Novel energy-saving and safe pre-spraying dust remover control system

Abstract

The utility model relates to the technical field of environment-friendly equipment, in particular to a novel energy-saving and safe pre-spraying dust remover control system. Comprising a filter bag dust collector used for adsorbing oil dirt in waste gas through a filter bag; the dry powder bin is used for storing dry powder materials and is connected with the filter bag dust collector through a material conveying pipeline; the feeding fan is used for switching and controlling the airflow direction through a valve and driving the dry powder to be circularly conveyed between the filter bag dust collector and the dry powder bin; and the ash return pipeline is communicated with the bottom of the filter bag dust collector and the dry powder bin and is used for recovering the dry powder material which is not coated to the filter bag. By additionally arranging the ash return pipeline and the valve linkage design, unadsorbed dry powder can be recycled to the dry powder bin for repeated use, the consumption of the dry powder is reduced by about 20%, and the raw material cost is greatly reduced; the dry powder circulation process avoids the problem that bottom ash is discharged as hazardous waste in a traditional system, the hazardous waste output and the follow-up treatment cost are remarkably reduced, and the method conforms to the concepts of circular economy and resource conservation.

Description

TECHNICAL FIELD

[0001] The utility model relates to environmental protection equipment technical field, concretely relates to a novel energy -conserving, safe pre -spraying powder dust remover control system. BACKGROUND

[0002] In the volatile organic compounds (VOCs) waste gas treatment field, the application of molecular sieve runner technology often needs to use pre-spraying powder dust remover to adsorb and intercept oil stains in waste gas, so as to protect the subsequent processing unit. The traditional pre-spraying powder dust remover system usually transports the material in the dry powder bin to the filter bag dust remover by the feeding fan, and the dry powder is coated on the surface of the filter bag by using the air volume of the main fan. However, the prior art has the following defects: first, the coating efficiency is insufficient, about 20% of the dry powder cannot be effectively adsorbed on the filter bag, and finally deposited at the bottom of the dust remover as waste, causing raw material waste and increasing the burden of hazardous waste treatment; second, the dry powder at the bottom of the dust remover is easy to be lifted by the airflow during operation, forming a persistent high-concentration dust environment, which has the safety risk of dust explosion.

[0003] In the prior art, the means to solve the above problems is limited to periodically cleaning and discharging the bottom waste or improving the coating process, but neither of them touches the root cause: high material consumption and hazardous waste increase caused by material recycling, and safety risk caused by difficult elimination of dust environment. Therefore, there is an urgent need for a pre-spraying powder dust remover control system that can realize efficient recycling of dry powder, reduce the amount of hazardous waste, and avoid dust accumulation and improve safety from the structural design. In this background, the utility model optimizes the system structure and operation process, and proposes an innovative solution that combines energy saving, safety and environmental benefits. CONTENT OF THE UTILITY MODEL

[0004] The utility model provides a novel energy -conserving, safe pre -spraying powder dust remover control system, and its purpose is to solve the problem that the dry powder consumption of the existing pre -spraying powder dust remover system is large, and the safety is low, and there is the risk of dust explosion.

[0005] To achieve the above purpose, the technical scheme of the utility model is as follows:

[0006] A novel energy -conserving, safe pre -spraying powder dust remover control system, comprising:

[0007] Filter bag dust remover, for adsorbing oil stains in waste gas by filter bag;

[0008] Dry powder bin, store dry powder material, and connect with the filter bag dust remover through the material conveying pipeline;

[0009] Feeding fan, the air flow direction is controlled by valve switching, and the dry powder is circulated and conveyed between the filter bag dust remover and the dry powder bin;

[0010] A back ash pipeline is connected between the bottom of the filter bag dust collector and the dry powder bin, and is used for recycling dry powder material that is not coated to the filter bag;

[0011] The filter bag dust collector is provided with a waste gas inlet valve and a waste gas outlet valve;

[0012] A dust collector rotary valve is arranged between the filter bag dust collector and the back ash pipeline;

[0013] The back ash pipeline is connected to the feeding fan through a back ash valve;

[0014] A bin rotary valve is arranged between the conveying pipeline and the dry powder bin;

[0015] A dry powder valve is arranged between the conveying pipeline and the filter bag dust collector;

[0016] The conveying pipeline is connected to the feeding fan through a spray ash valve.

[0017] Further, a material level meter is arranged in the filter bag dust collector and the dry powder bin respectively, and is used for monitoring the material accumulation state in the filter bag dust collector and the dry powder bin.

[0018] Further, an oil content detection device is arranged in the dry powder bin, and is used for measuring the oil content of the dry powder to determine the material replacement period.

[0019] Further, a discharging screw mechanism is arranged between the conveying pipeline and the bin rotary valve.

[0020] Further, a Venturi is arranged at the lower part of the bin rotary valve.

[0021] Further, a dust collector pulse valve is arranged at the upper part of the filter bag dust collector.

[0022] Further, a dust collector spray valve and a dust collector vibration valve are arranged at the lower part of the filter bag dust collector.

[0023] The beneficial effects achieved by the utility model are as follows:

[0024] A novel energy-saving and safe pre-spray powder dust collector control system, by additionally arranging a back ash pipeline and a valve linkage design, the un-adsorbed dry powder can be recycled to the dry powder bin for repeated use, reducing the dry powder consumption by about 20%, greatly reducing the raw material cost; the dry powder circulation process avoids the problem of bottom ash as hazardous waste in the traditional system, significantly reducing the amount of hazardous waste and subsequent treatment cost, and is consistent with the concept of circular economy and resource conservation.

[0025] A new energy-saving and safe pre-powder spraying dust collector control system, through linkage control of the dust collector rotary valve and the silo rotary valve, combined with real-time monitoring of the material level meter, ensures that there is no dry powder accumulation at the bottom of the filter bag dust collector. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings described below are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from the structures shown in the drawings without creative labor.

[0027] Figure 1 It is a schematic diagram of a new energy-saving and safe pre-powder spraying dust collector control system.

[0028] Figure 2 It is a schematic diagram of an existing pre-powder spraying dust collector system.

[0029] In the figure, 1, dry powder valve; 2, waste gas inlet valve; 3, dust collector blowing valve; 4, dust collector excitation valve; 5, dust collector pulse valve; 6, waste gas outlet valve; 7, filter bag dust collector; 8, dust collector material level switch; 9, dust collector rotary valve; 10, high material level switch of silo; 11, silo blowing valve; 12, low material level switch of silo; 13, unloading screw; 14, silo rotary valve; 15, Venturi; 16, dry powder silo; 17, silo excitation; 18, waste material trolley; 19, ash spraying valve; 20, ash return valve; 21, feeding fan; 22, ash return pipeline; 23, material conveying pipeline.

[0030] The realization, functional characteristics and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0032] It should be noted that if the embodiments of the utility model have the directionality indication (such as up, down, left, right, front, back, etc.), the directionality indication is only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), if the specific posture changes, the directionality indication also changes accordingly.

[0033] In addition, if the embodiments of the utility model have the description of "first", "second" and the like, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one feature. In addition, the meaning of "and / or" appearing in the whole text is that it includes three parallel schemes, taking "A and / or B" as an example, including A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary technical personnel in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor is it within the protection scope required by the utility model.

[0034] As shown in Figure 1 A new energy-saving and safe pre-powder dust collector control system, comprising: a filter bag dust collector 7 for adsorbing oil stains in waste gas by filter bag; a dry powder bin 16 for storing dry powder material and being connected with the filter bag dust collector 7 through a conveying pipeline 23; a feeding fan 21 for driving dry powder to be circulated and conveyed between the filter bag dust collector 7 and the dry powder bin 16 by switching the air flow direction through a valve; a back ash pipeline 22 for recycling dry powder material not coated to the filter bag, which is communicated between the bottom of the filter bag dust collector 7 and the dry powder bin 16; the filter bag dust collector 7 is provided with a waste gas inlet valve 2 and a waste gas outlet valve 6; a dust collector rotary valve 9 is arranged between the filter bag dust collector 7 and the back ash pipeline 22; the back ash pipeline 22 is connected to the feeding fan 21 through a back ash valve 20; a discharging screw 13 mechanism, a bin rotary valve 14 and a Venturi 15 are arranged between the conveying pipeline and the dry powder bin 16; a dry powder valve 1 is arranged between the conveying pipeline and the filter bag dust collector 7; the conveying pipeline is connected to the feeding fan 21 through a dust injection valve 19.

[0035] Further comprising a material level meter arranged in the filter bag dust collector 7 and the dry powder bin 16 respectively, for monitoring the material accumulation state in the filter bag dust collector 7 and the dry powder bin 16. The material level meter comprises a dust collector material level switch 8 in the filter bag dust collector 7, a bin high material level switch 10 and a bin low material level switch 12 in the dry powder bin 16

[0036] Further comprising an oil content detection device arranged in the dry powder bin 16, for measuring the oil content of the dry powder to determine the material replacement period.

[0037] The upper part of the filter bag dust collector 7 is provided with a dust collector pulse valve 5. The lower part of the filter bag dust collector 7 is provided with a dust collector blowing valve 3 and a dust collector vibration valve 4. The pulse valve and the vibration valve are used to shake off the dry powder on the filter bag during the cleaning operation.

[0038] As shown in the figure, the new pre-spraying dust collector system includes a filter bag dust collector 7, a dry powder bin 16, a feeding fan 21, a material falling rotary valve, and a matching valve instrument. Figure 1

[0039] The new pre-spraying dust collector system can be divided into four stages of operation, cleaning, dusting, and returning dust according to the system state.

[0040] In the dust collector operation stage, the dust collector adsorbs oil stains in the exhaust gas through the filter bag coated with dry powder inside. At this time, the exhaust gas inlet valve 2 and the exhaust gas outlet valve 6 are in the open state, and other devices are in the closed state. At the same time, the system records the cumulative time of the dust collector operation. When the cumulative time is greater than the dusting period, the dust collector enters the cleaning stage.

[0041] In the dust collector cleaning stage, first, the exhaust gas inlet valve 2 and the exhaust gas outlet valve 6 are closed. After the valve is closed, the dust collector pulse valve 5 is opened to shake off the dry powder on the filter bag. At the same time, the feeding fan 21, the dust return valve 20, the dust collector blowing valve 3, the dust collector vibration valve 4, and the dust collector rotary valve 9 are opened to transport the material at the bottom of the dust collector back to the dry powder bin 16. When the dust collector is cleaned, all devices are closed and enter the dusting stage.

[0042] In the dust collector dusting stage, first, the exhaust gas inlet valve 2, the exhaust gas outlet valve 6, the dry powder valve 1, and the dusting valve 19 are opened. After the valve is opened, the feeding fan 21, the bin blowing valve 11, the unloading screw 13, the bin rotary valve 14, and the bin vibration 17 are opened. The dry powder in the bin is sprayed onto the filter bag in the dust collector. When the dust collector is dusted, all devices are closed and enter the dust return stage.

[0043] In the dust collector dust return stage, the feeding fan 21, the dust return valve 20, the dust collector blowing valve 3, the dust collector vibration valve 4, and the dust collector rotary valve 9 are opened to transport the material at the bottom of the dust collector back to the dry powder bin 16. When the dust collector is dusted, all devices are closed and enter the operation stage. The operation is sequentially cycled.

[0044] After multiple cycles, the material in the dry powder bin 16 needs to be replaced. The material in the bin is unloaded into the waste trolley 18 by reversing the bin rotary valve 14, and is treated as hazardous waste. At the same time, new dry powder material is added to the bin for subsequent device operation.

[0045] Figure 2 ​The shown is a conventional pre-injection powder dust collector system, and the dust collector is connected with the dust collector return pipe through a valve. Figure 1 Compared with the prior art, the pre-injection powder dust collector system of the present application realizes material recycling, no waste in the dust collector, and the purpose of eliminating the hidden danger of dust explosion.

[0046] The above is only optional embodiments of the present application, and does not limit the patent range of the present application, and any equivalent structural transformation made by using the content of the present application specification and drawings, or directly / indirectly applied in other related technical fields is included in the patent protection range of the present application.

Claims

1. A new energy-saving, safe pre-dusting deduster control system, characterized in that, The application relates to a filter bag dust collector (7) for adsorbing oil stains in waste gas through filter bags; a dry powder bin (16) for storing dry powder materials and being connected with the filter bag dust collector (7) through a conveying pipeline (23); a feeding fan (21) for driving dry powder to be circulated and conveyed between the filter bag dust collector (7) and the dry powder bin (16) through valve switching control of air flow direction; a back ash pipeline (22) for connecting the bottom of the filter bag dust collector (7) with the dry powder bin (16) and recycling dry powder materials which are not coated on the filter bags; the filter bag dust collector (7) is provided with a waste gas inlet valve (2) and a waste gas outlet valve (6); a dust collector rotary valve (9) is arranged between the filter bag dust collector (7) and the back ash pipeline (22); the back ash pipeline (22) is connected with the feeding fan (21) through a back ash valve (20); a bin rotary valve (14) is arranged between the conveying pipeline and the dry powder bin (16); a dry powder valve (1) is arranged between the conveying pipeline and the filter bag dust collector (7); and the conveying pipeline is connected with the feeding fan (21) through a dust injection valve (19). The application further comprises a material level meter arranged in the filter bag dust collector (7) and the dry powder bin (16) respectively, which is used for monitoring the material accumulation state in the filter bag dust collector (7) and the dry powder bin (16). The application further comprises an oil content detection device arranged in the dry powder bin (16), which is used for measuring the oil content of dry powder to determine the material replacement period. A discharging screw (13) mechanism is arranged between the conveying pipeline and the bin rotary valve (14). A venturi (15) is further arranged at the lower part of the bin rotary valve (14). A dust collector pulse valve (5) is arranged at the upper part of the filter bag dust collector (7). A dust collector injection valve (3) and a dust collector excitation valve (4) are arranged at the lower part of the filter bag dust collector (7). ​ ​ ​ ​ 2. A novel energy efficient, safe pre-dusting deduster control system as claimed in claim 1, wherein: ​ 3. A novel energy efficient, safe pre-dusting deduster control system as claimed in claim 1, wherein: ​ 4. A novel energy efficient, safe pre-dusting deduster control system as claimed in claim 1, wherein: ​ 5. A novel energy efficient, safe pre-dusting deduster control system as claimed in claim 4, wherein: ​ 6. A novel energy efficient, safe pre-dusting deduster control system as claimed in claim 1, wherein: ​ 7. A novel energy efficient, safe pre-dusting deduster control system as claimed in claim 1, wherein: ​

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