CN104264255A - Waste water heat energy utilization method suitable for viscose staple fiber industry - Google Patents

Waste water heat energy utilization method suitable for viscose staple fiber industry Download PDF

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Publication number
CN104264255A
CN104264255A CN201410556295.0A CN201410556295A CN104264255A CN 104264255 A CN104264255 A CN 104264255A CN 201410556295 A CN201410556295 A CN 201410556295A CN 104264255 A CN104264255 A CN 104264255A
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water
temperature
heat exchange
heat exchanger
heat
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CN104264255B (en
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贺敏
张仁友
刘小军
汪学良
竭发全
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Yibin Grace Group Co Ltd
Yibin Haisite Fiber Co Ltd
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Yibin Grace Group Co Ltd
Yibin Haisite Fiber Co Ltd
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D13/00—Complete machines for producing artificial threads
    • D01D13/02—Elements of machines in combination
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
    • Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Water By Ion Exchange (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)

Abstract

The invention discloses a waste water heat energy utilization method suitable for viscose staple fiber industry, which comprises the treatment process of heat exchange and reutilization of waste hot water in the viscose staple fiber production, wherein the waste hot water comprises plasticizing tank overflow water, the treatment process comprises the step-by-step heat exchange of plasticizing tank supplement water, desulfurization liquid and packaging cooling water in sequence by using the plasticizing tank overflow water, the packaging cooling water is sent to a cutter after heat exchange, scouring water is obtained after the use of a refiner, and the scouring water is returned to the cutter or sent to a plasticizing tank supplement water tank to be used as the plasticizing tank supplement water. The invention can realize the comprehensive recovery and utilization of various waste hot water, can also carry out heat exchange treatment on specific media needing to be heated in the production of viscose staple fibers, fully utilizes the waste heat of the waste hot water, can promote the energy-saving and consumption-reducing work of enterprises on the premise of no flow loss on the basis of the existing process wastewater treatment, and has good social benefit and economic value.

Description

A kind of waste water heat energy utilization method being applicable to short rayon fiber industry
Technical field
The present invention is a kind of waste water heat energy utilization method being applicable to short rayon fiber industry, is specifically related to the wastewater utilization flow process for the purpose of saving energy and reduce the cost in short rayon fiber production process, belongs to viscose staple fibre production field.
Background technology
" energy consumption " is the important indicator that current era evaluates an Enterprise Integrated competitiveness, the existence that each enterprise is all considered as oneself " saving energy and reduce the cost " this, from drop cost declining, with best management and technology, realize the maximization of energy-saving benefit.For viscose staple fibre production, in its production process, have a large amount of spent hot waters discharge, if directly blowdown or simple heat exchange reclaim, will a large amount of heat energy loss be had, be unfavorable for that enterprise reduces production cost.For existing short fiber production technology, we know, the spent hot water in short fiber production process comprises: packing cooling water, oven dry steam condensate (SC), acid station multiple-effect evaporation water, refining wastewater, plasticizing groove overflow water, CS 2six kinds of waste water such as pre-cold water produce, and these waste water have part to be simply back to production, and have part to be then discharged and dispose, cause the waste of water resource, wherein, the reuse flow process of effluent part is as follows:
(1) packing cooling water, its reuse flow process as shown in Figure 1, the washing that refining tank field is used as fiber is delivered to again after packing cooling water cools hydraulic oil temperature indirectly, this flow process is the conventional flow process during short fiber is produced, there is following shortcoming: packing cooling water temperature is usually low 30 ~ 40 DEG C, but refining washing process temperature is all at 50 ~ 70 DEG C, if packing cooling water is directly added refining tank field to be used for fiber wash and certainly will to affect washing water temperature, to ensure that wash temperature then will certainly heat it, then cause waste of steam, improve production cost.
(2) drying condensation water, its reuse flow process as shown in Figure 2, after oven dry steam condensate (SC) first delivers to condensation water collection tank, deliver to the washing that refining tank field is used as fiber again, the defect that this flow process exists is: oven dry steam-condensation coolant-temperature gage is higher, normally 85 ~ 95 DEG C, but refining washing process temperature is all at 50 ~ 70 DEG C, if oven dry steam condensate (SC) is directly added refining tank field to be used for fiber wash wash temperature certainly will be made higher, affect fiber quality, also improve employee's operating environment temperature, also cause the waste of heat energy simultaneously, be unfavorable for carrying out smoothly of production.
(3) acid station multiple-effect evaporation water, its reuse flow process as shown in Figure 3, after acid station multiple-effect evaporation water is collected by collecting tank, deliver to plasticizing groove, use as plasticizing groove supplementing water, as patent document CN203295671U(mono-kind plastifies groove supplementing water feedway, 2013.11.20) a kind of water supply installation reducing soft water (supplementing water) and steam consumption is disclosed, after utilizing heater that the acid station multiple-effect water after heating is injected plasticizing groove, can while adaptation plasticizing groove technology controlling and process, save procedure of fibre production cost and energy consumption, the defect that this flow process exists is: acid station multiple-effect evaporation coolant-temperature gage, acid concentration, the parameters such as flow have unstability by the impact of acid station evaporation technology, in actual production process, often have influence on the technology controlling and process of plasticizing groove, moment needs employee to pay close attention to adjustment, add control difficulty, labour intensity is large.
(4) refining wastewater, its reuse flow process as shown in Figure 4, refining wastewater delivers to heat exchanger, for the chemical industry medicine company in production process carries out preheating, refining wastewater after heat exchange is used as cut-out again and rushes hair water (staple fibre cut off by cutting machine be called by the water that pipeline is flushed to lower operation (to fine groove) rush hair water), the defect that this flow process exists is: refining wastewater total amount is comparatively large, is generally 150 ~ 200m 3/ h, rush the consumption of hair water much larger than heat exchange and cut-out, cannot make full use of, redundance is directly drained, and causes waste and the loss of resource.
(5) groove overflow water is plastified, its reuse flow process as shown in Figure 5, plasticizing groove overflow water carries out preheating by heat exchanger to soft water, to obtain hot soft water required in production process, the defect that this flow process exists is: the plasticizing groove overflow water after heat exchange also has certain temperature, and heat energy is not fully utilized, and is disposed in sewage disposal by the plasticizing groove overflow water after heat exchange, also can cause environmental protection pressure, improve production cost.
In viscose glue production field, existing method of wastewater treatment comprises: the process carried out the acid waste water in viscose glue manufacture, this processing scheme can remove zinc, sulfide and solid suspension in waste water effectively, make it to reach discharge standard, as patent document CN1792858(process for treating acidic waste water of viscose fibre industry, 2006.06.28); Integrated treatment is carried out to the waste water in viscose glue manufacture, consider the governing problem of the salkali waste in viscose production, zinc-containing water, both the comprehensive utilization of resource had been reached, reduce waste discharge again, as the method and apparatus of waste water and gas in the production of patent document CN101343124(comprehensive regulation viscose, 2009.01.14), patent document CN103864260A(wastewater from viscose fiber producing processing method, 2014.06.18), patent document CN102351379A (a kind of viscose fiber waste water treatment method, 2012.02.15) etc.From the content of above-mentioned patent document, in existing method of wastewater treatment, waste water residual heat is not for recycling and reuse, while the above-mentioned wastewater treatment scheme of execution, waste water with waste heat also do not effectively utilized, for this reason, the present invention arises at the historic moment.
Summary of the invention
The object of the present invention is to provide a kind of waste water heat energy utilization method being applicable to short rayon fiber industry, this method overcomes existing short fiber and produces the defects such as the heat exchange process existed in waste heat heat exchange process is short, layout is single, residue heat energy is underused, making full use of of its heat energy is realized by the specific medium of stage-by-stage heat exchange (as: plasticizing groove supplementing water, doctor solution and packing cooling water), can based on the basis of existing technique waste water process, carry out under without the prerequisite of flow loss, the energy-saving and cost-reducing work of promoting enterprise, practical effect is good.
The present invention is achieved through the following technical solutions: a kind of waste water heat energy utilization method being applicable to short rayon fiber industry, it is short that this method overcomes the heat exchange process existed in existing short fiber production waste heat heat exchange process, layout is single, residue heat energy such as to underuse at the defect, the heat medium that needs during heat energy medium (spent hot water) is produced system step by step carries out step heat exchange, heat energy is fully absorbed, this method comprises carries out the processing procedure of heat exchange and recycling to spent hot water in short rayon fiber production, described spent hot water comprises plasticizing groove overflow water, in actual mechanical process, we know, plasticizing groove overflow water is mainly by plasticizing groove acid bath overflow, its temperature is higher, if only just discharge after simple heat exchange process, its heat is not then fully utilized, easily cause the waste of the energy, for this reason, described processing procedure comprises use plasticizing groove overflow water successively to plasticizing groove supplementing water, doctor solution and packing cooling water carry out stage-by-stage heat exchange, described packing cooling water delivers to cutter machine after heat exchange, obtain after being used by refiner again and rush hair water, the described mao water that rushes is back to cutter machine or delivers to plasticizing groove and supplements water pot and be used as plasticizing groove supplementing water and use, in the present invention, stage-by-stage heat exchange can not only utilize by the heat energy of step to plasticizing groove overflow water, remove plasticizing groove supplementing water, outside doctor solution and packing cooling water heat, save the consumption of steam, meanwhile, rush hair water also can recycle, such as, be back to cutter machine to be used as the use of gripping water or to deliver to plasticizing groove to supplement water pot as the use of plasticizing groove supplementing water, when reality uses, rush hair water to take up by rushing a mao water pot, permit depending on actual process condition, rush hair water and also can carry out above-mentioned recycling simultaneously, practicality is extremely strong.
For better realizing the stage-by-stage heat exchange plastifying groove overflow water, described processing procedure comprises the steps:
A: first-class heat exchanger is set, respectively plasticizing groove overflow water and plasticizing groove supplementing water are delivered in first-class heat exchanger and carry out heat exchange process, after heat exchange process, the plasticizing groove obtained supplements hot water and delivers to plasticizing groove, this step overcomes in prior art the mode of operation adopting steam to heat plasticizing groove supplementing water, avoids the consumption of steam, economize energy, the plasticizing groove overflow water at low temperature obtained after heat exchange process then delivers to secondary heat exchanger, the operation of completing steps B;
B: the doctor solution that desulfurization station uses is delivered in secondary heat exchanger, the plasticizing groove overflow water at low temperature obtained in steps A is utilized to carry out heat exchange process to it, in short fiber industry, doctor solution liquid is exclusively used in the elemental sulfur on removing fiber, after heat exchange process, the temperature of doctor solution raises, be applicable to the technological requirement that desulfurization station temperature controls at 55 ~ 68 DEG C, without the need to re-using steam to doctor solution heating and thermal insulation, after heat exchange process, desulfurization station delivered to by doctor solution, and plasticizing groove overflow water at low temperature then delivers to three grades of heat exchangers, the operation of completing steps C;
C: packing cooling water is delivered in three grades of heat exchangers, the plasticizing groove overflow water at low temperature in step B after heat exchange is utilized to carry out heat exchange process to it, after heat exchange process, obtain acid overflow water, deliver to sewage plant, packing cooling water then delivers to cutter machine, the operation of completing steps D, the packing cooling water delivering to cutter machine can be used as gripping water and uses, described gripping water is be the water of the long fibre generated after viscose glue reaction when cutting into staple fibre, this glassware for drinking water is at certain pressure, when practical operation, cutting machine used is flow type cutting machine, when strand enters cutting machine from entrance, that exceptionally straight straight line enters cutting machine to ensure to be strand, namely can use grip water (0.5Mpa pressure) by strand toward cutting machine to be with (punching)
D: after described packing cooling water delivers to refiner use by cutter machine, hair water is rushed in acquisition, the described mao water that rushes is back to cutter machine or delivers to plasticizing groove and supplements water pot and be used as plasticizing groove supplementing water and use, the described mao water that rushes is in refiner, the staple fibre water cut off by cutter machine is flushed to lower operation (to fine groove) by pipeline and obtains, rush hair glassware for drinking water and have higher temperature, its temperature is higher, more be beneficial to the evacuation of fiber in refiner, in this step, rush hair water recyclable enter to rush in hair water pot reuse, be used as the use of gripping water or deliver to plasticizing groove to supplement water pot as the use of plasticizing groove supplementing water as being back to cutter machine.
In the production process of short rayon fiber, be generally 60m from the flow of plasticizing groove plasticizing groove overflow water out 3/ h, and at first-class heat exchanger place, above-mentioned flow is less than again to the water yield of the plasticizing groove overflow water needed for the heat exchange of plasticizing groove supplementing water, therefore, for avoiding the waste plastifying groove overflow water, the present invention is communicated with feeder on described plasticizing groove, and two subregions are set in this feeder internal insulation, described subregion is respectively the high-temperature region of collecting plasticizing groove overflow water and the low-temperature space collecting the plasticizing groove overflow water at low temperature after first-class heat exchanger heat exchange, in actual use, plasticizing groove overflow water is first from the overflow of plasticizing groove in the high-temperature region of feeder, then deliver to first-class heat exchanger and heat exchange is carried out to plasticizing groove supplementing water, the plasticizing groove overflow water at low temperature obtained after heat exchange is then delivered in the low-temperature space of feeder, high-temperature region and low-temperature space are isolated respectively by overflow plate, when the flow plastifying groove overflow water is excessive, plasticizing groove overflow water unnecessary in high-temperature region directly can overflow to low-temperature space by overflow plate, send into secondary heat exchanger again, overflow plate can be avoided plastifying the mixing between groove overflow water and plasticizing groove overflow water at low temperature, prevent both from causing the reduction of part heat transfer effect because of mixing, during use, overflow plate also can realize the mutual switching of high-temperature region and low-temperature space, effectively can ensure that in feeder, thermal medium is not drained rapidly, practical effect is good.
In the production of short rayon fiber, the multiple-effect water at acid station can be used as plasticizing groove supplementing water and uses, and for this reason, the present invention supplements on water pot at described plasticizing groove and is also connected with multiple-effect water pot, and described multiple-effect water pot is the collecting tank taking up acid station multiple-effect water.
The present invention is reasonable in design, the temperature difference needing heat medium in utilizing short fiber to produce, step arrangement is carried out to it, then by plasticizing groove overflow water (thermal medium), stage-by-stage heat exchange is being carried out to it, its heat-exchanging process flow process is as follows: in described steps A, before first-class heat exchanger heat exchange process, the temperature of described plasticizing groove overflow water is 90 ~ 95 DEG C, the temperature of described plasticizing groove supplementing water is 60 ~ 65 DEG C, after first-class heat exchanger heat exchange process, the temperature of plasticizing groove overflow water at low temperature is 75 ~ 80 DEG C, and the temperature that plasticizing groove supplements hot water is 75 ~ 80 DEG C;
In described step B, before secondary heat exchanger heat exchange process, the temperature of described doctor solution is 55 ~ 60 DEG C, and after secondary heat exchanger heat exchange process, the temperature of doctor solution is 65 ~ 70 DEG C, and the temperature of plasticizing groove overflow water at low temperature is 70 ~ 80 DEG C;
In described step C, before three grades of heat exchanger heat exchange processors, the temperature of described packing cooling water is 10 ~ 20 DEG C, and after three grades of heat exchanger heat exchange processors, the temperature of packing cooling water is 45 ~ 50 DEG C, and the temperature of acid overflow water is 50 ~ 60 DEG C.
At the production field of short rayon fiber, described spent hot water also comprises refining sewer and refining overflow hot water, wherein, refining sewer be to fiber wash after sewer, after viscose glue generates fiber by chemical reaction, with more impurity (elemental sulfur etc.) above fiber, and these impurity need to carry out washing with the water of uniform temperature or liquid solution could remove; Refining overflow hot water is carried out flowing in a feeder again after stream is washed to fiber dimension by the water wash zone of refiner, carry out recycling and obtaining, described refiner is a washing facility: it comprises a Ge Gong17Ge district such as water wash zone, desulfurization zone (vulcanized sodium body lotion), bleaching district (hydrogen peroxide body lotion), the district that oils (finish bath), in the present invention, described heat exchange process also comprises the steps:
A: refined water heat exchanger and refining heat water-to-water heat exchanger are set, respectively refining sewer and production soft water are delivered to refined water heat exchanger and carry out heat exchange process, after heat exchange process, refining sewer delivers to sewage plant, produce soft water and then deliver to refining heat water-to-water heat exchanger, the operation of completing steps b;
B: refining overflow hot water is delivered in refining heat water-to-water heat exchanger, heat exchange process is carried out to the production soft water after heat exchange in step a, after heat exchange process, the production soft water obtained sends into system soft water, refining overflow hot water then delivers to sewage plant, in above-mentioned heat exchange process, refined water heat exchanger and refining heat water-to-water heat exchanger are connected mutually, and carry out heat exchange with production soft water, sewage plant is delivered to again after the heat energy of refining sewer and refining overflow hot water is utilized effectively, not only can utilize the heat energy of these two kinds of spent hot waters to greatest extent, effectively can also improve the serviceability temperature of producing soft water, producing soft water temperature rises fast, simultaneously, more decrease the steam use amount of post-order process, energy-saving and emission-reduction.
In described step a, before refined water heat exchanger heat exchange process, the temperature of described refining sewer is 55 ~ 60 DEG C, the temperature of described production soft water is 10 ~ 20 DEG C, after refined water heat exchanger heat exchange process, the temperature of refining sewer is 35 ~ 40 DEG C, without value, therefore deliver to sewage plant, the temperature of producing soft water is 30 ~ 35 DEG C;
In described step b, before refining heat water-to-water heat exchanger heat exchange process, the temperature of described refining overflow hot water is 55 ~ 60 DEG C, after refining heat water-to-water heat exchanger heat exchange process, the temperature of refining overflow hot water is 35 ~ 40 DEG C, without value, therefore deliver to sewage plant, the temperature of producing soft water is 35 ~ 40 DEG C.
At the production field of short rayon fiber, described spent hot water also comprises pre-cold water, this pre-cold water is the cooling water that carbon disulfide reclaims, carbon disulfide recovery process is: the carbon disulfide in tow is evaporated (evaporating temperature 95 ~ 98 DEG C) with steam, then condenser is sent into by closed conduit, condensation temperature due to carbon disulfide is 46.5 DEG C, so need to water filling in condenser, carbon disulfide and water vapour condensation thereof are got off, reclaim, the cooling water that this condensation is got off is pre-cold water, in the present invention, described heat exchange process also comprises: arrange pre-cold-water heat exchanger, respectively pre-cold water and refiner bleaching liquid are delivered to pre-cold-water heat exchanger and carry out heat exchange process, after heat exchange process, pre-cold water delivers to refiner scrubbing section, refiner bleaching district then delivered to by refiner bleaching liquid, above-mentioned heat exchange process reasonably make use of the heat energy more than needed of pre-cold water, not only heated refiner bleaching liquid (save and use steam) but also meet washing process requirement, by short rayon fiber production technology, we know, refiner bleaching liquid can select hydrogen peroxide, there is the effect of bleaching, newly-generated fiber is inadequate by means of only vulcanized sodium glue sulphur, therefore, for meeting fibre whiteness requirement, namely hydrogen peroxide is used to bleach fiber.
Before pre-cold-water heat exchanger process, the temperature of described pre-cold water is 80 ~ 85 DEG C, the temperature of described refiner bleaching liquid is 50 ~ 55 DEG C, after pre-cold-water heat exchanger process, the temperature of pre-cold water is 65 ~ 70 DEG C, its water temperature meets washing process requirement, therefore drops into refiner scrubbing section by after its heat exchange, and the temperature of refiner bleaching liquid is 56 ~ 60 DEG C.
At the production field of short rayon fiber, described spent hot water also comprises drying condensation water, this drying condensation water produces fiber dehumidifying primarily of dryer, therefore, in the present invention, described heat exchange process also comprises: arrange condensed water heat exchanger, after drying condensation water is delivered to finish chuck, deliver to condensed water heat exchanger again, heat exchange process is carried out to the finish body lotion delivering to condensed water heat exchanger, after heat exchange process, drying condensation water delivers to refiner scrubbing section, system petrol station then delivered to by finish body lotion, above-mentioned heat exchange process reasonably make use of drying condensation Shuifu County waste heat energy, not only finish is incubated, while heated finish body lotion (save and use steam), also meet the requirement of refiner washing process, when reality uses, first drying condensation water be used for the insulation of refining finish by finish chuck, its technological requirement temperature is 60 ~ 65 DEG C, more than 75 DEG C are remained on by the drying condensation coolant-temperature gage after finish chuck, and then deliver to condensed water heat exchanger and finish body lotion carries out heat exchange, operate very simple.In short rayon fiber is produced, the effect of finish body lotion is lubricated fiber, and avoid fiber to produce electrostatic, fiber is tied a knot, and is conducive to the use of downstream client.
Before the process of condensed water heat exchanger, the temperature of described drying condensation water is 85 ~ 90 DEG C, the temperature of described finish body lotion is 50 ~ 53 DEG C, after the process of condensed water heat exchanger, the temperature of drying condensation water is 65 ~ 75 DEG C, meet refining washing technological requirement, therefore dropped into refiner scrubbing section, the temperature of finish body lotion is 60 ~ 65 DEG C.
In the technological process of above-mentioned spent hot water, the conveying of each medium (as: drying condensation water, pre-cold water etc.) all comes from the pressure of pump, certainly, also can according to the actual setting position of equipment, carried by liquid level difference, in the production process of short rayon fiber, because the output of each hot and cold medium is different with consumption, collect changing the heat treated front/rear tank body that also can arrange to it, there is the effect of buffering.In each heat exchange processing procedure, the heat transmission equipment related to is as first-class heat exchanger, secondary heat exchanger, pre-cold-water heat exchanger etc., the mode of separate unit or multiple stage series/parallel can be adopted to arrange, mainly determine according to the heat exchange area of heat transmission equipment, if the heat exchange area of heat transmission equipment is larger, separate unit heat transmission equipment can be adopted, if heat exchange area is less, efficiency is lower, then can adopt the parallel connection of multiple stage heat transmission equipment or series system, when reality uses, above-mentioned heat transmission equipment can select plate type heat exchanger, pipe heat exchanger, all kinds of heat exchanger such as finned.
The present invention compared with prior art, has the following advantages and beneficial effect:
(1) heat energy comprehensive cyclic utilization method involved in the present invention is in producing according to short rayon fiber, various spent hot water (as: plasticizing groove condensed water, refining sewer, refining overflow hot water, drying condensation water, pre-cold water) difference of heat content and purposes, adopt different recovery process respectively, realize the heat exchange process specifically needing heat medium to carry out during short rayon fiber is produced, make use of the waste heat of spent hot water fully, can based on the basis of existing technique waste water process, carry out under without the prerequisite of flow loss, the energy-saving and cost-reducing work of promoting enterprise, there is good social benefit and economic worth.
(2) heat energy that the present invention relates to plasticizing groove overflow water is recycled technology, by realizing making full use of of heat energy to the processing mode of plasticizing groove overflow water stage-by-stage heat exchange, comprise thermoplastification groove supplementing water, doctor solution and the heating gripping water, compensate for the energy waste that existing plasticizing groove overflow water waste heat and water resource are failed to be fully recycled and caused, there is good economic worth.
(3) the present invention can realize rushing recycling of hair water, rush the hair water pot mao water that liquidates reclaim by arranging, then cutter machine is being delivered to, be used as to grip water and continue to be fed into the cut-out that refiner carries out fiber, when reality uses, what also have the packing cooling water after heat exchange to continue due to cutter machine adds, therefore, water for rushing hair also has more than needed, the present invention changes the outer mode draining into sewage plant, premised on saving water resource, mao water that rushes rushed in hair water pot is delivered to plasticizing groove after filtering and is supplemented water pot, be used as plasticizing groove supplementing water to use, practicality is extremely strong.
(4) the present invention is by arranging multiple-effect water pot, the multiple-effect water at acid station can be delivered to plasticizing groove through multiple-effect water pot and supplement water pot as the use of plasticizing groove supplementing water, not only save the consumption of water resource, simultaneously, also avoid and answer multiple-effect water to be directly disposed to sewage plant and the environmental protection pressure caused, be conducive to the production cost reducing enterprise, have social benefit.
(5) structure of the present invention is simple, collect from plasticizing groove plasticizing groove overflow water feeder out, its inside forms high-temperature region and low-temperature space by overflow plate subregion, when reality uses, overflow plate can be avoided plastifying the mixing between groove overflow water and plasticizing groove overflow water at low temperature, prevent both from causing the reduction of part heat transfer effect because of mixing, Practical Performance is good.
(6) the present invention is reasonable in design, for convenience of short rayon fiber produce in each hot and cold medium carry out heat exchange process smoothly, collect respectively at the forward and backward tank body that also can arrange of each heat transmission equipment, there is the effect of buffering.
(7) heat energy that the present invention relates to refining sewer and refining overflow hot water is recycled technology, the mode of series connection heat exchange is adopted to process its heat energy, obtain while effectively (to greatest extent) utilizes at the heat energy of refining sewer and refining overflow hot water, the firing rate of producing soft water temperature can also be improved, refining sewer after heat exchange and refining overflow hot water are after heat exchange, temperature is 35 ~ 45 DEG C, without value, can directly drain into sewage plant and process.
(8) heat energy that the present invention relates to pre-cold water is recycled technology, the heat more than needed of pre-cold water is fully utilized in heating the refiner bleaching liquid (as: hydrogen peroxide) bleached fiber, save the steam needed for refiner bleaching liquid heated, pre-cold water is after heat exchange process, its temperature can reach between 65 ~ 70 DEG C, meets the washing process requirement of refiner, therefore, pre-cold water after heat exchange is sent to refiner scrubbing section, meets energy-saving and cost-reducing production theory.
(9) heat energy that the invention still further relates to drying condensation water is recycled technology, in this reuse process, the insulation of finish, heating finish body lotion can be realized, drying condensation water after heat exchange also meets water-based technological requirement simultaneously, directly can deliver to system washing erect-position and put into production, operating very simple.
Accompanying drawing explanation
Fig. 1 is the reuse FB(flow block) of cooling water of packing in prior art.
Fig. 2 is the reuse FB(flow block) of drying condensation water in prior art.
Fig. 3 is the reuse FB(flow block) of acid station multiple-effect evaporation water in prior art.
Fig. 4 is the reuse FB(flow block) of refining wastewater in prior art.
Fig. 5 is the reuse FB(flow block) plastifying groove overflow water in prior art.
Fig. 6 is the process flow block diagram of plasticizing groove overflow water of the present invention.
Fig. 7 is the process flow block diagram of refining wastewater of the present invention.
Fig. 8 is the process flow block diagram of pre-cold water of the present invention and drying condensation water.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment 1:
The present invention relates to a kind of waste water heat energy utilization method being applicable to short rayon fiber industry, this technique comprises carries out the processing procedure of heat exchange and recycling to spent hot water in short rayon fiber production, wherein, spent hot water comprises plasticizing groove overflow water, in the prior art, the waste heat of plasticizing groove overflow water adopts heat exchange process as shown in Figure 5 to process usually, from plasticizing groove plasticizing groove overflow water out, temperature is 90 ~ 95 DEG C, after simple heat exchange, plasticizing groove overflow water also leaves waste heat, temperature is 70 ~ 80 DEG C, namely be disposed to sewage plant to process, its heat energy is not fully utilized, for this reason, the present embodiment adopts following heat exchange process, that is: step heat exchange is carried out to plasticizing groove overflow water, use plasticizing groove overflow water successively to plasticizing groove supplementing water, doctor solution and packing cooling water carry out stage-by-stage heat exchange, the heat energy of plasticizing groove overflow water is utilized, in this handling process, packing cooling water delivers to cutter machine after heat exchange, obtain after being used by refiner again and rush hair water, the described mao water that rushes is back to cutter machine or delivers to plasticizing groove and supplements water pot and be used as plasticizing groove supplementing water and use.
Embodiment 2:
The difference of the present embodiment and embodiment 1 is: in the present embodiment, and the stage-by-stage heat exchange of plasticizing groove overflow water comprises plasticizing groove supplementing water, doctor solution and the stage-by-stage heat exchange gripping water, and its treatment step is as follows:
A: first-class heat exchanger is set, plasticizing groove overflow water and plasticizing groove supplementing water are delivered in first-class heat exchanger respectively and carry out heat exchange process, after heat exchange process, the plasticizing groove of acquisition supplements hot water and delivers to plasticizing groove, the plasticizing groove overflow water at low temperature obtained then delivers to secondary heat exchanger, the operation of completing steps B;
B: the doctor solution that desulfurization station uses is delivered in secondary heat exchanger, utilize the plasticizing groove overflow water at low temperature obtained in steps A to carry out heat exchange process to it, after heat exchange process, desulfurization station delivered to by doctor solution, plasticizing groove overflow water at low temperature then delivers to three grades of heat exchangers, the operation of completing steps C;
C: delivered to by packing cooling water in three grades of heat exchangers, utilizes the plasticizing groove overflow water at low temperature in step B after heat exchange to carry out heat exchange process to it, after heat exchange process, obtain acid overflow water, deliver to sewage plant, packing cooling water then delivers to cutter machine, the operation of completing steps D;
D: described packing cooling water is delivered to after refiner uses by cutter machine, obtains and rushes hair water, the described mao water that rushes is back to cutter machine or delivers to plasticizing groove and supplements water pot and be used as plasticizing groove supplementing water and use.
Embodiment 3:
The difference of the present embodiment and embodiment 1 is: in the present embodiment, the stage-by-stage heat exchange of plasticizing groove overflow water comprises plasticizing groove supplementing water, vulcanized sodium body lotion and the stage-by-stage heat exchange gripping water, simultaneously, plasticizing groove is communicated with feeder, its inside is isolated by overflow plate is arranged to two subregions, is respectively high-temperature region and low-temperature space.
The treatment step of the plasticizing groove overflow water that the present embodiment relates to comprises:
(1) plastify the high-temperature region of the plasticizing groove overflow water overflow in groove to feeder, the temperature of described plasticizing groove overflow water is 95 DEG C;
(2) the plasticizing groove supplementing water of 65 DEG C that to be the plasticizing groove overflow water of 95 DEG C and temperature respectively by temperature in high-temperature region be is delivered in first-class heat exchanger and is carried out heat exchange process, after heat exchange process, obtaining temperature is that the plasticizing groove of 80 DEG C supplements hot water and delivers to plasticizing groove, and obtaining temperature is the low-temperature space that the plasticizing groove overflow water at low temperature of 85 DEG C then delivers to feeder;
(3) doctor solution to be the plasticizing groove overflow water at low temperature of 85 DEG C and temperature by temperature in low-temperature space the be desulfurization station of 60 DEG C is delivered in secondary heat exchanger and is carried out heat exchange process, after heat exchange process, the temperature of doctor solution is 70 DEG C, delivers to desulfurization station, the temperature of plasticizing groove overflow water at low temperature is 80 DEG C, for subsequent use;
(4) to be the plasticizing groove overflow water at low temperature of 80 DEG C and temperature by the temperature that above-mentioned steps obtains be, and the packing cooling water of 20 DEG C delivers in three grades of heat exchangers carries out heat exchange process, after heat exchange process, obtain the acid overflow water that temperature is 60 DEG C, deliver to sewage plant, the temperature of acquisition is that the gripping water of 50 DEG C is then delivered to cutter machine and is used as to grip water and uses.
(5) obtain packing cooling water through above-mentioned steps and deliver to refiner as after the use of gripping water by cutter machine, hair water is rushed in acquisition, and arrange and rush hair water pot and reclaim, this rushes Mao Shuike and is back to cutter machine and recycles or deliver to plasticizing groove and supplement water pot and be used as plasticizing groove supplementing water and use.
Embodiment 4:
The difference of the present embodiment and embodiment 3 is: except plastifying the recycling of groove overflow water, and the present embodiment also relates to the energy recovery of refining sewer and refining overflow hot water.
The treatment step of the refining sewer that the present embodiment relates to and refining overflow hot water comprises:
(1) refined water heat exchanger and refining heat water-to-water heat exchanger are set, to be the refining sewer of 55 ~ 60 DEG C and temperature respectively by temperature be, and the production soft water of 20 DEG C delivers to refined water heat exchanger carries out heat exchange process, after heat exchange process, the temperature of refining sewer is 40 DEG C, this temperature is without value, directly can deliver to sewage plant, after the heat exchange of production soft water, temperature is then 35 DEG C;
(2) to be the production soft water of 35 DEG C and temperature by the temperature that above-mentioned steps obtains be, and the refining overflow hot water of 60 DEG C delivers in refining heat water-to-water heat exchanger carries out heat exchange process, after heat exchange process, the temperature of the production soft water obtained is 40 DEG C, meet washing process requirement, feeding system soft water puts into production, the temperature of refining overflow hot water is down to, and delivers to 40 DEG C, without value, can directly deliver to sewage plant and process.
Embodiment 5:
The difference of the present embodiment and embodiment 3 is: except plastifying the recycling of groove overflow water, the present embodiment also relates to the energy recovery of pre-cold water.
The treatment step of the pre-cold water that the present embodiment relates to comprises: arrange pre-cold-water heat exchanger, to be the pre-cold water of 85 DEG C and temperature respectively by temperature be, and the refiner bleaching liquid of 55 DEG C delivers to pre-cold-water heat exchanger carries out heat exchange process, after heat exchange process, the temperature of pre-cold water is 70 DEG C, can deliver to refiner scrubbing section, the temperature of refiner bleaching liquid is 60 DEG C, can deliver to refiner bleaching district, in the present embodiment, refiner bleaching liquid can select hydrogen peroxide.
Embodiment 6:
The difference of the present embodiment and embodiment 3 is: except the heat energy plastifying groove overflow water is recycled, and the present embodiment also relates to the energy recovery of drying condensation water.
The treatment step of the pre-cold water that the present embodiment relates to comprises: arrange condensed water heat exchanger, be that the drying condensation water of 90 DEG C is delivered to finish chuck and is used for the insulation of refining finish by temperature, more than 75 DEG C are still remained on by the temperature of the drying condensation water after finish chuck, and deliver to condensed water heat exchanger, heat exchange process is carried out to the finish body lotion that the temperature delivering to condensed water heat exchanger is 53 DEG C, after heat exchange process, the temperature of drying condensation water is down to 75 DEG C, meet refining washing technological requirement, therefore dropped into washing erect-position, namely refiner scrubbing section is delivered to, the temperature of finish body lotion is 65 DEG C, and deliver to system petrol station.
Embodiment 7:
The spent hot water that the present embodiment relates to comprises plasticizing groove condensed water, refining sewer, refining overflow hot water, pre-cold water, drying condensation water, and its heat energy handling process is as follows:
The handling process of plasticizing groove condensed water as shown in Figure 6, comprise three grades of heat exchange and rush the cycling and reutilization of hair water, wherein, one-level heat exchange process comprises: the plasticizing groove overflow water in plasticizing groove first overflow to the high-temperature region of feeder, the temperature of this plasticizing groove overflow water is 90 DEG C, and flow is 50m 3/ h; Use delivery pump to be the plasticizing groove overflow water of 90 DEG C and temperature respectively by temperature in high-temperature region to be the plasticizing groove supplementing water of 60 DEG C to deliver in first-class heat exchanger and carry out heat exchange process, be the heat exchange efficiency adapting to plasticizing groove supplementing water, the flow of plasticizing groove supplementing water should meet 50m 3/ h, after heat exchange process, obtaining temperature is that the plasticizing groove of 75 DEG C supplements hot water and delivers to plasticizing groove, obtain temperature be 75 DEG C plasticizing groove overflow water at low temperature again by delivery pump with 50m 3the flow of/h delivers to the low-temperature space of feeder; Secondary heat exchange comprises: the doctor solution to be the plasticizing groove overflow water at low temperature of 75 DEG C and temperature by temperature in above-mentioned low-temperature space the be desulfurization station of 55 DEG C is delivered in secondary heat exchanger and carried out heat exchange process, and for meeting heat exchange efficiency, doctor solution should with 50m 3the flow of/h delivers to secondary heat exchanger, and after heat exchange process, the temperature of doctor solution is 65 DEG C, delivers to desulfurization station, and the temperature of plasticizing groove overflow water at low temperature is 70 DEG C, and flow is 50m 3/ h; Three grades of heat exchange comprise: temperature above-mentioned steps obtained is that the plasticizing groove overflow water at low temperature of 70 DEG C is with 50m 3the flow of/h and temperature are 10 DEG C, flow is 20m 3the packing cooling water of/h is delivered in three grades of heat exchangers and is carried out heat exchange process, after heat exchange process, obtains the acid overflow water that temperature is 50 DEG C, with 50m 3the flow of/h delivers to sewage plant, and the temperature of acquisition is that the gripping water of 45 DEG C is then with 20m 3the flow of/h is delivered to cutter machine and is used as to grip water use.In the present invention, after packing cooling water delivers to refiner use by cutter machine, can obtain and rush hair water, and rush hair water pot and reclaim, reclaim obtain rush Mao Shuike be back to cutter machine continue to serve as grip water circulation use, or, plasticizing groove can be delivered to and supplement water pot as the use of plasticizing groove supplementing water, when reality uses, for reducing the environmental protection pressure that acid station multiple-effect water causes sewage plant, also multiple-effect water pot can be set, the acid station multiple-effect water collected in tank is delivered to plasticizing groove and supplement water pot as the use of plasticizing groove supplementing water, also there is saving water resource consumption, reduce the advantage of enterprise's production cost.
Data in above-mentioned flow process are added up, as shown in table 1:
Table 1
The heat energy handling process of refining sewer and refining overflow hot water as shown in Figure 7, refining sewer and refining overflow hot water carry out heat exchange through refined water heat exchanger and refining heat water-to-water heat exchanger respectively, refined water heat exchanger and refining heat water-to-water heat exchanger are connected mutually, its heat transfer process is as follows: to be the refining sewer of 55 DEG C and temperature be temperature that the production soft water of 10 DEG C is sent to refined water heat exchanger carries out heat exchange process, after heat exchange process, the temperature of refining sewer is 35 DEG C, this temperature is without value, directly can deliver to sewage plant, after the heat exchange of production soft water, temperature is then 30 DEG C, be that the refining overflow hot water of 55 DEG C is delivered in refining heat water-to-water heat exchanger and carried out heat exchange process by the production soft water after above-mentioned heat exchange and temperature, after heat exchange process, the temperature of the production soft water obtained is 35 DEG C, meet washing process requirement, feeding system soft water puts into production, the temperature of refining overflow hot water is down to, and delivers to 35 DEG C, without value, can directly deliver to sewage plant and process.
Data in above-mentioned flow process are added up, as shown in table 2:
Table 2
The heat energy handling process of pre-cold water as shown in Figure 8, the treatment step of the pre-cold water that the present embodiment relates to comprises: to temperature, to be the pre-cold water of 80 DEG C and temperature be that the refiner bleaching liquid of 50 DEG C carries out heat exchange process respectively to utilize pre-cold-water heat exchanger, after heat exchange process, the temperature of pre-cold water is 65 DEG C, can deliver to refiner scrubbing section, the temperature of refiner bleaching liquid is 56 DEG C, can deliver to refiner bleaching district, in the present embodiment, refiner bleaching liquid can select hydrogen peroxide.
Data in above-mentioned flow process are added up, as shown in table 3:
Table 3
The heat energy handling process of drying condensation water as shown in Figure 8, the treatment step of the drying condensation water that the present embodiment relates to comprises: first, be that the drying condensation water of 85 DEG C is delivered to finish chuck and is used for the insulation of refining finish by temperature, more than 75 DEG C are still remained on by the temperature of the drying condensation water after finish chuck, and deliver to condensed water heat exchanger, heat exchange process is carried out to the finish body lotion that the temperature delivering to condensed water heat exchanger is 50 DEG C, after heat exchange process, the temperature of drying condensation water is down to 65 DEG C, meet refining washing technological requirement, therefore dropped into washing erect-position, deliver to refiner scrubbing section, the temperature of finish body lotion is 60 DEG C, and deliver to system petrol station.
Data in above-mentioned flow process are added up, as shown in table 4:
Table 4
Embodiment 8:
The spent hot water that the present embodiment relates to comprises plasticizing groove condensed water, refining sewer, refining overflow hot water, pre-cold water, drying condensation water, and its heat energy handling process is as follows:
The heat energy handling process of plasticizing groove condensed water as shown in Figure 6, comprise three grades of heat exchange and rush the cycling and reutilization of hair water, wherein, one-level heat exchange process comprises: the plasticizing groove overflow water in plasticizing groove first overflow to the high-temperature region of feeder, the temperature of this plasticizing groove overflow water is 92 DEG C, and flow is 60m 3/ h; Use delivery pump to be the plasticizing groove overflow water of 92 DEG C and temperature respectively by temperature in high-temperature region to be the plasticizing groove supplementing water of 62 DEG C to deliver in first-class heat exchanger and carry out heat exchange process, be the heat exchange efficiency adapting to plasticizing groove supplementing water, the flow of plasticizing groove supplementing water should meet 60m 3/ h, after heat exchange process, obtaining temperature is that the plasticizing groove of 77 DEG C supplements hot water and delivers to plasticizing groove, obtain temperature be 80 DEG C plasticizing groove overflow water at low temperature again by delivery pump with 60m 3the flow of/h delivers to the low-temperature space of feeder; Secondary heat exchange comprises: the doctor solution to be the plasticizing groove overflow water at low temperature of 80 DEG C and temperature by temperature in above-mentioned low-temperature space the be desulfurization station of 57 DEG C is delivered in secondary heat exchanger and carried out heat exchange process, and for meeting heat exchange efficiency, doctor solution should with 60m 3the flow of/h delivers to secondary heat exchanger, and after heat exchange process, the temperature of doctor solution is 67 DEG C, delivers to desulfurization station, and the temperature of plasticizing groove overflow water at low temperature is 75 DEG C, and flow is 60m 3/ h; Three grades of heat exchange comprise: temperature above-mentioned steps obtained is that the plasticizing groove overflow water at low temperature of 75 DEG C is with 60m 3the flow of/h and temperature are 15 DEG C, flow is 30m 3the gripping water of/h is delivered in three grades of heat exchangers and is carried out heat exchange process, after heat exchange process, obtains the acid overflow water that temperature is 55 DEG C, with 60m 3the flow of/h delivers to sewage plant, and the temperature of acquisition is that the gripping water of 47 DEG C is then with 30m 3the flow of/h is delivered to cutter machine and is used as to grip water use.In the present invention, after packing cooling water delivers to refiner use by cutter machine, can obtain and rush hair water, and rush hair water pot and reclaim, reclaim obtain rush Mao Shuike be back to cutter machine continue to serve as grip water circulation use, or, plasticizing groove can be delivered to and supplement water pot as the use of plasticizing groove supplementing water, when reality uses, for reducing the environmental protection pressure that acid station multiple-effect water causes sewage plant, also multiple-effect water pot can be set, the acid station multiple-effect water collected in tank is delivered to plasticizing groove and supplement water pot as the use of plasticizing groove supplementing water, also there is saving water resource consumption, reduce the advantage of enterprise's production cost.
Data in above-mentioned flow process are added up, as shown in table 5:
Table 5
The heat energy handling process of refining sewer and refining overflow hot water as shown in Figure 7, refining sewer and refining overflow hot water carry out heat exchange through refined water heat exchanger and refining heat water-to-water heat exchanger respectively, refined water heat exchanger and refining heat water-to-water heat exchanger are connected mutually, its heat transfer process is as follows: to be the refining sewer of 57 DEG C and temperature be temperature that the production soft water of 15 DEG C is sent to refined water heat exchanger carries out heat exchange process, after heat exchange process, the temperature of refining sewer is 34 DEG C, this temperature is without value, directly can deliver to sewage plant, after the heat exchange of production soft water, temperature is then 32 DEG C, be that the refining overflow hot water of 57 DEG C is delivered in refining heat water-to-water heat exchanger and carried out heat exchange process by the production soft water after above-mentioned heat exchange and temperature, after heat exchange process, the temperature of the production soft water obtained is 36 DEG C, meet washing process requirement, feeding system soft water puts into production, the temperature of refining overflow hot water is down to, and delivers to 38 DEG C, without value, can directly deliver to sewage plant and process.
Data in above-mentioned flow process are added up, as shown in table 6:
Table 6
The heat energy handling process of pre-cold water as shown in Figure 8, the treatment step of the pre-cold water that the present embodiment relates to comprises: to temperature, to be the pre-cold water of 82 DEG C and temperature be that the refiner bleaching liquid of 52 DEG C carries out heat exchange process respectively to utilize pre-cold-water heat exchanger, after heat exchange process, the temperature of pre-cold water is 67 DEG C, can deliver to refiner scrubbing section, the temperature of refiner bleaching liquid is 58 DEG C, can deliver to refiner bleaching district, in the present embodiment, refiner bleaching liquid can select hydrogen peroxide.
Data in above-mentioned flow process are added up, as shown in table 7:
Table 7
The heat energy handling process of drying condensation water as shown in Figure 8, the treatment step of the drying condensation water that the present embodiment relates to comprises: first, be that the drying condensation water of 87 DEG C is delivered to finish chuck and is used for the insulation of refining finish by temperature, more than 75 DEG C are still remained on by the temperature of the drying condensation water after finish chuck, and deliver to condensed water heat exchanger, heat exchange process is carried out to the finish body lotion that the temperature delivering to condensed water heat exchanger is 51 DEG C, after heat exchange process, the temperature of drying condensation water is down to 70 DEG C, meet refining washing technological requirement, therefore dropped into washing erect-position, deliver to refiner scrubbing section, the temperature of finish body lotion is 62 DEG C, and deliver to system petrol station.
Data in above-mentioned flow process are added up, as shown in table 8:
Table 8
Embodiment 9:
The spent hot water that the present embodiment relates to comprises plasticizing groove condensed water, refining sewer, refining overflow hot water, pre-cold water, drying condensation water, and its heat energy handling process is as follows:
The heat energy handling process of plasticizing groove condensed water as shown in Figure 6, comprise three grades of heat exchange and rush the cycling and reutilization of hair water, wherein, one-level heat exchange process comprises: the plasticizing groove overflow water in plasticizing groove first overflow to the high-temperature region of feeder, the temperature of this plasticizing groove overflow water is 93 DEG C, and flow is 55m 3/ h; Use delivery pump to be the plasticizing groove overflow water of 93 DEG C and temperature respectively by temperature in high-temperature region to be the plasticizing groove supplementing water of 64 DEG C to deliver in first-class heat exchanger and carry out heat exchange process, be the heat exchange efficiency adapting to plasticizing groove supplementing water, the flow of plasticizing groove supplementing water should meet 55m 3/ h, after heat exchange process, obtaining temperature is that the plasticizing groove of 78 DEG C supplements hot water and delivers to plasticizing groove, obtain temperature be 82 DEG C plasticizing groove overflow water at low temperature again by delivery pump with 55m 3the flow of/h delivers to the low-temperature space of feeder; Secondary heat exchange comprises: the doctor solution to be the plasticizing groove overflow water at low temperature of 82 DEG C and temperature by temperature in above-mentioned low-temperature space the be desulfurization station of 58 DEG C is delivered in secondary heat exchanger and carried out heat exchange process, and for meeting heat exchange efficiency, doctor solution should with 55m 3the flow of/h delivers to secondary heat exchanger, and after heat exchange process, the temperature of doctor solution is 69 DEG C, delivers to desulfurization station, and the temperature of plasticizing groove overflow water at low temperature is 78 DEG C, and flow is 55m 3/ h; Three grades of heat exchange comprise: temperature above-mentioned steps obtained is that the plasticizing groove overflow water at low temperature of 78 DEG C is with 55m 3the flow of/h and temperature are 18 DEG C, flow is 25m 3the gripping water of/h is delivered in three grades of heat exchangers and is carried out heat exchange process, after heat exchange process, obtains the acid overflow water that temperature is 58 DEG C, with 55m 3the flow of/h delivers to sewage plant, and the temperature of acquisition is that the gripping water of 48 DEG C is then with 25m 3the flow of/h is delivered to cutter machine and is used as to grip water use.In the present invention, after packing cooling water delivers to refiner use by cutter machine, can obtain and rush hair water, and rush hair water pot and reclaim, reclaim obtain rush Mao Shuike be back to cutter machine continue to serve as grip water circulation use, or, plasticizing groove can be delivered to and supplement water pot as the use of plasticizing groove supplementing water, when reality uses, for reducing the environmental protection pressure that acid station multiple-effect water causes sewage plant, also multiple-effect water pot can be set, the acid station multiple-effect water collected in tank is delivered to plasticizing groove and supplement water pot as the use of plasticizing groove supplementing water, also there is saving water resource consumption, reduce the advantage of enterprise's production cost.
Data in above-mentioned flow process are added up, as shown in table 9:
Table 9
The heat energy handling process of refining sewer and refining overflow hot water as shown in Figure 7, refining sewer and refining overflow hot water carry out heat exchange through refined water heat exchanger and refining heat water-to-water heat exchanger respectively, refined water heat exchanger and refining heat water-to-water heat exchanger are connected mutually, its heat transfer process is as follows: to be the refining sewer of 58 DEG C and temperature be temperature that the production soft water of 18 DEG C is sent to refined water heat exchanger carries out heat exchange process, after heat exchange process, the temperature of refining sewer is 38 DEG C, this temperature is without value, directly can deliver to sewage plant, after the heat exchange of production soft water, temperature is then 34 DEG C, be that the refining overflow hot water of 58 DEG C is delivered in refining heat water-to-water heat exchanger and carried out heat exchange process by the production soft water after above-mentioned heat exchange and temperature, after heat exchange process, the temperature of the production soft water obtained is 37 DEG C, meet washing process requirement, feeding system soft water puts into production, the temperature of refining overflow hot water is down to, and delivers to 38 DEG C, without value, can directly deliver to sewage plant and process.
Data in above-mentioned flow process are added up, as shown in table 10:
Table 10
The heat energy handling process of pre-cold water as shown in Figure 8, the treatment step of the pre-cold water that the present embodiment relates to comprises: to temperature, to be the pre-cold water of 84 DEG C and temperature be that the refiner bleaching liquid of 54 DEG C carries out heat exchange process respectively to utilize pre-cold-water heat exchanger, after heat exchange process, the temperature of pre-cold water is 68 DEG C, can deliver to refiner scrubbing section, the temperature of refiner bleaching liquid is 59 DEG C, can deliver to refiner bleaching district, in the present embodiment, refiner bleaching liquid can select hydrogen peroxide.
Data in above-mentioned flow process are added up, as shown in table 11:
Table 11
The heat energy handling process of drying condensation water as shown in Figure 8, the treatment step of the drying condensation water that the present embodiment relates to comprises: first, be that the drying condensation water of 88 DEG C is delivered to finish chuck and is used for the insulation of refining finish by temperature, more than 75 DEG C are still remained on by the temperature of the drying condensation water after finish chuck, and deliver to condensed water heat exchanger, heat exchange process is carried out to the finish body lotion that the temperature delivering to condensed water heat exchanger is 52 DEG C, after heat exchange process, the temperature of drying condensation water is down to 69 DEG C, meet refining washing technological requirement, therefore dropped into washing erect-position, deliver to refiner scrubbing section, the temperature of finish body lotion is 64 DEG C, and deliver to system petrol station.
Data in above-mentioned flow process are added up, as shown in table 12:
Table 12
The above is only preferred embodiment of the present invention, and not do any pro forma restriction to the present invention, every any simple modification, equivalent variations done above embodiment according to technical spirit of the present invention, all falls within protection scope of the present invention.

Claims (11)

1. one kind is applicable to the waste water heat energy utilization method of short rayon fiber industry, it is characterized in that: this method comprises carries out the processing procedure of heat exchange and recycling to spent hot water in short rayon fiber production, described spent hot water comprises plasticizing groove overflow water, described processing procedure comprises use plasticizing groove overflow water successively to plasticizing groove supplementing water, doctor solution and packing cooling water carry out stage-by-stage heat exchange, described packing cooling water delivers to cutter machine after heat exchange, obtain after being used by refiner again and rush hair water, the described mao water that rushes is back to cutter machine or delivers to plasticizing groove and supplements water pot and be used as plasticizing groove supplementing water and use.
2. a kind of waste water heat energy utilization method being applicable to short rayon fiber industry according to claim 1, is characterized in that: described processing procedure comprises the steps:
A: first-class heat exchanger is set, plasticizing groove overflow water and plasticizing groove supplementing water are delivered in first-class heat exchanger respectively and carry out heat exchange process, after heat exchange process, the plasticizing groove of acquisition supplements hot water and delivers to plasticizing groove, the plasticizing groove overflow water at low temperature obtained then delivers to secondary heat exchanger, the operation of completing steps B;
B: the doctor solution that desulfurization station uses is delivered in secondary heat exchanger, utilize the plasticizing groove overflow water at low temperature obtained in steps A to carry out heat exchange process to it, after heat exchange process, desulfurization station delivered to by doctor solution, plasticizing groove overflow water at low temperature then delivers to three grades of heat exchangers, the operation of completing steps C;
C: delivered to by packing cooling water in three grades of heat exchangers, utilizes the plasticizing groove overflow water at low temperature in step B after heat exchange to carry out heat exchange process to it, after heat exchange process, obtain acid overflow water, deliver to sewage plant, packing cooling water then delivers to cutter machine, the operation of completing steps D;
D: described packing cooling water is delivered to after refiner uses by cutter machine, obtains and rushes hair water, the described mao water that rushes is back to cutter machine or delivers to plasticizing groove and supplements water pot and be used as plasticizing groove supplementing water and use.
3. a kind of waste water heat energy utilization method being applicable to short rayon fiber industry according to claim 2, it is characterized in that: on described plasticizing groove, be communicated with feeder, and two subregions are set in this feeder internal insulation, described subregion is respectively the high-temperature region of collecting plasticizing groove overflow water and the low-temperature space collecting the plasticizing groove overflow water at low temperature after first-class heat exchanger heat exchange.
4. a kind of waste water heat energy utilization method being applicable to short rayon fiber industry according to claim 2, is characterized in that: supplement on water pot at described plasticizing groove and be also connected with multiple-effect water pot, and described multiple-effect water pot is the collecting tank taking up acid station multiple-effect water.
5. a kind of waste water heat energy utilization method being applicable to short rayon fiber industry according to claim 2, it is characterized in that: in described steps A, before first-class heat exchanger heat exchange process, the temperature of described plasticizing groove overflow water is 90 ~ 95 DEG C, the temperature of described plasticizing groove supplementing water is 60 ~ 65 DEG C, after first-class heat exchanger heat exchange process, the temperature of plasticizing groove overflow water at low temperature is 75 ~ 80 DEG C, and the temperature that plasticizing groove supplements hot water is 75 ~ 80 DEG C;
In described step B, before secondary heat exchanger heat exchange process, the temperature of described doctor solution is 55 ~ 60 DEG C, and after secondary heat exchanger heat exchange process, the temperature of doctor solution is 65 ~ 70 DEG C, and the temperature of plasticizing groove overflow water at low temperature is 70 ~ 80 DEG C;
In described step C, before three grades of heat exchanger heat exchange processors, the temperature of described packing cooling water is 10 ~ 20 DEG C, and after three grades of heat exchanger heat exchange processors, the temperature of packing cooling water is 45 ~ 50 DEG C, and the temperature of acid overflow water is 50 ~ 60 DEG C.
6. the heat energy comprehensive cyclic utilization method being applicable to short rayon fiber waste water according to any one of Claims 1 to 5, is characterized in that: described spent hot water also comprises refining sewer and refining overflow hot water, and described heat exchange process also comprises the steps:
A: refined water heat exchanger and refining heat water-to-water heat exchanger are set, respectively refining sewer and production soft water are delivered to refined water heat exchanger and carry out heat exchange process, after heat exchange process, refining sewer delivers to sewage plant, produce soft water and then deliver to refining heat water-to-water heat exchanger, the operation of completing steps b;
B: deliver in refining heat water-to-water heat exchanger by refining overflow hot water, carries out heat exchange process to the production soft water after heat exchange in step a, and after heat exchange process, the production soft water of acquisition sends into system soft water, and refining overflow hot water then delivers to sewage plant.
7. the heat energy comprehensive cyclic utilization method being applicable to short rayon fiber waste water according to claim 6, it is characterized in that: in described step a, before refined water heat exchanger heat exchange process, the temperature of described refining sewer is 55 ~ 60 DEG C, the temperature of described production soft water is 10 ~ 20 DEG C, after refined water heat exchanger heat exchange process, the temperature of refining sewer is 35 ~ 40 DEG C, and the temperature of producing soft water is 30 ~ 35 DEG C;
In described step b, before refining heat water-to-water heat exchanger heat exchange process, the temperature of described refining overflow hot water is 55 ~ 60 DEG C, after refining heat water-to-water heat exchanger heat exchange process, the temperature of refining overflow hot water is 35 ~ 40 DEG C, and the temperature of producing soft water is 35 ~ 40 DEG C.
8. the heat energy comprehensive cyclic utilization method being applicable to short rayon fiber waste water according to any one of Claims 1 to 5, it is characterized in that: described spent hot water also comprises pre-cold water, described heat exchange process also comprises: arrange pre-cold-water heat exchanger, respectively pre-cold water and refiner bleaching liquid are delivered to pre-cold-water heat exchanger and carry out heat exchange process, after heat exchange process, pre-cold water delivers to refiner scrubbing section, and refiner bleaching district then delivered to by refiner bleaching liquid.
9. the heat energy comprehensive cyclic utilization method being applicable to short rayon fiber waste water according to claim 8, it is characterized in that: before pre-cold-water heat exchanger process, the temperature of described pre-cold water is 80 ~ 85 DEG C, the temperature of described refiner bleaching liquid is 50 ~ 55 DEG C, after pre-cold-water heat exchanger process, the temperature of pre-cold water is 65 ~ 70 DEG C, and the temperature of refiner bleaching liquid is 56 ~ 60 DEG C.
10. the heat energy comprehensive cyclic utilization method being applicable to short rayon fiber waste water according to any one of Claims 1 to 5, it is characterized in that: described spent hot water also comprises drying condensation water, described heat exchange process also comprises: arrange condensed water heat exchanger, after drying condensation water is delivered to finish chuck, deliver to condensed water heat exchanger again, heat exchange process is carried out to the finish body lotion delivering to condensed water heat exchanger, after heat exchange process, drying condensation water delivers to refiner scrubbing section, and system petrol station then delivered to by finish body lotion.
The 11. heat energy comprehensive cyclic utilization methods being applicable to short rayon fiber waste water according to claim 10, it is characterized in that: before the process of condensed water heat exchanger, the temperature of described drying condensation water is 85 ~ 90 DEG C, the temperature of described finish body lotion is 50 ~ 53 DEG C, after the process of condensed water heat exchanger, the temperature of drying condensation water is 65 ~ 75 DEG C, and the temperature of finish body lotion is 60 ~ 65 DEG C.
CN201410556295.0A 2014-10-20 2014-10-20 Waste water heat energy utilization method suitable for viscose staple fiber industry Expired - Fee Related CN104264255B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105420830A (en) * 2015-12-11 2016-03-23 宜宾丝丽雅股份有限公司 Spinning wash bowl waste water utilization system
CN107383209A (en) * 2017-08-30 2017-11-24 宜宾丝丽雅集团有限公司 Ageing process water circulating equipment in viscose fiber production
CN108150998A (en) * 2017-12-22 2018-06-12 芜湖德司节能科技有限公司 A kind of boiler blowdown water heat energy utilization method
CN110885084A (en) * 2019-12-11 2020-03-17 宜宾丝丽雅股份有限公司 Condensation recycling method and system for carbon disulfide in viscose fiber production

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB212865A (en) * 1923-03-15 1924-12-02 Leon Lilienfeld Process for the production of viscose
CN1815122A (en) * 2006-02-28 2006-08-09 南京科环地源热泵科技有限公司 Industrial waste water (liquid) residual neat recovering system
CN103864260A (en) * 2012-12-13 2014-06-18 高松 Method for processing viscose fiber production wastewater
CN104058539A (en) * 2014-07-07 2014-09-24 成都丽雅纤维股份有限公司 Semi-fiber treatment process based on industrial waste water of viscose

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB212865A (en) * 1923-03-15 1924-12-02 Leon Lilienfeld Process for the production of viscose
CN1815122A (en) * 2006-02-28 2006-08-09 南京科环地源热泵科技有限公司 Industrial waste water (liquid) residual neat recovering system
CN103864260A (en) * 2012-12-13 2014-06-18 高松 Method for processing viscose fiber production wastewater
CN104058539A (en) * 2014-07-07 2014-09-24 成都丽雅纤维股份有限公司 Semi-fiber treatment process based on industrial waste water of viscose

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
冯涛: "高温废水的热能利用", 《人造纤维》, no. 5, 31 October 2010 (2010-10-31) *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105420830A (en) * 2015-12-11 2016-03-23 宜宾丝丽雅股份有限公司 Spinning wash bowl waste water utilization system
CN107383209A (en) * 2017-08-30 2017-11-24 宜宾丝丽雅集团有限公司 Ageing process water circulating equipment in viscose fiber production
CN107383209B (en) * 2017-08-30 2023-07-25 宜宾丝丽雅集团有限公司 Water circulation equipment for ageing procedure in viscose fiber production
CN108150998A (en) * 2017-12-22 2018-06-12 芜湖德司节能科技有限公司 A kind of boiler blowdown water heat energy utilization method
CN110885084A (en) * 2019-12-11 2020-03-17 宜宾丝丽雅股份有限公司 Condensation recycling method and system for carbon disulfide in viscose fiber production

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