CN214130322U - System for realizing zero emission of dry waste gas - Google Patents
System for realizing zero emission of dry waste gas Download PDFInfo
- Publication number
- CN214130322U CN214130322U CN202121443975.3U CN202121443975U CN214130322U CN 214130322 U CN214130322 U CN 214130322U CN 202121443975 U CN202121443975 U CN 202121443975U CN 214130322 U CN214130322 U CN 214130322U
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- spray
- tower
- gas
- dehydrator
- drying tower
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- 239000002912 waste gas Substances 0.000 title claims abstract description 29
- 239000007921 spray Substances 0.000 claims abstract description 54
- 239000007789 gas Substances 0.000 claims abstract description 39
- 238000001694 spray drying Methods 0.000 claims abstract description 34
- 239000000463 material Substances 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000005507 spraying Methods 0.000 claims description 13
- 239000003513 alkali Substances 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 8
- 238000001035 drying Methods 0.000 abstract description 13
- 239000000428 dust Substances 0.000 abstract description 7
- 239000002245 particle Substances 0.000 abstract description 7
- 238000006303 photolysis reaction Methods 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 abstract description 3
- 238000005469 granulation Methods 0.000 abstract description 3
- 230000003179 granulation Effects 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 230000003014 reinforcing effect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 14
- 230000008569 process Effects 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000009690 centrifugal atomisation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000015843 photosynthesis, light reaction Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Treating Waste Gases (AREA)
Abstract
The utility model discloses a system for realize dry waste gas zero release, including material processing apparatus and hot air circulating system, wherein hot air circulating system includes spray drying tower, cyclone, spray column and dehydrator, the spray drying tower cyclone the spray column with the dehydrator adopts the gas pipeline to connect gradually according to the gas flow direction and becomes the circulation whole, material processing apparatus passes through the material pipe connection and is in on the spray drying tower. This system cancellation sack removes dust and UV photodissociation, designs novel spray column by oneself, reinforcing dust collection efficiency, increases special air machinery water trap, with the air intake of waste gas air exit with drying equipment directly links to each other, preheats through the return air, advances tower spray granulation, hot-blast particle, cyclone, hot-blast spray cooling, return air heating entering circulation system, accomplishes the waste gas zero release throughout the year, has thoroughly stopped the pollution of dry waste gas to the environment.
Description
Technical Field
The utility model relates to an industrial technology field especially relates to a system for realize dry waste gas zero release.
Background
A spray dryer is a drying process in which a raw material liquid is dispersed into mist droplets by an atomizer, and a powdery product is obtained by directly contacting the mist droplets with hot air (or other gas). The raw material liquid can be a solution, an emulsion or a suspension, and can also be a melt or a paste. The dried product can be made into powder, granule, hollow sphere or granule according to the requirement.
The spray dryer is a hot air circulation, parallel flow or centrifugal atomization dryer. The drying medium air is filtered by the primary and intermediate effect air filters, heated by the heater and then enters the air distributor at the top of the dryer, and the hot air enters the drying chamber spirally and uniformly. The liquid material is conveyed to a high-speed centrifugal atomizer at the top of the tower body through a feed liquid pump, is sprayed into ultrafine fog-like liquid drops under the action of centrifugal force, and is in parallel flow contact with hot air, so that the finished product can be dried in a very short time. The finished product is continuously collected by the bottom of the drying tower and the cyclone separator, and the waste gas is evacuated by the induced draft fan after being dedusted.
The equipment such as spray drying, flash drying and the like is widely applied in industries, such as chemical industry, food industry, medicine industry and the like, and the waste gas is directly discharged into the atmosphere due to the technical defects of the existing waste gas drying treatment process and equipment facilities, and the pollution caused by the waste gas containing a large amount of solid particles and moisture is very common, so that the serious consequences of production limitation, shutdown and production halt can be caused. It is therefore desirable to provide a technique that enables recycling of the dry exhaust gas.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a system for realize dry waste gas zero release to solve the aforementioned problem that exists among the prior art.
In order to realize the purpose, the utility model discloses a technical scheme as follows:
a system for realizing zero emission of dry waste gas comprises a material processing device and a hot air circulating system, wherein the hot air circulating system comprises a spray drying tower, a cyclone separator, a spray tower and a dehydrator, the spray drying tower, the cyclone separator, the spray tower and the dehydrator are sequentially connected into a circulating whole by adopting gas pipelines according to the gas circulation direction, and the material processing device is connected onto the spray drying tower through a material pipeline.
Preferably, the material processing device comprises a material filter and a delivery pump, and the material filter conveys the material to the spray drying tower through the delivery pump.
Preferably, the material processing device further comprises a blending machine, and the blending machine is installed between the delivery pump and the spray drying tower.
Preferably, the hot air circulation system further comprises an air filter, a blower and a heater, and the air filter, the blower and the heater are sequentially connected between the dehydrator and the spray drying tower.
Preferably, the air circulation system further comprises a plurality of temperature and humidity detectors, and the temperature and humidity detectors are respectively installed in front of the heater, between the heater and the spray drying tower and at the air outlet of the spray drying tower.
Preferably, the spray tower comprises an air inlet, a water storage tank, an air outlet, a concentrated alkali tank, a circulating pump and a plurality of layers of spray devices, wherein the air inlet and the air outlet are respectively arranged at the bottom and the top of the spray tower, the air inlet inputs the gas separated from the cyclone separator into the spray tower through a draught fan, and the gas is discharged into the dehydrator from the air outlet after being processed by the plurality of layers of spray devices; the water storage tank is connected with the concentrated alkali tank and is used for providing circulating spraying liquid for the multilayer spraying device through the circulating pump.
Preferably, the multilayer spraying device in the spraying tower is divided into 2-3 layers of spraying devices, the spraying device adopted in each layer is a spiral spray head, and a nozzle, a nozzle aperture and a spray angle of the spiral spray head can be adjusted.
Preferably, the concentrated alkali tank is connected with the dehydrator and is used for further absorbing redundant water vapor generated in the dehydrator.
The utility model has the advantages that:
the utility model provides a system for realize dry waste gas zero release, this system has mainly carried out the innovation to current exhaust-gas treatment technology of equipment such as spray drying and flash drying and equipment facilities, cancel sack dust removal and UV photodissociation, design novel spray column by oneself, the reinforcing dust collection efficiency, increase special air machinery water trap, directly link to each other waste gas air exit and drying equipment's air intake, preheat through the return air, advance tower spraying granulation, the hot-blast particle that weathers, cyclone separation, hot-blast spray cooling, the return air heating gets into the circulation system, possible waste gas zero release throughout the year, thoroughly stopped the pollution of dry waste gas to the environment.
Drawings
FIG. 1 is a flow diagram of a prior art exhaust treatment process;
FIG. 2 is a schematic diagram of the system for realizing zero emission of dry exhaust gas provided in example 1;
fig. 3 is a schematic view of the internal structure of the spray tower provided in example 1;
the device comprises a spray drying tower 1, a cyclone separator 2, a spray tower 3, a circulating water tank 301, a spray layer 302, a rotary spray nozzle 303, a concentrated alkali tank 4, a dehydrator 5, an air filter 6, an air heater 7, a mixer 8, a storage filter 9, a pressure gauge 10, a circulating pump 11, a draught fan 12, a material delivery pump 13 and an air blower 14.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the invention, are given by way of illustration only.
Example 1
The embodiment provides a system for realizing zero emission of dry waste gas, as shown in fig. 2, the system comprises a material processing device and a hot air circulating system, wherein the hot air circulating system comprises a spray drying tower, a cyclone separator, a spray tower and a dehydrator, the spray drying tower, the cyclone separator, the spray tower and the dehydrator are connected into a circulating whole by adopting gas pipelines according to an air flow direction, and the material processing device is connected to the spray drying tower through a material pipeline.
The material processing device in this embodiment includes material filter, blending machine and delivery pump, material filter passes through the delivery pump transmits the material to in the spray drying tower, the blending machine is installed the delivery pump with between the spray drying tower.
In order to detect the humidity change of the exhaust gas in the whole circulation process in real time, the air circulation system in the embodiment further comprises a plurality of temperature and humidity detectors, and the temperature and humidity detectors are respectively installed in front of the heater, between the heater and the spray drying tower and at the air outlet of the spray drying tower.
In order to accelerate the circulation process of air in the hot air circulation system and enable the circulation air treated by the dehydrator to quickly enter the spray drying tower again to participate in the drying process of materials, the hot air circulation system further comprises an air filter, a blower and a heater, wherein the air filter, the blower and the heater are sequentially connected between the dehydrator and the spray drying tower.
In order to remove toxic components and excessive moisture in the exhaust gas, the spray tower system in this embodiment includes an air inlet, a water storage tank, an air outlet, a concentrated alkali tank, a circulation pump, and a multi-layer spray device, where the air inlet and the air outlet are respectively disposed at the bottom and the top of the spray tower, and the air inlet inputs the gas separated from the cyclone separator into the spray tower through an induced draft fan, and the gas is treated by the multi-layer spray device and then discharged from the air outlet into the dehydrator; the water storage tank is connected with the concentrated alkali tank and is used for providing circulating spraying liquid for the multilayer spraying device through the circulating pump.
It should be noted that, in order to improve the contact area and time of waste gas and alkali lye and remove solid particles in the tail gas, the multilayer spraying device in this embodiment adopts 2-3 layers, and each layer all is provided with the spiral nozzle, and the nozzle, the nozzle aperture and the injection angle of each spiral nozzle can be adjusted, can carry out the adjustment of adaptability to the spiral nozzle according to the actual demand. The internal structure of the spray tower after being modified is shown in figure 3.
In actual application, the dehydrator is removed the water in-process for a long time, must store up certain steam, in order to solve this problem, links to each other dehydrator and concentrated alkali groove, in case there is steam in the dehydrator like this, can directly get into the concentrated alkali groove in, guarantees the dewatering effect of dehydrator.
Example 2
The method for treating the waste gas by using the system for realizing zero emission of the dry waste gas provided in the embodiment 1 comprises the following processes:
performing system assembly according to the structure in the embodiment 1, removing an original straight exhaust type chimney, UV photolysis equipment and the like, connecting a tail gas discharge port with an original process air inlet, and using tail gas as process air to form a hot air circulating system; spiral spray heads in the spray tower are improved, the contact area and the contact time of water vapor are increased by the nozzle, the nozzle aperture and the spray angle of each spiral spray head, solid particles in tail gas are removed, and the quality requirement of process air is met;
a baffling dehumidifier, namely the dehydrator in the figure 2 is added behind the spray tower to remove the water in the tail gas in the spray tower so as to meet the process requirements;
in order to reduce the temperature of the gas-washing water of the spray tower, a heat exchanger is added in a circulating water tank, the gas-washing water is recycled to a drying batching system, and gas-washing trapping particles are recovered, so that the product yield is increased;
installing three temperature and humidity detectors, and respectively detecting the humidity of hot air (the temperature is 120-130 ℃ and the humidity is below 25%), air (the temperature is 80-100 ℃ and the humidity is above 70%) and cold air (the temperature is 50-60 ℃ and the humidity is below 40%) links of a hot air circulation system;
adjusting a circulating system according to the humidity change according to the spray drying process requirement to meet the temperature and humidity indexes of hot air entering the tower; the parameters of the spray drying process are adjusted due to different water contents of different production varieties.
And detecting and comparing the obtained spray-dried material, and adjusting parameters of each control point in the circulating system again until qualified products are produced.
When the system in this application carries out exhaust-gas treatment, compare the exhaust-gas treatment device among the prior art, avoided waste gas and dust direct emission under the prerequisite of satisfying the production operation, reduced and eliminated the peculiar smell diffusion even, realized dry tail gas zero release. The oxygen content in the hot air circulating system is reduced, the product is protected from being oxidized, and the content of the product is increased by 0.58%; the washing liquid is recycled, the product yield is improved by 1.26 percent, and the emission of organic substances (VOCs and micro powder) is reduced by 280 tons/year.
Through adopting the utility model discloses an above-mentioned technical scheme has obtained following profitable effect:
the utility model provides a system for realize dry waste gas zero release, this system has mainly carried out the innovation to current exhaust-gas treatment technology of equipment such as spray drying and flash drying and equipment facilities, cancel sack dust removal and UV photodissociation, design novel spray column by oneself, the reinforcing dust collection efficiency, increase special air machinery water trap, directly link to each other waste gas air exit and drying equipment's air intake, preheat through the return air, advance tower spraying granulation, the hot-blast particle that weathers, cyclone separation, hot-blast spray cooling, the return air heating gets into the circulation system, possible waste gas zero release throughout the year, thoroughly stopped the pollution of dry waste gas to the environment.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be viewed as the protection scope of the present invention.
Claims (8)
1. The system for realizing zero emission of the dry waste gas is characterized by comprising a material processing device and a hot air circulating system, wherein the hot air circulating system comprises a spray drying tower, a cyclone separator, a spray tower and a dehydrator, the spray drying tower, the cyclone separator, the spray tower and the dehydrator are sequentially connected into a circulating whole by adopting gas pipelines according to the gas circulation direction, and the material processing device is connected onto the spray drying tower through a material pipeline.
2. The system for achieving zero emission of dry exhaust gas of claim 1, wherein the material processing device comprises a material filter and a delivery pump, and the material filter transfers material into the spray drying tower through the delivery pump.
3. The system for realizing zero emission of dry exhaust gas according to claim 2, wherein the material treatment device further comprises a mixer, and the mixer is installed between the delivery pump and the spray drying tower.
4. The system for realizing zero emission of dry exhaust gas according to claim 1, wherein the hot air circulation system further comprises an air filter, a blower and a heater, and the air filter, the blower and the heater are sequentially connected between the dehydrator and the spray drying tower.
5. The system for realizing zero emission of dry exhaust gas according to claim 4, wherein the air circulation system further comprises a plurality of temperature and humidity detectors, and the temperature and humidity detectors are respectively installed in front of the heater, between the heater and the spray drying tower, and at an air outlet of the spray drying tower.
6. The system for realizing zero emission of dry waste gas according to claim 1, wherein the spray tower comprises a gas inlet, a water storage tank, a gas outlet, a strong alkali tank, a circulating pump and a multi-layer spray device, the gas inlet and the gas outlet are respectively arranged at the bottom and the top of the spray tower, the gas inlet inputs the gas separated from the cyclone separator into the spray tower through a draught fan, and the gas is discharged from the gas outlet into the dehydrator after being processed by the multi-layer spray device; the water storage tank is connected with the concentrated alkali tank and is used for providing circulating spraying liquid for the multilayer spraying device through the circulating pump.
7. The system for realizing zero emission of dry waste gas as claimed in claim 6, wherein the multiple layers of spray devices in the spray tower are divided into 2-3 layers of spray devices, the spray devices adopted in each layer are spiral spray heads, and the nozzles, the nozzle aperture and the spray angle of the spiral spray heads can be adjusted.
8. The system for realizing zero emission of dry exhaust gas according to claim 6, wherein the concentrated alkali tank is connected with the dehydrator and is used for further absorbing the excessive water vapor generated in the dehydrator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121443975.3U CN214130322U (en) | 2021-06-28 | 2021-06-28 | System for realizing zero emission of dry waste gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121443975.3U CN214130322U (en) | 2021-06-28 | 2021-06-28 | System for realizing zero emission of dry waste gas |
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| Publication Number | Publication Date |
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| CN214130322U true CN214130322U (en) | 2021-09-07 |
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| CN202121443975.3U Expired - Fee Related CN214130322U (en) | 2021-06-28 | 2021-06-28 | System for realizing zero emission of dry waste gas |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114136079A (en) * | 2021-12-06 | 2022-03-04 | 伯能技术有限公司 | Drying system and drying method |
| CN114699780A (en) * | 2022-03-22 | 2022-07-05 | 北京金轮坤天特种机械有限公司 | Atomizer and powder preparation facilities of direct preparation of superfine spherical powder that agglomerates |
| CN115253565A (en) * | 2022-06-02 | 2022-11-01 | 天华化工机械及自动化研究设计院有限公司 | System and method for meeting tail gas emission standard of polypropylene particle dryer |
-
2021
- 2021-06-28 CN CN202121443975.3U patent/CN214130322U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114136079A (en) * | 2021-12-06 | 2022-03-04 | 伯能技术有限公司 | Drying system and drying method |
| CN114699780A (en) * | 2022-03-22 | 2022-07-05 | 北京金轮坤天特种机械有限公司 | Atomizer and powder preparation facilities of direct preparation of superfine spherical powder that agglomerates |
| CN115253565A (en) * | 2022-06-02 | 2022-11-01 | 天华化工机械及自动化研究设计院有限公司 | System and method for meeting tail gas emission standard of polypropylene particle dryer |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210907 |