CN105642064A - Fiber drying exhaust treatment device - Google Patents
Fiber drying exhaust treatment device Download PDFInfo
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- CN105642064A CN105642064A CN201610164620.8A CN201610164620A CN105642064A CN 105642064 A CN105642064 A CN 105642064A CN 201610164620 A CN201610164620 A CN 201610164620A CN 105642064 A CN105642064 A CN 105642064A
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- separating machine
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/20—Combinations of devices covered by groups B01D45/00 and B01D46/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
- B01D53/265—Drying gases or vapours by refrigeration (condensation)
Abstract
The invention provides a fiber drying exhaust treatment device, comprising at least a primary drying cyclone separator, a gas-to-gas heat exchanger, a low pressure gas-water rainfall room, a chimney and a wood chip processing mechanism, wherein the primary drying cyclone separator is connected to the gas-to-gas heat exchanger, the gas-to-gas heat exchanger is internally provided with at least a gas-to-gas heat exchange pipeline, an outlet of each gas-to-gas heat exchange pipeline is connected to a gas use point, an inlet of each gas-to-gas heat exchange pipeline is connected to the chimney, the low pressure gas-water rainfall room and a gas inlet point, the low pressure gas-water rainfall room is internally provided with a cyclone gas-water separator, or the bottom of the low pressure gas-water rainfall room is provided with the cyclone gas-water separator connected to the gas-gas heat exchanger, the wood chip processing mechanism is connected with the gas-gas heat exchanger, the cyclone gas-water separator, and the low pressure gas-water rainfall room, so that exhaust can be recycled, and the cost is lowered.
Description
Technical field
The present invention relates to a kind of fiber and dry exhaust gas processing device.
Background technology
Fiberboard industry is comprehensive utilization of resources industry, is again resource dependent form industry, or the industry that energy consumption is relatively high. Medium density fibre board (MDF) density is 650-800 kilogram/cubic metre, high-density plate density >=880 kilogram/cubic metre, low density fiberboard density is 450-650 kilogram/cubic metre, and it is mainly used in building interior finishing, floor base material, Furniture manufacture, car and boat finishing, Household electric appliance casing manufacture and carves various technique reliefs etc.
Fiberboard is taking artificial fast-growing small dimension wood, brush wood, logging residue and industrial wood waste as main raw material, adopting the sheet material that dry method or wet process technique are produced, this production technique comprises following workshop section: workshop section prepared by wood chip, workshop section prepared by fiber, matforming and hot pressing section and finished product processing workshop section; Wherein, wood chip is prepared workshop section and is comprised the operation compositions such as raw material is stored up, chips, screened, Chip treatment; Fiber is prepared workshop section and is comprised the operations such as defibrator process, impregnation, applying glue, drying.
The fiber of fibreboard production line is prepared the dry of workshop section and is usually adopted one-level or two grades of anxious formula drying machines of sudden strain of a muscle, comprises drying air fan, dry pipeline, expansion joint, safety anti-explosive dish, discharging turning valve, 1-2 dry cyclone separator means. To dodge the anxious main function of formula drying machine be exactly (with firebrand matter waste material boiler high-temperature flue gas) the dry fiber of wet xylon (85%-90% water ratio) flash baking executing upper glue to water ratio only 8&-15%, is beneficial to follow-up matforming and hot pressing section use of mating formation; Wherein dry cyclonic separator offgas outlet temperature is 50 DEG C 75 DEG C, exhaust particulate thing emission concentration 50mg 175mg/m3, formaldehyde emissions concentration 5mg 15mg/m3, blackness of exhaustion 1, water ratio 0.1kg/m3, and air quantity is relatively big, reaches 100,000-70 ten thousand Nm3/ h, pressure is about 3500-5000Pa, and wind speed is at 8 meters/second 25 meters/second; And the tail gas that present stage produces at the dry cyclonic separator of fiberboard industry is all directly to emitting in the air, thus the air in environment is polluted.And the artificial board product line of fiberboard type is a production line needing heating, summer, room temperature can reach more than 30 DEG C, winter, room temperature can be low to negative less than 10 DEG C, the production tool of product is had a certain impact by envrionment temperature, be usually expressed as output height in summer, winter output low, winter more needs more heat energy, major cause be winter lower temperature make the fibre mat being exposed to room air be cooled to lower room temperature, cause the time lengthening of fibre mat heating and pressurizing.
The existing history for many years of the research of air dehydration machine, if publication number is the practical novel of CN202778224U, its name is called: air dehydration machine just discloses a kind of water extracter utilizing double-layer active carbon to dewater, such as application number: 201320024129.7, name is called: cyclone type warm air total heat recovery dedusting dehumidifying carbonated drink separating machine, foregoing invention mainly adopts siccative or lyophilization to carry out dry air medium, in order to keep the temperature of air dielectric, usually to the air dielectric heating of outlet, heat energy is consumed so again; Owing to dry cyclonic separator offgas outlet temperature reaches 50 DEG C 75 DEG C, air water ratio is also up to 0.1kg/m3, reach capacity water ratio, and air quantity is relatively big, reaches 100,000-70 ten thousand Nm3/ h, wind speed is higher, wind speed up to 8 meters/second 25 meter/second, so so far without suitable waste heat, water and dry fiber recovery and dehumidifying special device.
Summary of the invention
The technical problem to be solved in the present invention, it is to provide a kind of fiber to dry exhaust gas processing device, the particulate matter in dry cyclonic separator emission and formaldehyde can not only be processed, and realize being dried by fiber using waste heat from tail gas and steam water, the recycling of fiber simultaneously and dry tail gas dehumidifying and recycle, thus avoid the waste of water, heat, fiber, formaldehyde resource.
The present invention is achieved in that a kind of fiber dries exhaust gas processing device, comprise the dry cyclonic separator of at least one one-level, gas-gas heat exchanger, one low pressure vapor rainfall room, one chimney and a Chip treatment mechanism, the dry cyclonic separator of described one-level is connected to described gas-gas heat exchanger, at least one road gas-gas heat exchange pipeline it is provided with in described gas-gas heat exchanger, the outlet of every road gas-gas heat exchange pipeline is connected to one and uses gas point, the entrance of every road gas-gas heat exchange pipeline is connected to chimney respectively, low pressure vapor rainfall room and admission, described low pressure vapor rainfall indoor are provided with a cyclone steam separating machine, or it is provided with a cyclone steam separating machine bottom described low pressure vapor rainfall room, described cyclone steam separating machine is connected to described gas-gas heat exchanger, described Chip treatment mechanism connects described gas-gas heat exchanger respectively, cyclone steam separating machine and low pressure vapor rainfall room.
Further, also comprising a filter screen type conveyor room, the dry cyclonic separator of described one-level is connected to described filter screen type conveyor room, is provided with exhaust outlet bottom described filter screen type conveyor room, and described exhaust outlet is connected to described gas-gas heat exchanger.
Further, the dry cyclonic separator top of described one-level is provided with offgas outlet, and described offgas outlet is connected to described filter screen type conveyor room.
Further, described filter screen type conveyor indoor are provided with the first baffle plate and second baffle, it is provided with a filter screen type conveyor in the middle part of described filter screen type conveyor room, it is provided with the first perforate in the middle part of described first baffle plate, the 2nd perforate it is provided with in the middle part of described second baffle, described filter screen type conveyor is through described first perforate and the 2nd perforate, and the left and right sides, described filter screen type conveyor room is respectively equipped with the first observation door and the 2nd observation door, and described second baffle bottom right side is provided with one the 2nd gas lock.
Further, also comprise the first induced draft fan and the first air door, one first water discharging valve it is provided with bottom described gas-gas heat exchanger, described first water discharging valve is connected to described Chip treatment mechanism, the bottom of described gas-gas heat exchanger is provided with at least one exhaust bend pipe, described first induced draft fan connects each exhaust bend pipe and cyclone steam separating machine respectively, and described first air door connects each exhaust bend pipe and cyclone steam separating machine respectively.
Further, also comprise the 2nd induced draft fan, 2nd air door, 3rd air door, 4th air door, tendencies door and the 6th air door, described 2nd induced draft fan connects the outlet of each gas-gas heat exchange pipeline respectively and uses gas point, described 2nd air door connects the outlet of each gas-gas heat exchange pipeline respectively and uses gas point, the entrance of gas-gas heat exchange pipeline described in each is connected to admission by the 3rd air door, the entrance of gas-gas heat exchange pipeline described in each is connected to the one end of described 4th air door, the other end of described 4th air door is connected to described tendencies door one end and the 6th air door one end respectively, the other end of described tendencies door is connected to described low pressure vapor rainfall room, the other end of described 6th air door is connected to described chimney.
Further, described low pressure vapor rainfall indoor are provided with an intermediate chamber and mistress, described intermediate chamber communicates with bottom described mistress, described cyclone steam separating machine is located in described intermediate chamber, described cyclone steam separating machine is provided with a cavity, described cavity is connected to air, described cyclone steam separating machine top is provided with an opening, it is provided with second row penstock bottom described cyclone steam separating machine, described second row penstock is connected to described Chip treatment mechanism, described mistress top is provided with at least one production well, described production well is connected to described chimney and the entrance of every road gas-gas heat exchange pipeline respectively, one the 3rd water discharging valve it is provided with bottom described low pressure vapor rainfall room, described 3rd water discharging valve is connected to described Chip treatment mechanism.
Further, described low pressure vapor rainfall indoor are provided with an intermediate chamber and mistress, described intermediate chamber communicates with bottom described mistress, described intermediate chamber bottom portion is located at by described cyclone steam separating machine, described cyclone steam separating machine top is provided with an opening, described opening is connected to described intermediate chamber, it is provided with second row penstock bottom described cyclone steam separating machine, described second row penstock is connected to described Chip treatment mechanism, described mistress top is provided with at least one production well, described production well is connected to described chimney and the entrance of every road gas-gas heat exchange pipeline respectively, one the 3rd water discharging valve it is provided with bottom described low pressure vapor rainfall room, described 3rd water discharging valve is connected to described Chip treatment mechanism.
Further, top, described interior room is provided with a guiding cap, and described guiding cap is semisphere.
Further, described Chip treatment mechanism is chip washer or fiber preparation section wood chip conveyor.
Tool of the present invention has the following advantages: a kind of fiber of the present invention dries exhaust gas processing device, the structure design of its whole device, can while the tail gas of the dry cyclonic separator generation of process, the tail gas that dry cyclonic separator produces can not only be processed, avoid the exhaust temperature being disposed in air too high, the problem of environmental pollution that the granule contents such as dust are too high and cause, and achieve the moisture content in fiber drying tail gas simultaneously, waste heat, fiber, dust, formaldehyde carries out recycling, thus avoid water, waste heat, fiber, formaldehyde, the waste of dust resource, in addition, this device also has compact construction, take up an area less feature, big air quantity can be realized, the process of high-moisture percentage gas.
Accompanying drawing explanation
The present invention is further illustrated in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is the principle schematic that a kind of fiber of the present invention dries exhaust gas processing device.
Fig. 2 is a kind of concrete connection diagram that a kind of fiber of the present invention dries cyclone steam separating machine and low pressure vapor rainfall room in exhaust gas processing device.
Embodiment
The specific embodiment of the invention is as shown in Figure 1, a kind of fiber of the present invention dries exhaust gas processing device, comprise dry cyclonic separator 1, the filter screen type conveyor room 2 of at least one-level, gas-gas heat exchanger 3, cyclone steam separating machine 4, low pressure vapor rainfall room 5, chimney 7 and a Chip treatment mechanism 6, wherein filter screen type conveyor room 2 is tetragon, low pressure vapor rainfall room 5 is circular, and Chip treatment mechanism 6 is the wood chip conveyor of chip washer or fiber preparation section, wherein chimney 7 is provided with a chimney import 71, and described dry cyclonic separator 1, filter screen type conveyor room 2 and gas-gas heat exchanger 3 outside are surrounded by thermal insulation layer. prevent the cold pouring moisture content of warm air from precipitating out on filter screen type conveyor filtering net, cause water and fiber bonding, filtering net is made to lose filtering function, and outdoor environment freezing air is on the impact of gas-gas heat exchanger 3 warm air, the hot air temperature that heat exchange is gone out is not high, described dry cyclonic separator 1 offgas outlet 13 is connected with the first pipeline 12 with the import of filter screen type conveyor room 2, wherein the first pipeline 12 shell is surrounded by thermal insulation layer, described filter screen type conveyor room 2 exhaust outlet second pipe 27 is connected a gas-gas heat exchanger 3, and in the middle part of tetragon filter screen type conveyor room, arrange a filter screen type conveyor 21, wherein second pipe 27 shell is surrounded by thermal insulation layer, the lower mesh bag of filter screen type conveyor 21 and the middle dozen dirt that is provided with of upper mesh bag roll (not shown) and automatically cleaning compressed air spray head (not shown). first baffle plate 28 makes tetragon filter screen type conveyor room form three rooms with second baffle 29, the middle part that wherein middle part of the first baffle plate 28 is provided with one first perforate (not shown) and second baffle 29 is provided with the 2nd perforate (not shown), room, the left side 23 is for the useless fiber bottom receiving filtration spangle conveyer 21, and is furnished with the first observation door 25, the dry fiber that right-hand chamber 22 filters out for accepting filter screen type conveyor 21, connects the 2nd gas lock 26 bottom right-hand chamber 22, right side is that door 24 is observed in a maintenance. being furnished with 311 sprays above this gas-gas heat exchanger 3 and drench self-cleaning system, lower section is provided with a drip pan and the first water discharging valve 34, is built-in with at least one road gas-gas heat exchange pipeline 31 at gas-gas heat exchanger 3 air chamber, and the entrance of gas-gas heat exchange pipeline 31 is connected with the first pipeline 36, first pipeline 36 connects the 4th air door 38 respectively and the 3rd air door the 37, four air door 38 is connected with exhaust emissions tendencies door 57, exhaust emissions the 6th air door 72 by the 4th pipeline 74. exhaust emissions the 6th air door 72 is connected in the chimney import 71 of chimney 7 by the 5th pipeline 73. outlet connection the 2nd pipeline the 39, two pipeline 39 of gas-gas heat exchange pipeline 31 connects the 2nd induced draft fan 32 and the 2nd air door the 33, three pipeline 300 also connects the 2nd induced draft fan 32 and the 2nd air door 33, and is connected with gas point. in this gas-gas heat exchanger 3, bottom and outside are provided with at least one taper exhaust bend pipe 35, taper exhaust bend pipe 35 connects the first induced draft fan 41 and the first air door 42, first induced draft fan 41 and the first air door 42 to be introduced cyclone steam separating machine 4 in the garden cylindrical chamber become of stainless steel plate in the middle part of low pressure vapor rainfall room 5 by the 3rd pipeline 43 and enters on air port 44.Cyclone steam separating machine 4 top is provided with venting port 45, and bottom is equipped with a drip pan and a water discharge valve 46, and cyclone steam separating machine 4 shell is divided into two layers, cavity 47 between two layers, shell and atmosphere. By one piece of stainless steel plate 56 around the intermediate chamber 51 (cylinder room, garden) become in the middle part of low pressure vapor rainfall room 5, top, intermediate chamber 51 Room is above the center of circle of venting port 45 centered by mid point position, taking this central point to the distance of stainless steel plate 56 as diameter, intermediate chamber top arranges a guiding cap 59, and described guiding cap 59 is semisphere; Intermediate chamber 51 bottom communicates with bottom the mistress 52 of low pressure vapor rainfall room 5, forms an air-flow passage, makes two Room that in low pressure vapor rainfall room 5, the outer chevet of formation and interior chevet communicate. Outer chevet top, low pressure vapor rainfall room 5 is provided with the production well 55 of a plurality of symmetry arrangement, connects by pipeline symmetry and is connected with tendencies door 57. 3rd water discharging valve 58 of the first water discharging valve 34 of gas-gas heat exchanger 3, the second row penstock 46 of cyclone steam separating machine 4, low pressure vapor rainfall room 5 is connected respectively on the 6th pipeline 62, to on Chip treatment mechanism 6 (chip washer or fiber preparation section wood chip conveyor) water-supply pipe, wherein Chip treatment mechanism 6 is provided with a clear water import 66, for its water inlet; Chip treatment mechanism 6 is provided with wood chip import 61, for allowing wood chip enter; Chip treatment mechanism 6 is provided with a chip outlet 65, for taking out wood chip wherein, Chip treatment mechanism 6 is provided with stirring mechanism 63 so that cleaner when cleaning wood chip, one the 4th water discharging valve 64 it is provided with, for discharging the sewage of its inside bottom Chip treatment mechanism 6.
As shown in Figure 1, during operation of the present invention (winter pattern, such as envrionment temperature 10 DEG C time): first maintenance observes that door 24, first observes door 25, the 2nd observation door 53, the 3rd observation door 54 are closed, 2nd induced draft fan 32, first induced draft fan 41 starts, 3rd air door 37 is opened, the cold air inside of admission enters in the gas-gas heat exchange pipeline 31 in gas-gas heat exchanger 3 under the bleeding of the 2nd induced draft fan 32, gas-gas heat exchanger 3 is lowered the temperature, reaches room temperature; With dry cyclonic separator 1 offgas outlet 13 temperature 50 DEG C, air water ratio 0.1kg/m3For example: the hot blast having completed drying fibrous task sprays into the exhaust gas entrance 11 of dry cyclonic separator 1, dry cyclonic separator 1 utilizes the principle of work of whirlwind that the dry fiber of major part is fallen, discharge discharging by the first gas lock 14, enter in production line and use, it is achieved fiber recovery uses. The hot blast completing whirlwind Processing tasks of first discharge sprays from offgas outlet 13, filter screen type conveyor room 2 is entered by the first pipeline 12, filter screen type conveyor top, room 2 and bottom are equipped with air pressure probe, the fibre dust in the hot blast completing whirlwind Processing tasks of first discharge is filtered out by filter screen type conveyor 21, the fibre dust wherein filtered down is discharged by the outlet 22 of filter screen type conveyor 21, it is discharged to device external by the 2nd gas lock 26, also enter in production line and use, it is achieved the recovery of fiber fines uses. Filter screen type conveyor 21 is configured with the self cleaning arrangement playing dirt rod and pressurized air nozzle, work when upper and lower air pressure probe pressure difference reaches certain set(ting)value, play the self-cleaning system work of dirt rod and pressurized air nozzle, automatically carry out the cleaning of the filtering net on filter screen type conveyor 21.
Entering gas-gas heat exchanger 3 by the drying fibrous warm air tail gas of filter screen filtration from the discharge of filter screen type conveyor room 2 exhaust outlet second pipe 27, it is 100g/m that the air water ratio of tail gas is dried on gas-gas heat exchanger 3 top3Reach capacity water ratio, again under the cooling effect of gas-gas heat exchange pipeline 31, when drying fibrous warm air tail gas arrives gas-gas heat exchanger 3 bottom, drying fibrous tail gas temperature has dropped to 25 DEG C and (sets 25 DEG C of gases mainly heating out for later tail gas heat release and can give gas equipment and environment provides the gas of a comparatively high temps, reduce heat energy loss), temperature herein is made to have dropped to the water ratio that reaches capacity of 25 DEG C of drying fibrous tail gas, and air water ratio is 24g/m3, make drying fibrous tail gas discharge 76g/m3Water;Owing to formaldehyde is soluble in water, the water of condensation in dried fibres tail gas absorbs the formaldehyde in gas simultaneously, reduces the emission concentration of formaldehyde. Low pressure vapor rainfall room 5 is placed in production line indoor, owing to drying fibrous tail gas is by, after gas-gas heat exchanger 3, some water exists in gas with the form of the globule, also has little time sedimentation, is blown in cyclone steam separating machine 4 by the first induced draft fan 41. Due to the cavity 47 between two layers, cyclone steam separating machine 4 shell and atmosphere, the drying fibrous tail gas of cyclone steam separating machine 4 inside is cooled further, globule weight and the weight of dust and globule mixture in drying fibrous tail gas are greater than air weight, in cyclopneumatic separator under the separation of whirlwind, it is separated, eliminates the dust in gas and moisture content and formaldehyde; Water of condensation is discharged by valve 46 with the form of water. The drying fibrous tail gas (two road vent gas treatment) dewatered through cyclone steam separating machine 4 is discharged from venting port 45. Owing to dewatered drying exhaust gas flow (two road vent gas treatment) is along the guiding of semisphere guiding cap 59, can freely discharge from 330 degree of angle scopes, and turn and run downwards. Owing to low pressure vapor rainfall room 5 gaseous tension is less than the air pressure of venting port 45, again owing to cyclone steam separating machine 4 is in the Working environment of low pressure vapor rainfall room 5, and housing environment temperature only 10 DEG C, one be low pressure vapor rainfall room 5 to surrounding environment release of heat, to production line heating indoor; The freezing air that two is indoor cools to dewatered drying exhaust gas flow in low pressure vapor rainfall room 5, makes dewatered drying exhaust gas flow carry out cooling and causes 15 DEG C. Three is owing to when dewatered drying exhaust gas flow arrives low pressure vapor rainfall room 5 intermediate chamber 51, flow section becomes suddenly big several times, reduce the flow velocity of dewatered drying exhaust gas flow, gravity direction is consistent with flow direction simultaneously again, moisture content in dewatered drying exhaust gas flow precipitates out further again, falls bottom low pressure vapor rainfall room 5 intermediate chamber 51. Four is cool further at the air-flow of the mistress 52 of low pressure vapor rainfall room 5 upwards to run, adverse current natural subsidence again. Due to the control of tendencies door 57, making the tail gas of dewatered drying in low pressure vapor rainfall room 5 keep malleation, such as: during air pressure 0.2Mpa, the air water ratio making the drying fibrous tail gas of the water ratio that reaches capacity now herein is 3.6g/m3, continue to make drying fibrous tail gas discharge 20.4g/m3Water. 4th air door 38 is opened, when having realized the drying fibrous tail gas discharge air door 57 of dehydration 96.4%, 6th air door 72 is closed, 3rd air door 37 closes, the drying fibrous tail gas having realized dehydration 96.4% enters the entrance of gas-gas heat exchange pipeline 31, heat energy in the drying fibrous tail gas that absorption has been filtered in gas-gas heat exchange pipeline 31 heats up, as being warmed up to 40 DEG C, the oven dry tail gas meeting the requirements of process heating up by the 2nd induced draft fan 32 delivers to the occasion needing work (such as boiler forced draft blower entrance, need improve envrionment temperature spreading machine around with fibre mat conveyor around etc.). the water of condensation collected from the 3rd water discharging valve 58 of the second row penstock 46 of the first water discharging valve 34 of gas-gas heat exchanger 3, cyclone steam separating machine 4, low pressure vapor rainfall room 5 is transported to the auxiliary water-supply pipe of Chip treatment mechanism 6 (chip washer or fiber preparation section wood chip conveyor) by the 6th pipeline 62, realize the reuse again of water of condensation, dust, formaldehyde, reduce consumption and the atmospheric pollution of water resources. being equipped with water of condensation tank level control system in gas-gas heat exchanger 3, cyclone steam separating machine 4, low pressure vapor rainfall room 5, the first water discharging valve 34 of control gas-gas heat exchanger 3, the second row penstock 46 of cyclone steam separating machine 4, the 3rd water discharging valve 58 of low pressure vapor rainfall room 5 work.
As shown in Figure 2, during operation of the present invention (summer pattern, envrionment temperature 30 DEG C): the heat energy that production environment needs is less, first maintenance observation door 24, first observation door 25, the 2nd observation door 53, the 3rd observation door 54 are closed, 2nd induced draft fan 32 starts, 3rd air door 37 is opened, and the 4th air door 38 closes, with dry cyclonic separator 1 offgas outlet 13 temperature 50 DEG C, air water ratio, 100g/m3For example: the hot blast having completed drying fibrous task sprays into the exhaust gas entrance 11 of dry cyclonic separator 1, and dry cyclonic separator 1 utilizes the principle of work of whirlwind to make dry fiber fall, and discharges discharging by the first gas lock 14, enter in production line and use, it is achieved fiber recovery uses. The drying fibrous tail gas having completed drying fibrous task sprays from offgas outlet 13, filter screen type conveyor room 2 is entered by the first pipeline 12, filter screen type conveyor top, room 2 and bottom are equipped with air pressure probe, fibre dust is filtered out by filter screen type conveyor 21, the fibre dust filtered down is discharged by the outlet 22 of filter screen type conveyor 21, is discharged to outside for production line by the 2nd gas lock 26. Filter screen type conveyor 21 is configured with the self cleaning arrangement playing dirt rod and pressurized air nozzle, start working when upper and lower air pressure probe pressure difference reaches certain set(ting)value, play the self-cleaning system work of dirt rod and pressurized air nozzle, automatically the cleaning of the filtering net on filter screen type conveyor 21 is carried out, entering gas-gas heat exchanger 3 by the drying fibrous tail gas of filter screen filtration from the discharge of filter screen type conveyor room 2 exhaust outlet second pipe 27, it is 100g/m that the air water ratio of tail gas is dried on gas-gas heat exchanger 3 top3, reach capacity water ratio, and gas-gas heat exchanger 3 bottom is dried tail gas temperature and dropped to 35 DEG C, and the air water ratio making the oven dry tail gas of the water ratio that reaches capacity herein is 40g/m3, make drying fibrous tail gas discharge 60g/m3Water; Owing to formaldehyde is soluble in water, the water of condensation in dried fibres tail gas absorbs the formaldehyde in gas simultaneously, reduces the emission concentration of formaldehyde. Low pressure vapor rainfall room 5 is placed in production line indoor, first air door 42 is opened, first induced draft fan 41 is shut down, owing to the cooling of drying fibrous tail gas is less, only 15 DEG C, drying fibrous tail gas is bigger by wind speed after gas-gas heat exchanger 3, some water is blown in cyclone steam separating machine 4 with the form of the globule by the first air door 42, the weight of globule weight and globule mixture is greater than air weight, in cyclopneumatic separator under the separation of whirlwind, it is separated, eliminates the dust in gas and moisture content and formaldehyde; Water of condensation is discharged by valve 46 with the form of water. Discharged from venting port 45 by cyclone steam separating machine 4 dewatered drying fiber tail gas (two road vent gas treatment). Owing to the fiber exhaust gas flow of dewatered drying (two road vent gas treatment) now is along the guiding of semisphere guiding cap 59, can freely discharge within the scope of 360 degree of angles, turn and run downwards. Owing to low pressure vapor rainfall room 5 gaseous tension is less than the air pressure of venting port 45, again owing to cyclone steam separating machine 4 is in the Working environment of low pressure vapor rainfall room 5, one is that envrionment temperature has 30 DEG C, it is not necessary to heated by environment; Two is that the air of indoor 30 DEG C cools to dewatered drying exhaust gas flow in low pressure vapor rainfall room 5, and dewatered drying fiber exhaust gas flow can only be cooled to 30 DEG C. Three is owing to when dewatered drying fiber exhaust gas flow arrives low pressure vapor rainfall room 5 intermediate chamber 51, flow section becomes suddenly big several times, reduce the flow velocity of dewatered drying exhaust gas flow, gravity direction is consistent with flow direction simultaneously, moisture content in dewatered drying exhaust gas flow precipitates out further again, falls bottom.Four is cool further at the air-flow of the mistress 52 of low pressure vapor rainfall room 5 upwards to run, natural subsidence again. Owing to tendencies door 57 opens wide, making the dewatered drying tail gas in low pressure vapor rainfall room 5 keep normal pressure, the air water ratio making the fiber tail gas of dewatered drying of the water ratio that reaches capacity now herein is 30g/m3, continue to make drying fibrous tail gas discharge 10g/m3Water. 4th air door 38 continues closed, and the 6th air door 72 continues to open, and the drying fibrous tail gas having realized dehydration 70% is drained in chimney 7, by the outer row of chimney 7. Indoor air enters the entrance of gas-gas heat exchange pipeline 31 by the 3rd air door 37, in gas-gas heat exchange pipeline 31, the heat energy in the drying fibrous tail gas of absorbing and filtering heats up, as being warmed up to 45 DEG C, by the 2nd induced draft fan 32 meet the requirements of heating up warm air deliver to need work occasion (as boiler forced draft blower entrance, need to improve around the spreading machine of envrionment temperature with fibre mat conveyor around etc.), simultaneously as suction cleaner, old air on production line is taken away, is replaced as outdoor fresh air. The water of condensation collected from the 3rd water discharging valve 58 of the second row penstock 46 of the first water discharging valve 34 of gas-gas heat exchanger 3, cyclone steam separating machine 4, low pressure vapor rainfall room 5 is transported to the auxiliary water-supply pipe of Chip treatment mechanism 6 (chip washer or fiber preparation section wood chip conveyor) by the 6th pipeline 62, realize the reuse again of water of condensation, reduce the consumption of water resources. Being equipped with water of condensation tank level control system in gas-gas heat exchanger 3, cyclone steam separating machine 4, low pressure vapor rainfall room 5, the first water discharging valve 34 of control gas-gas heat exchanger 3, the second row penstock 46 of cyclone steam separating machine 4, the 3rd water discharging valve 58 of low pressure vapor rainfall room 5 work.
Although the foregoing describing the specific embodiment of the present invention; but it is familiar with those skilled in the art to be to be understood that; specific embodiment described by us just explanation property; instead of the restriction for the scope to the present invention; those of ordinary skill in the art in the modification of the equivalence done according to the spirit of the present invention and change, in the scope that the claim that all should be encompassed in the present invention is protected.
Claims (10)
1. a fiber dries exhaust gas processing device, it is characterized in that: comprise the dry cyclonic separator of at least one one-level, gas-gas heat exchanger, one low pressure vapor rainfall room, one chimney and a Chip treatment mechanism, the dry cyclonic separator of described one-level is connected to described gas-gas heat exchanger, at least one road gas-gas heat exchange pipeline it is provided with in described gas-gas heat exchanger, the outlet of every road gas-gas heat exchange pipeline is connected to one and uses gas point, the entrance of every road gas-gas heat exchange pipeline is connected to chimney respectively, low pressure vapor rainfall room and admission, described low pressure vapor rainfall indoor are provided with a cyclone steam separating machine, or it is provided with a cyclone steam separating machine bottom described low pressure vapor rainfall room, described cyclone steam separating machine is connected to described gas-gas heat exchanger, described Chip treatment mechanism connects described gas-gas heat exchanger respectively, cyclone steam separating machine and low pressure vapor rainfall room.
2. a kind of fiber according to claim 1 dries exhaust gas processing device, it is characterized in that: also comprise a filter screen type conveyor room, the dry cyclonic separator of described one-level is connected to described filter screen type conveyor room, being provided with exhaust outlet bottom described filter screen type conveyor room, described exhaust outlet is connected to described gas-gas heat exchanger.
3. a kind of fiber according to claim 2 dries exhaust gas processing device, it is characterised in that: the dry cyclonic separator top of described one-level is provided with offgas outlet, and described offgas outlet is connected to described filter screen type conveyor room.
4. a kind of fiber according to claim 1 dries exhaust gas processing device, it is characterized in that: described filter screen type conveyor indoor are provided with the first baffle plate and second baffle, it is provided with a filter screen type conveyor in the middle part of described filter screen type conveyor room, it is provided with the first perforate in the middle part of described first baffle plate, the 2nd perforate it is provided with in the middle part of described second baffle, described filter screen type conveyor is through described first perforate and the 2nd perforate, the left and right sides, described filter screen type conveyor room is respectively equipped with the first observation door and the 2nd observation door, described second baffle bottom right side is provided with one the 2nd gas lock.
5. a kind of fiber according to claim 1 dries exhaust gas processing device, it is characterized in that: also comprise the first induced draft fan and the first air door, one first water discharging valve it is provided with bottom described gas-gas heat exchanger, described first water discharging valve is connected to described Chip treatment mechanism, the bottom of described gas-gas heat exchanger is provided with at least one exhaust bend pipe, described first induced draft fan connects each exhaust bend pipe and cyclone steam separating machine respectively, and described first air door connects each exhaust bend pipe and cyclone steam separating machine respectively.
6. a kind of fiber according to claim 1 dries exhaust gas processing device, it is characterized in that: also comprise the 2nd induced draft fan, 2nd air door, 3rd air door, 4th air door, tendencies door and the 6th air door, described 2nd induced draft fan connects the outlet of each gas-gas heat exchange pipeline respectively and uses gas point, described 2nd air door connects the outlet of each gas-gas heat exchange pipeline respectively and uses gas point, the entrance of gas-gas heat exchange pipeline described in each is connected to admission by the 3rd air door, the entrance of gas-gas heat exchange pipeline described in each is connected to the one end of described 4th air door, the other end of described 4th air door is connected to described tendencies door one end and the 6th air door one end respectively, the other end of described tendencies door is connected to described low pressure vapor rainfall room, the other end of described 6th air door is connected to described chimney.
7. a kind of fiber according to claim 1 dries exhaust gas processing device, it is characterized in that: described low pressure vapor rainfall indoor are provided with an intermediate chamber and mistress, described intermediate chamber communicates with bottom described mistress, described cyclone steam separating machine is located in described intermediate chamber, described cyclone steam separating machine is provided with a cavity, described cavity is connected to air, described cyclone steam separating machine top is provided with an opening, it is provided with second row penstock bottom described cyclone steam separating machine, described second row penstock is connected to described Chip treatment mechanism, described mistress top is provided with at least one production well, described production well is connected to described chimney and the entrance of every road gas-gas heat exchange pipeline respectively, one the 3rd water discharging valve it is provided with bottom described low pressure vapor rainfall room, described 3rd water discharging valve is connected to described Chip treatment mechanism.
8. a kind of fiber according to claim 1 dries exhaust gas processing device, it is characterized in that: described low pressure vapor rainfall indoor are provided with an intermediate chamber and mistress, described intermediate chamber communicates with bottom described mistress, described intermediate chamber bottom portion is located at by described cyclone steam separating machine, described cyclone steam separating machine top is provided with an opening, described opening is connected to described intermediate chamber, it is provided with second row penstock bottom described cyclone steam separating machine, described second row penstock is connected to described Chip treatment mechanism, described mistress top is provided with at least one production well, described production well is connected to described chimney and the entrance of every road gas-gas heat exchange pipeline respectively, one the 3rd water discharging valve it is provided with bottom described low pressure vapor rainfall room, described 3rd water discharging valve is connected to described Chip treatment mechanism.
9. a kind of fiber according to claim 7 or 8 dries exhaust gas processing device, it is characterised in that: top, described interior room is provided with a guiding cap, and described guiding cap is semisphere.
10. a kind of fiber according to claim 1 dries exhaust gas processing device, it is characterised in that: described Chip treatment mechanism is chip washer or fiber preparation section wood chip conveyor.
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| CN201610164620.8A CN105642064B (en) | 2016-03-22 | 2016-03-22 | A kind of fiber dries exhaust gas processing device |
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| CN201610164620.8A CN105642064B (en) | 2016-03-22 | 2016-03-22 | A kind of fiber dries exhaust gas processing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202869197U (en) * | 2012-11-09 | 2013-04-10 | 中国神华能源股份有限公司 | Tail gas treatment device used for brown coal drying system and brown coal drying system |
| JP2013078742A (en) * | 2011-10-05 | 2013-05-02 | Babcock Hitachi Kk | Exhaust gas treatment apparatus and exhaust gas treatment method |
| CN203971666U (en) * | 2014-07-10 | 2014-12-03 | 山东方明药业集团股份有限公司 | A kind of salinomycin dry waste gas treating apparatus |
| CN205699942U (en) * | 2016-03-22 | 2016-11-23 | 福建永林家居有限公司 | A kind of fiber dries exhaust gas processing device |
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2016
- 2016-03-22 CN CN201610164620.8A patent/CN105642064B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013078742A (en) * | 2011-10-05 | 2013-05-02 | Babcock Hitachi Kk | Exhaust gas treatment apparatus and exhaust gas treatment method |
| CN202869197U (en) * | 2012-11-09 | 2013-04-10 | 中国神华能源股份有限公司 | Tail gas treatment device used for brown coal drying system and brown coal drying system |
| CN203971666U (en) * | 2014-07-10 | 2014-12-03 | 山东方明药业集团股份有限公司 | A kind of salinomycin dry waste gas treating apparatus |
| CN205699942U (en) * | 2016-03-22 | 2016-11-23 | 福建永林家居有限公司 | A kind of fiber dries exhaust gas processing device |
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Address after: 366099 No. 568, North District, nege Industrial Park, Yong'an City, Sanming City, Fujian Province Patentee after: Fujian Yonglin HOME Furnishings Co.,Ltd. Address before: 366099 No. 568, North District, nege Industrial Park, Yong'an City, Sanming City, Fujian Province Patentee before: FUJIAN YONGLIN HOUSEHOLD Co.,Ltd. |
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