CN208406602U - A kind of desulfurizer of charcoal ink factory's flue gas - Google Patents

A kind of desulfurizer of charcoal ink factory's flue gas Download PDF

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Publication number
CN208406602U
CN208406602U CN201820466397.7U CN201820466397U CN208406602U CN 208406602 U CN208406602 U CN 208406602U CN 201820466397 U CN201820466397 U CN 201820466397U CN 208406602 U CN208406602 U CN 208406602U
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CN
China
Prior art keywords
flue gas
tar
desulfurizer
spray
cylinder
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Expired - Fee Related
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CN201820466397.7U
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Chinese (zh)
Inventor
牛留霞
程国际
陈�光
刘志勇
尹道三
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Is Environmental Technology Co Ltd
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Is Environmental Technology Co Ltd
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Abstract

The utility model discloses a kind of desulfurizers of charcoal ink factory's flue gas, it mainly include tar-removing device, absorption plant and circulating pump, the inlet of absorption plant is arranged in the tar-removing device, mist eliminating zone, uptake zone, zoneofoxidation are successively arranged inside the absorption plant from top to bottom, demister is equipped in the mist eliminating zone, the uptake zone is spray-absorption layer, the input duct of the circulating pump is linked into zoneofoxidation, the liquid outlet pipe of the circulating pump is linked into uptake zone to connect with spray-absorption layer, and the absorption plant top is equipped with smoke outlet.The utility model is suitable for the oil removing of the high flue gas of tar content, and tar content can drop to 10mg/Nm3Hereinafter, its centrifugal force differential separation tar and gas for being differently formed using density, efficiency reaches 97.5%, and not extra consumption energy consumption, does not expend power, and operating cost is low, especially effective for the flue gas of high tar content.

Description

A kind of desulfurizer of charcoal ink factory's flue gas
Technical field
The utility model belongs to flue gas desulfurization technique field, and in particular to a kind of desulfurizer of charcoal ink factory's flue gas.
Background technique
With the development of environmental protection industry (epi), the raising of environmental requirement, after power industry and industrial self-owned power plant boiler desulfurization, Other industrial waste gases require purification, and with the raising of current atmospheric emission standard, the proposition of near-zero release, the improvement of atmosphere It is required that higher and higher, at present to the cooking fume containing coal tar of charcoal ink factory, because tar content is high, conventional desulfurization is not reached requirement yet. Direct desulfurization often blocks the spray head of absorption plant, and desulfurizer is caused to be not normally functioning, and seriously affects desulfuration efficiency, Cause discharge not up to standard.And a large amount of tar enter desulfurization absorption plant, and then enter desulfurized gypsum, and desulfurized gypsum is caused to contain coke Oil, gypsum purity is low, is unable to resource utilization, there is secondary pollution generation.
The flue gas desulfurization technique conventional method come out from charcoal ink factory's roaster: cleaning dust is usually first passed through, then A part of tar is removed with electric tar again, finally enters desulfurization absorption plant, but often because of the viscosity of tar in actual motion Greatly, tar can be attached on the electrode tube of electric tar, it is difficult to rinse, operation a period of time resistance increases, the effect of electric tar by To limitation, tar removing efficiency decline, detergent power is reduced, and can be adhered to the wall and pipeline of back segment equipment, on spray head, Severe blockage Equipment, so coal tar must be removed before entering flue gas absorbing device.The investment of electric tar is big, operation, maintenance cost It is high.
Utility model content
The purpose of this utility model is precisely in order to solve the above problems, and propose a kind of desulfurization dress of charcoal ink factory's flue gas It sets, which is suitable for the oil removing of the high flue gas of tar content, can remove in flue gas 97.5% tar, tar content energy energy Drop to 10mg/Nm3Hereinafter, its centrifugal force differential separation tar and gas (tar: 1200kg/m for being differently formed using density3, Gas: 1.3kg/m3), efficiency reaches 97.5%, and not extra consumption energy consumption, does not expend power, and operating cost is low, for high burnt The flue gas of oil content is especially effective.
The utility model provides a kind of desulfurizer of charcoal ink factory's flue gas, mainly includes tar-removing device, absorption plant And circulating pump, the tar-removing device are arranged in the inlet of absorption plant, successively set from top to bottom inside the absorption plant There are mist eliminating zone, uptake zone, zoneofoxidation, demister is equipped in the mist eliminating zone, the uptake zone is spray-absorption layer, the circulation The input duct of pump is linked into zoneofoxidation, and the liquid outlet pipe of the circulating pump is linked into uptake zone and spray-absorption layer phase It connects, the absorption plant top is equipped with smoke outlet.
As preferred means, the tar-removing device includes air inlet pipe, cylinder, oil interceptor and escape pipe, the cylinder Including outer cylinder and inner cylinder, the air inlet pipe with outer cylinder is tangent is linked into cylinder, the oil interceptor is detachably arranged in outer cylinder Bottom end, the inner cylinder are arranged in outer cylinder top middle position, the escape pipe bottom end and are switched in inner cylinder.
As further preferred means, the inner cylinder lower half is cone cell.
As further preferred means, an automatic oil discharge valve is set on the oil interceptor.
As further preferred means, the inner diameter of steel flue is the 1/4-1/3 of outer cylinder.
As further preferred means, the spray-absorption layer is equipped with several layers spray tube, and the spray tube is equipped with The spray port sprayed downwards.
As further preferred means, the demister is Flat defroster or ridge type demister.
As further preferred means, the liquid outlet pipe above the circulating pump is equipped with lime stone slurry and mouth is added.
As further preferred means, gas distributing pipeline is equipped in the zoneofoxidation, gas distributing pipeline is equipped with cloth gas nozzle.
A kind of sulfur method of charcoal ink factory's flue gas, steps are as follows for specific method:
1) flue gas oil removing: charcoal ink factory's original flue gas passes through tar-removing device oil removing, and former flue gas is along outer cylinder barrel tangential direction Into in cylinder, former flue gas declines along the gap spiral between outer cylinder and inner cylinder, falls on inner cylinder bottom end under the flue gas of spiral decline Opening enters in inner cylinder, and flue gas rises in inner cylinder inside spin, rises at the nozzle of escape pipe, is then discharged into through piping Into absorption plant, oil removing is completed;
2) absorption of sulfur dioxide: the flue gas after oil removing enters from the middle and lower part of absorption plant, and flue gas flows upward through Uptake zone, desulfurizing agent are added mouth from the lime stone slurry in liquid outlet pipe and are added, and desulfurizing agent is pumped into spray-absorption by circulating pump Layer, is sprayed downwards, the desulfurizing agent sprayed downwards reacts generation with the smoke contacts of rising by the spray tube in spray-absorption layer The desulfurizing agent of sodium sulfite, sulfur dioxide absorption is flowed into zoneofoxidation, and the flue gas after desulfurization continues to rise in absorption plant It is drained into air after mist eliminating zone demisting by smoke outlet;
3) sodium sulfite Strong oxdiative: being passed through oxidation air into zoneofoxidation, the dioxygen oxidation sodium sulfite in oxidation air Sodium sulphate is generated, absorption plant is discharged when reaching 5-6% in sodium sulfate concentration.
The utility model is the utility model has the advantages that tar-removing device is suitable for removing for the high flue gas of tar content in 1, this desulfurizer Oil, can remove in flue gas 97.5% tar, and tar content can drop to 10mg/Nm3Hereinafter, preventing absorption plant in operation stifled Plug, it is ensured that absorption plant normal operation in sweetening process, while also ensuring that flue gas qualified discharge after absorption plant.
2, collection tar can periodically be discharged by an automatic oil discharge valve being arranged on oil interceptor bottom, and the tar of discharge can be with It is used as a kind of industrial chemicals or energy resourcesization, without secondary pollution.
3, this tar-removing device is static device, the centrifugal force differential separation tar and gas being differently formed using density (tar: 1200kg/m3, gas: 1.30kg/m3), efficiency reaches 97.5%, and not extra consumption energy consumption, does not expend power, transports Row is at low cost, especially effective for the flue gas of high tar content.
4, former flue gas first declines in outer cylinder inside spin in tar-removing device, improves former flue gas and outer tube inner wall and inner cylinder The amount that tar condenses on wall is greatly improved in the time of contact of outer wall, and former flue gas spiral drops to inner cylinder bottom end, then again including Cylinder bottom end rises from inner cylinder inside spin, and the flue gas that inside spin rises is contacted with inner cylinder inner wall so that non-condensing flue gas condenses again On inner wall, reach 97.5% by spiral decline and spiralling flue gas, tar removing efficiency, and oil interceptor and automatic The oil extraction of oil drain valve and emptying effect are good, reduce tar accumulation phenomenon and occur.
Detailed description of the invention
Fig. 1 be the utility model proposes a kind of charcoal ink factory's flue gas desulfurizer.
Fig. 2 is the diagrammatic cross-section of the tar-removing device in Fig. 1.
In figure: 1, tar-removing device;2, oil interceptor;3, automatic oil discharge valve;4, outer cylinder;5, inner cylinder;6, air inlet pipe;7, go out Tracheae;8, absorption plant;9, circulating pump;10, zoneofoxidation;11, uptake zone;12, mist eliminating zone;13, smoke outlet;21, former flue gas; 22, the tar being discharged;23, flue gas after oil removing, 24, oxidation air;25, lime stone slurry;26, flue gas after desulfurization.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing:
As shown in Figs. 1-2, the utility model provides a kind of desulfurizer of charcoal ink factory's flue gas, mainly includes that tar removing fills Set 1, absorption plant 8 and circulating pump 9, the tar-removing device 1 is arranged in the inlet of absorption plant 8, in the absorption plant 8 Portion is successively arranged mist eliminating zone 12, uptake zone 11, zoneofoxidation 10 from top to bottom, is equipped with demister, the suction in the mist eliminating zone 12 Receipts area 11 is spray-absorption floor, and the input duct of the circulating pump 9 is linked into zoneofoxidation 10, the outlet tube of the circulating pump 9 Road is linked into uptake zone 11 to connect with spray-absorption layer, and 8 top of absorption plant is equipped with smoke outlet 13.
The tar-removing device 1 includes air inlet pipe 6, cylinder, oil interceptor 2 and escape pipe 7, and the cylinder includes outer cylinder 4 With inner cylinder 5, the air inlet pipe 6 with outer cylinder 4 is tangent is linked into cylinder, the oil interceptor 2 is detachably arranged in 4 bottom of outer cylinder End, the inner cylinder 5 are arranged in outer cylinder 4 top middle position, 7 bottom end of escape pipe and are switched in inner cylinder 5.The inner cylinder 5 Lower half is cone cell.One automatic oil discharge valve 3 is set on the oil interceptor 2.5 diameter of inner cylinder is 1/4 (root of outer cylinder 4 Change in 1/4-1/3 according to actual conditions range).Oil interceptor 2 can disassemble carry out periodic cleaning from 4 bottom end of outer cylinder, from The regular automatic oil discharge of the dynamic meeting of oil drain valve 3, after oil is unsnatched, automatic oil discharge valve 3 is automatically closed.Oil interceptor 2 is a drum, from Dynamic oil drain valve 3 is an electrically operated valve, and the setting of automatic oil discharge valve 3 opens automatic oil discharge valve in 2 bottom end of oil interceptor, self-timing 3, after unsnatching oil, automatic oil discharge valve 3 on timed-shutoff.
The pipeline and outer cylinder 4 of former flue gas 21 into tar-removing device 1 are tangent, after flue gas enters in outer cylinder 4, due to outer cylinder 4 Have gap between 5 outer wall of inner wall and inner cylinder, flue gas flows in gap, and smoke density be greater than atmospheric density, flue gas can because Self gravity decline, such flue gas enter outer cylinder 4 in after will spiral decline, after flue gas spiral drops to 5 bottom end of inner cylinder, by It is opening in 5 bottom end of inner cylinder, the flue gas of light specific gravity will be from the upward spiral in 5 bottom end of inner cylinder, spiralling flue gas It is raised to exhaust outlet 7, flue gas 23 enters absorption plant 8 after oil removing, then drains into absorption plant 8, in inner cylinder 5 and outer cylinder 4 Tar in spiralling flue gas condenses on wall after contacting respectively with the inner wall of inner cylinder 5 and outer cylinder 4, then as under inner wall Cunning drops into oil interceptor 2.
Two spiral circulation oil removings are formed between inner cylinder 5 and outer cylinder 4, flue gas enters oil removing from air inlet along a tangential direction Space between outer cylinder 4 and the introversion of inner cylinder 5 forms an external spiral along Fig. 1 and shows that the direction of spiral moves, and is downwardly into interior Then the bottom end of cylinder 5 is rebounded from bottom end, then form a minor spiral and run up, until tar removing dress is left in gas outlet Set 1.It is two spirals being connected, one inside spin of an external spiral in the running track of this device interior air-flow.Air-flow exists A kind of centrifugal force is formed during operation, centrifugal force is related with the density of substance, burnt using the difference of gas and fluid density 1000 times of density difference of the order of magnitude (tar: 1200kg/m of the density of oil and the flue gas without tar3, gas: 1.30kg/ m3), the centrifugal force formed in this way using the different density of substance is different, and gas and liquid just separate, and the centrifugal force of tar is big, Tar can be thrown on the inner wall of outer cylinder 4 when external spiral, and tar can be thrown on the inner wall of inner cylinder 5 when inside spin, then edge The inner wall of inner/outer tube flows to oil expeller bottom, and the flue gas 23 without tar then leaves tar-removing device 1 from top, thus two Person separates.
The spray-absorption layer is equipped with 2 layers of spray tube, and the spray tube is equipped with the spray port sprayed downwards.
The demister is Flat defroster (or selection ridge type demister).
Liquid outlet pipe above the circulating pump 9 is equipped with lime stone slurry 25 and mouth is added.Desulfurizing agent is lime stone solution (calcium carbonate content 10%).Gas distributing pipeline is equipped in the zoneofoxidation 10, gas distributing pipeline is equipped with cloth gas nozzle.The gas distribution pipe Road is provided with upwards the cloth gas nozzle of both direction downwards.
Absorption plant 8 is empty tower structure, is divided into three parts from top to bottom: by mist eliminating zone 12, absorbing spraying zone 11, oxidation Area 10 forms, and former flue gas enters after 1 oil removing of tar-removing device from 8 middle and lower part of absorption plant, and flue gas ramps up, by absorbing The layer 2-3 spray tube in area 11, the spray-absorption layer in uptake zone 11 sprays downwards the solution containing desulfurizing agent, desulfurizing agent and flue gas Haptoreaction carries out desulfurization to flue gas, containing the water in desulfurizing agent in the flue gas after desulfurization, forms water mist, the cigarette containing water mist Gas carries out demisting by mist eliminating zone 12, and the flue gas after demisting is discharged by flue gas after desulfurization outlet 13, becomes after removing droplet 26 qualified discharge of flue gas after desulfurization.
Liquid in zoneofoxidation 10 is pumped into uptake zone 11 by circulating pump 9, is sprayed downwards by spray tube, desulfurizing agent exists The lime stone slurry 25 that the liquid outlet pipe of 9 top of circulating pump is equipped with is added mouth and is added.
Air is passed into gas distributing pipeline, is injected in zoneofoxidation by cloth gas nozzle and is aoxidized to solution.
Former oil removal rate of the flue gas through tar-removing device of table 1
Four groups of experimental datas as can be seen from Table 1, oil removal rate reach 96% or more, and average value reaches 97.5%, show this Tar-removing device oil removal efficiency in application is high.
Embodiment
Charcoal ink factory's flue gas (exhaust gas volumn 250000m3/ h, temperature: 150~200 DEG C, dust-laden: 100mg/Nm3, sulfur dioxide 1200mg/Nm3, tar 550mg/Nm3) with this device carrying out desulfurization, desulfurizing agent is lime stone (10%), and high-temperature flue gas 21 is along cutting Line direction enters tar-removing device 1, turnes down to the rebound of 5 lower part of inner cylinder so along the hand of spiral into the space of outer cylinder 4 and inner cylinder 5 After enter back into 5 spiral of inner cylinder to 5 top of inner cylinder, leave tar-removing device 1 from escape pipe 7, tar separates herein with flue gas, Tar comes together in 2 bottom of oil interceptor, periodically by being mounted on 3 discharge system of automatic oil discharge valve of 2 bottom of oil catcher.After oil removing Flue gas enters in the middle part of absorption plant 8, the cyclic absorption of the absorbent containing lime stone slurry is passed through in tower, according to titanium dioxide The concentration of sulphur arranges that 2 layers of spray-absorption layer, flue gas are walked from the bottom up in tower, forms counter current contacting from top to bottom with absorbing liquid, After absorbing sulfur dioxide and the remaining tar of minute quantity, become net cigarette after removing droplet using the demisting layer 12 on tower upper layer Gas is from 13 qualified discharge of absorption plant top smoke outlet;And lime stone slurry is squeezed into from top by circulating pump 9, is inhaled by spraying layer Become calcium sulfite (CaSO after having received sulfur dioxide3), into the zoneofoxidation 10 of tower bottom, it is passed through oxidation air 24 and is forced Deep oxidation becomes calcium sulfate (CaSO after oxidation4·2H20), calcium sulfate (CaSO4·2H20) not soluble in water, concentration control exists 10% discharge system.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting Related claim.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art The other embodiments being understood that.
The utility model is not limited to the above description to embodiment, and those skilled in the art disclose according to the utility model Content, the improvement and modification that need not be carried out by creative work on the basis of the utility model all should be practical new at this Within the protection scope of type.

Claims (9)

1. a kind of desulfurizer of charcoal ink factory's flue gas, it is characterised in that: mainly include tar-removing device (1), absorption plant (8) and Circulating pump (9), in the inlet of absorption plant (8), the absorption plant (8) is internal from upper for tar-removing device (1) setting It is successively arranged mist eliminating zone (12), uptake zone (11), zoneofoxidation (10) under, demister is equipped in the mist eliminating zone (12), it is described Uptake zone (11) is spray-absorption layer, and the input duct of the circulating pump (9) is linked into zoneofoxidation (10), the circulating pump (9) liquid outlet pipe is linked into uptake zone (11) to connect with spray-absorption layer, and absorption plant (8) top is equipped with smoke outlet (13)。
2. a kind of desulfurizer of charcoal ink factory's flue gas according to claim 1, it is characterised in that: the tar-removing device It (1) include air inlet pipe (6), cylinder, oil interceptor (2) and escape pipe (7), the cylinder includes outer cylinder (4) and inner cylinder (5), institute It states air inlet pipe (6) and outer cylinder (4) is tangent is linked into cylinder, the oil interceptor (2) is detachably arranged in outer cylinder (4) bottom end, Top middle position is arranged in outer cylinder in the inner cylinder (5), and escape pipe (7) bottom end is switched in inner cylinder (5).
3. a kind of desulfurizer of charcoal ink factory's flue gas according to claim 2, it is characterised in that: inner cylinder (5) lower half Portion is cone cell.
4. a kind of desulfurizer of charcoal ink factory's flue gas according to claim 2, it is characterised in that: the oil interceptor (2) One automatic oil discharge valve (3) of upper setting.
5. a kind of desulfurizer of charcoal ink factory's flue gas according to claim 2, it is characterised in that: inner cylinder (5) diameter For the 1/4-1/3 of outer cylinder (4).
6. a kind of desulfurizer of charcoal ink factory's flue gas according to claim 1 or 2, it is characterised in that: the spray-absorption Layer is equipped with several layers spray tube, and the spray tube is equipped with the spray port sprayed downwards.
7. a kind of desulfurizer of charcoal ink factory's flue gas according to claim 1, it is characterised in that: the demister is plate Formula demister or ridge type demister.
8. a kind of desulfurizer of charcoal ink factory's flue gas according to claim 1, it is characterised in that: on the circulating pump (9) The liquid outlet pipe in face is equipped with lime stone slurry (25) and mouth is added.
9. a kind of desulfurizer of charcoal ink factory's flue gas according to claim 1, it is characterised in that: in the zoneofoxidation (10) Equipped with gas distributing pipeline, gas distributing pipeline is equipped with cloth gas nozzle.
CN201820466397.7U 2018-04-03 2018-04-03 A kind of desulfurizer of charcoal ink factory's flue gas Expired - Fee Related CN208406602U (en)

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CN201820466397.7U CN208406602U (en) 2018-04-03 2018-04-03 A kind of desulfurizer of charcoal ink factory's flue gas

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Application Number Priority Date Filing Date Title
CN201820466397.7U CN208406602U (en) 2018-04-03 2018-04-03 A kind of desulfurizer of charcoal ink factory's flue gas

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Publication Number Publication Date
CN208406602U true CN208406602U (en) 2019-01-22

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CF01 Termination of patent right due to non-payment of annual fee
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Granted publication date: 20190122

Termination date: 20210403