comprises:
wherein, be equipped with the preliminary treatment filter on the waste gas input pipeline.
5. The system of claim 4, wherein the combustion system comprises:
wherein, still be equipped with the surge tank on the waste gas input pipeline, be located the front side of preliminary treatment filter.
6. The system of claim 1, wherein the combustion system comprises:
and a flame arrester is arranged on the pipeline on the front side of the desorption fan.
7. The system of claim 6, wherein the combustion system comprises:
wherein, the pipeline between desorption fan and spark arrester still is connected with the fresh air pipeline that can let in the new trend.
8. The system of claim 1, wherein the combustion system comprises:
wherein the combustion unit is an RTO or an RCO.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117298801A (en) * | 2023-11-28 | 2023-12-29 | 上海常逸环保科技有限公司 | Waste gas treatment equipment based on zeolite runner and RTO |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117298801A (en) * | 2023-11-28 | 2023-12-29 | 上海常逸环保科技有限公司 | Waste gas treatment equipment based on zeolite runner and RTO |
| CN117298801B (en) * | 2023-11-28 | 2024-03-12 | 上海常逸环保科技有限公司 | Waste gas treatment equipment based on zeolite runner and RTO |
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