CN206229190U - A kind of process system for being enriched with carbon disulfide and hydrogen sulfide in viscose rayon waste gas - Google Patents
A kind of process system for being enriched with carbon disulfide and hydrogen sulfide in viscose rayon waste gas Download PDFInfo
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- CN206229190U CN206229190U CN201621298661.8U CN201621298661U CN206229190U CN 206229190 U CN206229190 U CN 206229190U CN 201621298661 U CN201621298661 U CN 201621298661U CN 206229190 U CN206229190 U CN 206229190U
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- carbon disulfide
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Abstract
The utility model discloses a kind of process system for being enriched with carbon disulfide and hydrogen sulfide in viscose rayon waste gas, it is characterised in that：Alkali lye spray column, retort and degassing tower including being sequentially connected waste gas header, retort entrance connection alkali lye spray column storage tank and acid waste water storage tank, retort outlet connection degassing tower.The utility model is used cooperatively using acid waste water in alkali lye in alkali lye spray column and retort, the carbon disulfide come in self-adhesive production waste gas and hydrogen sulfide is set to be enriched with, then high concentration carbon disulfide and hydrogen sulfide waste gas are obtained by degassing tower, for in later separation method, the rate of recovery of carbon disulfide can be improved, be conducive to the treatment of viscose rayon waste gas, reduce environmental protection pressure.
Description
Technical field
The utility model is a kind of process system for being enriched with carbon disulfide and hydrogen sulfide in viscose rayon waste gas, and in particular to
To carbon disulfide in waste gas and the enriching apparatus of hydrogen sulfide in production process of viscose fiber, belong to viscose fiber production technology neck
Domain.
Background technology
In production process of viscose fiber, because production process is more, the production cycle is long and from yellow operation to spinning work
The substantial amounts of use industrial chemicals of sequence, therefore, some poisonous and hazardous industrial waste gases are inevitably produced, its main component is
CS from yellow, spinning and acid station2And H2S gases.
At present, the method for the treatment of viscose rayon production waste gas mainly has following three kinds：
One, alkali cleaning spray：Use alkali lye（NaOH）Spray-absorption is carried out to waste gas, Na is generated2S, then film-making export trade, the method
To H2S treatment effects are obvious, but to wherein CS2Treatment effect it is poor；
Two, charcoal absorption：A large amount of tail gas are processed with carbon adsorption technique, CS is reclaimed in desorption2, such as patent document
CN103721524A（A kind of recovery and treatment method in viscose rayon production waste gas, 2014.04.16）Record, by enrichment
Enrichment process carries out absorption trapping in the concentration-retort for be filled with adsorbent to two kinds of gases, and desorption and regeneration process is selected again
With inert gas to CS2And H2S carries out substep desorption, deposits and operates in operation, adjusts more numerous and diverse, and it is small to recycle degree, fortune
The defect such as row expense is high；
Three, condensation：Containing CS2Concentration waste gas higher is through over-heat-exchanger（Condenser）, directly or indirectly will with water at low temperature
EGT is down to CS2Below boiling point, with recovering liquid CS2, such as patent document CN1016599B（Carbon disulphide production process
The method for separating and processing of middle reaction product, 1990.06.13）Record, be 1.5-10 kg/cms and temperature in pressure
Under the conditions of spending for -10-+20 DEG C, carbon disulfide is all liquefied and complete the separation process with hydrogen sulfide.But demonstrate,proved through practice
It is bright, small tolerance, high-temperature, high concentration CS that the method discharges when for the solidification of viscose staple fibre spinning process tow, decomposition2
Recovery when, CS2Efficiency it is the most obvious.
Understood based on above-mentioned situation, the processing method of existing viscose rayon production waste gas also exist treatment effect it is undesirable,
The problems such as production cost is high, particularly condensation reclaim CS2Method in, it is desirable to high concentration CS2Recovery when its efficiency it is the brightest
It is aobvious, based on this, to improve the treatment effeciency of viscose glue industry waste gas, the utility model proposes in one kind enrichment viscose rayon waste gas
The process system of carbon disulfide and hydrogen sulfide.
Utility model content
The purpose of this utility model is to provide a kind of technique for being enriched with carbon disulfide and hydrogen sulfide in viscose rayon waste gas
System, is used cooperatively using acid waste water in alkali lye in alkali lye spray column and retort, makes to come in self-adhesive production waste gas
Carbon disulfide and hydrogen sulfide are enriched with, and then high concentration carbon disulfide and hydrogen sulfide waste gas are obtained by degassing tower, after being used for
In continuous separation method, the rate of recovery of carbon disulfide can be improved, be conducive to the treatment of viscose rayon waste gas, reduce environmental protection pressure.
The utility model is achieved through the following technical solutions：
It is a kind of to be enriched with the process system of carbon disulfide and hydrogen sulfide in viscose rayon waste gas, including it is sequentially connected waste gas header
Alkali lye spray column, retort and degassing tower, retort entrance connection alkali lye spray column storage tank and acid waste water storage tank, retort
Outlet connection degassing tower.
In the utility model, the viscose rayon waste gas for collecting sends into alkali lye spray column by waste gas header, and spray column is used
The alkali lye of half fine content 3 ~ 20% is sprayed in alkali lye spray column, is obtained containing NaHS, vulcanized sodium and hemicellulose sodium sulfonate
Solution, sends into alkali lye spray column storage tank, and the solution delivers to retort by pump from alkali lye spray column storage tank, and from acid waste water
The acid waste water reaction of storage tank, reacted mixed solution enters degassing in degassing tower, obtains the carbon disulfide and sulphur of high concentration
Change hydrogen waste gas, wherein, Carbon Disulfide content >=25%, concentration of hydrogen sulfide content >=23%.
Further, the utility model is connected with cooling de-watering device in degassing tower outlet, cooling de-watering device include according to
The secondary knockout and filling cooling tower being connected with degassing tower outlet, knockout and filling cooling tower top are equipped with silk screen foam removal
Device.
In the utility model, filling cooling tower circulates wash cooling using 0~5 DEG C of cleaning solution, waste gas can be cooled into 0
After~10 DEG C, then through the wire mesh demister submitting of tower top, part carbon disulfide is condensed in waste gas, therefore, filled out described
Material cooling tower is provided with the carbon disulfide collecting tank for collecting condensate liquid.
Further to improve this process system to carbon disulfide and the rate of recovery of hydrogen sulfide, the utility model also includes connection
The acid solution degassing tower of acid solution storage tank, acid solution degassing tower outlet connection knockout, is stored with the acid solution from acid bath in acid solution storage tank,
This part acid solution is collected to acid solution storage tank, is isolated through acid solution degassing tower under the kPa pressure of -20kPa~-90 and is contained two sulphur
Change the waste gas of carbon and hydrogen sulfide, deliver to knockout, cooling de-watering treatment is carried out in the lump with the viscose rayon waste gas after enrichment.
The alkali lye spray column is the spray equipment that two-stage uses same absorbent liquid, and it is 70- that absorbing liquid can be used concentration
The absorbing liquid that the NaOH and concentration of 150g/l are constituted for the alkali cellulose of 30-110g/l.
The retort is the vacuum reaction device that pressure meets -50kpa~-90kpa.
The utility model compared with prior art, with advantages below and beneficial effect：
（1）The utility model can be used for the enrichment of carbon disulfide and hydrogen sulfide in viscose glue industry multi-site waste gas and acid solution,
By later separation step, the rate of recovery of carbon disulfide and hydrogen sulfide is improved, the carbon disulfide of recovery can return to viscose glue industry life
Produce, vulcanization Hydrogen Energy prepares sulfuric acid or sulfur product, is conducive to the control of production cost.
（2）By the way of the utility model is sprayed using absorbing liquid, acid water process is combined, to being dissipated from spinning, acid bath
The waste gas such as row are processed, and can produce the enrichment waste gas containing carbon disulfide and hydrogen sulfide of high concentration, are that next step reclaims circulation
Basis is determined using pad.
（3）The utility model is entered simultaneously using absorbing liquid in alkali lye spray column to the carbon disulfide and hydrogen sulfide in waste gas
Row absorb, the tail gas direct discharge up to standard after absorption, absorption process without environmental protection pressure, beneficial to environmental protection.
（4）The utility model is related to the absorbing liquid that alkali lye spray column is used to use, and to include concentration be 70-150g/l
NaOH and concentration be the alkali cellulose of 30-110g/l, the characteristics of with preparing simple, cheap, alkali cellulose mainly comes
It is also a kind of twice laid for viscose glue production from the salkali waste of the dipping process during glue, reduces environmental protection of enterprise pressure
Power.
（5）The acid waste water storage tank that the utility model is related to is used to collect sulfur acid waste water, and the sulfur acid waste water is exactly given birth to
The acid-bearing wastewater produced in product, such as plasticizing groove and the sulfuric acid wastewater containing contained to fine groove discharge, belong to viscose glue production twice laid.
（6）In the utility model, the sulfur acid waste water in acid waste water storage tank is by vacuum sucting reaction tank, alkali lye spray
Mixed solution in tower storage tank is sent by pumping to retort, and reaction is carried out in vacuum environment, prevents air entrance, on the one hand,
The safety of reaction process is can guarantee that, on the other hand, by vacuum degree control in the range of -50kpa~-90kpa, is conducive to continuous steady
Fixed acquisition enrichment waste gas, further improves the concentration of carbon disulfide and hydrogen sulfide.
Brief description of the drawings
Fig. 1 is process chart of the present utility model（One）.
Fig. 2 is process chart of the present utility model（Two）.
Wherein, 1-waste gas header, 2-alkali lye spray column, 3-retort, 4-degassing tower, 5-alkali lye spray column storage tank,
6-acid waste water storage tank, 7-knockout, 8-filling cooling tower, 9-carbon disulfide collecting tank, 10-acid solution storage tank, 11-acid
Liquid degassing tower.
Specific embodiment
The utility model is described in further detail with reference to embodiment, but implementation method of the present utility model is not
It is limited to this.
Embodiment 1：
The present embodiment is related to a kind of process system for being enriched with carbon disulfide and hydrogen sulfide in viscose rayon waste gas, such as Fig. 1 knots
Shown in structure, including alkali lye spray column 2, retort 3, degassing tower 4 and the cooling de-watering device of waste gas header 1 are sequentially connected, wherein,
The entrance of retort 3 connection alkali lye spray column storage tank 5 and acid waste water storage tank 6, the outlet connection degassing tower 4 of retort 3, cooling de-watering
Device includes exporting the knockout 7 and filling cooling tower 8 being connected, knockout 7 and the top of filling cooling tower 8 with degassing tower 4 successively
It is equipped with wire mesh demister.
The technological process that the present embodiment is related to is as follows：
（1）Viscose rayon waste gas is collected, is such as spun and is practiced alkali spray waste gas（Waste gas containing trench）, spin and practice the import and export of plasticizing groove, give
The waste gas such as fine groove, glassine paper waste gas, acid station dissipates exhaust etc., and alkali lye spray column 2 is sent into by waste gas header 1, and concentration is
The NaOH and concentration of 120g/l carry out two-stage spray, alkali lye for the absorbing liquid that the alkali cellulose of 100g/l is constituted to the waste gas
Spray column 2 uses turbulent tower, spray to obtain the solution containing NaHS, vulcanized sodium and hemicellulose sodium sulfonate, feeding alkali lye spray
Drench tower storage tank 5.
（2）Solution is delivered to by retort 3 from alkali lye spray column storage tank 5 by pump, flow is controlled in 8m3/ h, retort 3 is adopted
Use vacuum reaction device, pH value 2, the sulfur-bearing of concentration 10g/l that vacuum degree control is collected in -80kpa, acid waste water storage tank 6
By vacuum sucting reaction tank 3, with the solution reaction from alkali lye spray column storage tank 5, reacted mixed solution enters sour waste water
Deaerated in degassing tower 4, obtain the carbon disulfide and hydrogen sulfide waste gas of high concentration, wherein, Carbon Disulfide content 26%, vulcanization
Hydrogen concentration content >=24%.
（3）Above-mentioned high-concentration waste gas are sent into knockout 7, the top of knockout 7 sets wire mesh demister；By knockout 7 out
Waste gas feeding filling cooling tower 8, filling cooling tower 8 using 2 DEG C cleaning solution circulate wash cooling, waste gas is cooled to 4 DEG C
Afterwards, sent out through the wire mesh demister of tower top, Carbon Disulfide content 25%, concentration of hydrogen sulfide content 23%, water in gained waste gas
Divide content 0.5%, condensate liquid feeding carbon disulfide collecting tank 9.
By the waste gas of above-mentioned levels, condensation method is used（0.25~1.6MPa is forced into, condensation temperature is controlled -15
~0 DEG C）Respectively to its recovering liquid sulfur dioxide, the rate of recovery of sulfur dioxide can reach 80~95%.
Embodiment 2：
The present embodiment is related to a kind of process system for being enriched with carbon disulfide and hydrogen sulfide in viscose rayon waste gas, such as Fig. 2 knots
Shown in structure, in addition to including the alkali lye spray column 2 for being sequentially connected waste gas header 1, retort 3, degassing tower 4 and cooling de-watering device,
Also include the acid solution degassing tower 11 of connection acid solution storage tank 10.Wherein, the entrance of retort 3 connection alkali lye spray column storage tank 5 and acidity
Wastewater storage tank 6, the outlet connection degassing tower 4 of retort 3, cooling de-watering device includes the knockout 7 being sequentially connected and filler cooling
Tower 8, knockout 7 and the top of filling cooling tower 8 are equipped with wire mesh demister, and the outlet of degassing tower 4 and acid solution degassing tower 11 are exported
Connection knockout 7
The technological process that the present embodiment is related to is as follows：
（1）Viscose rayon waste gas is collected, is such as spun and is practiced alkali spray waste gas（Waste gas containing trench）, spin and practice the import and export of plasticizing groove, give
The waste gas such as fine groove, glassine paper waste gas, acid station dissipates exhaust etc., and alkali lye spray column 2 is sent into by waste gas header 1, and concentration is
The NaOH and concentration of 135g/l carry out two-stage spray, alkali lye for the absorbing liquid that the alkali cellulose of 98g/l is constituted to the waste gas
Spray column 2 uses turbulent tower, spray to obtain the solution containing NaHS, vulcanized sodium and hemicellulose sodium sulfonate, feeding alkali lye spray
Drench tower storage tank 5.
（2）Solution is delivered to by retort 3 from alkali lye spray column storage tank 5 by pump, flow is controlled in 8m3/ h, retort 3 is adopted
Use vacuum reaction device, pH value 1.5 that vacuum degree control is collected in -70kpa, acid waste water storage tank 6, concentration 20g/l contain
By vacuum sucting reaction tank 3, with the solution reaction from alkali lye spray column storage tank 5, reacted mixed solution enters sulfuric acid wastewater containing
Enter degassing in degassing tower 4, obtain the carbon disulfide and hydrogen sulfide waste gas of high concentration, wherein, Carbon Disulfide content 26.5%,
Concentration of hydrogen sulfide content >=28%.
（3）The acid solution that acid bath is produced is delivered into acid solution storage tank 10, is isolated through acid solution degassing tower 11 under -90 kPa pressure
Waste gas containing carbon disulfide and hydrogen sulfide.
（4）By step（2）With（3）The waste gas feeding knockout 7 of acquisition, the top of knockout 7 sets wire mesh demister；By a point liquid
The waste gas feeding filling cooling tower 8 out of device 7, filling cooling tower 8 circulates wash cooling using 2 DEG C of cleaning solution, and waste gas is cold
But to after 4 DEG C, sent out through the wire mesh demister of tower top, Carbon Disulfide content 28%, concentration of hydrogen sulfide content in gained waste gas
32%th, moisture 0.3%, condensate liquid feeding carbon disulfide collecting tank 9.
By the waste gas of above-mentioned levels, condensation method is used（0.25~1.6MPa is forced into, condensation temperature is controlled -15
~0 DEG C）Respectively to its recovering liquid carbon disulfide, the rate of recovery of carbon disulfide can reach 93%.
The above, is only preferred embodiment of the present utility model, and any formal limit is not done to the utility model
System, every any simple modification, equivalent variations made to above example according to technical spirit of the present utility model each fall within
Within protection domain of the present utility model.
Claims (6)
1. it is a kind of be enriched with viscose rayon waste gas in carbon disulfide and hydrogen sulfide process system, it is characterised in that：Including connecting successively
Connect waste gas header（1）Alkali lye spray column（2）, retort（3）And degassing tower（4）, retort（3）Entrance connects alkali lye spray column
Storage tank（5）With acid waste water storage tank（6）, retort（3）Outlet connection degassing tower（4）.
2. it is according to claim 1 it is a kind of be enriched with viscose rayon waste gas in carbon disulfide and hydrogen sulfide process system, its
It is characterised by：In degassing tower（4）Outlet is connected with cooling de-watering device, cooling de-watering device include successively with degassing tower（4）Go out
The connected knockout of mouth（7）And filling cooling tower（8）, knockout（7）And filling cooling tower（8）Top is equipped with silk screen foam removal
Device.
3. it is according to claim 2 it is a kind of be enriched with viscose rayon waste gas in carbon disulfide and hydrogen sulfide process system, its
It is characterised by：Described filler cooling tower（8）It is provided with the carbon disulfide collecting tank for collecting condensate liquid（9）.
4. it is according to claim 2 it is a kind of be enriched with viscose rayon waste gas in carbon disulfide and hydrogen sulfide process system, its
It is characterised by：Also include connection acid solution storage tank（10）Acid solution degassing tower（11）, acid solution degassing tower outlet connection knockout（7）.
5. it is according to claim 1 it is a kind of be enriched with viscose rayon waste gas in carbon disulfide and hydrogen sulfide process system, its
It is characterised by：The alkali lye spray column（2）For two-stage uses the spray equipment of same absorbent liquid.
6. it is according to claim 1 it is a kind of be enriched with viscose rayon waste gas in carbon disulfide and hydrogen sulfide process system, its
It is characterised by：The retort（3）The vacuum reaction device of -50kpa~-90kpa is met for pressure.
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| CN201621298661.8U CN206229190U (en) | 2016-11-30 | 2016-11-30 | A kind of process system for being enriched with carbon disulfide and hydrogen sulfide in viscose rayon waste gas |
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| CN201621298661.8U CN206229190U (en) | 2016-11-30 | 2016-11-30 | A kind of process system for being enriched with carbon disulfide and hydrogen sulfide in viscose rayon waste gas |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112452133A (en) * | 2020-11-25 | 2021-03-09 | 赛得利(九江)纤维有限公司 | Waste gas treatment process |
| CN115159610A (en) * | 2022-06-24 | 2022-10-11 | 唐山三友集团兴达化纤有限公司 | Efficient separation tower and system and method for purifying wastewater containing carbon disulfide |
-
2016
- 2016-11-30 CN CN201621298661.8U patent/CN206229190U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112452133A (en) * | 2020-11-25 | 2021-03-09 | 赛得利(九江)纤维有限公司 | Waste gas treatment process |
| CN115159610A (en) * | 2022-06-24 | 2022-10-11 | 唐山三友集团兴达化纤有限公司 | Efficient separation tower and system and method for purifying wastewater containing carbon disulfide |
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