CN218861098U - System for alkali recovery - Google Patents
System for alkali recovery Download PDFInfo
- Publication number
- CN218861098U CN218861098U CN202222976663.XU CN202222976663U CN218861098U CN 218861098 U CN218861098 U CN 218861098U CN 202222976663 U CN202222976663 U CN 202222976663U CN 218861098 U CN218861098 U CN 218861098U
- Authority
- CN
- China
- Prior art keywords
- alkali
- tank
- multistage
- desizing
- stage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
Abstract
The utility model discloses a system for alkali is retrieved, including multistage alkali wash groove, multistage alkali wash groove is used for the substep to wash with alkaline desizing and alkali decrement, multistage alkali wash groove is including the multistage alkali wash groove that is used for washing with alkaline the desizing that separately sets up and the multistage alkali wash groove that is used for alkali decrement. After the multistage alkaline washing tank for alkaline washing desizing and the multistage alkaline washing tank for alkaline decrement are separately and independently arranged, the alkaline washing desizing and the alkaline decrement are realized step by step, namely alkaline washing desizing is firstly completed, and then the alkaline decrement is carried out, so that most of alkaline solution is only used as a desizing medium in the desizing link, the alkaline solution can be recycled in the production process, only a proper amount of alkaline solution needs to be added in the alkaline decrement link according to production requirements and product requirements, 60-70% of production alkaline in the original production process can be saved, the use amount of clear water is reduced in the subsequent alkaline washing and water removal link, and the treatment amount of sewage is finally and effectively reduced.
Description
Technical Field
The utility model relates to a printing and dyeing pretreatment field, in particular to a system for alkali is retrieved.
Background
As shown in the attached figure 1 of the specification, the conventional dyeing pretreatment process usually adopts integrated treatment of alkali washing desizing and alkali decrement, namely, the cloth sequentially enters a multi-stage alkali washing tank to simultaneously carry out alkali washing desizing and alkali decrement, and then sequentially enters a multi-stage water washing tank to carry out water washing desizing and water washing cloth alkali removal, and the alkali waste water in the alkali washing tank cannot be recycled.
In the dyeing process of chemical fiber cloth, the functions of alkali washing desizing and alkali decrement are generally finished synchronously by adopting a long vehicle. The method has the advantages of simple process and low water consumption; the method has the defects that the alkali consumption is huge, and the alkali solution used for the alkali decrement function is consumed by the desizing function, so that a large amount of alkali solution is additionally consumed, and consequently, a large amount of sewage containing desizing water is generated due to alkali removal of water-washed cloth, so that on one hand, the alkali consumption is large, on the other hand, the sewage amount to be treated is large, and the dyeing and printing pretreatment process needs to spend a large amount of cost on purchasing the alkali solution and treating the sewage, thereby not being beneficial to protecting the ecological environment, and also being in line with the national energy-saving and emission-reducing targets.
Therefore, it is very important to provide an alkali recovery system which can simultaneously solve the problems of large alkali consumption and large sewage treatment capacity.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a system for alkali recovery, which aims to solve the problems of alkali consumption and large sewage treatment capacity of the prior printing and dyeing pretreatment process.
In order to solve the problem, the utility model provides a system for alkali recovery, including multistage alkali wash groove, multistage alkali wash groove is used for the substep to wash with alkaline desizing and alkali decrement, multistage alkali wash groove is including the multistage alkali wash groove that is used for washing with alkaline the desizing that separately sets up and the multistage alkali wash groove that is used for alkali decrement.
The system for recovering alkali of the utility model also comprises a multi-stage rinsing bath which comprises a front-section multi-stage rinsing bath and a rear-section multi-stage rinsing bath.
In some embodiments, the waste alkali solution and desizing water of the front-stage multi-stage washing tank and the desizing water and sewage of the rear-stage multi-stage washing tank are separately discharged.
In some embodiments, the front-stage multistage water washing tank is partially or completely a multistage water washing tank for water washing and desizing, and the rear-stage multistage water washing tank is partially or completely a multistage water washing tank for water washing and alkali removal.
In some embodiments, the system for alkali recovery further comprises a waste alkali collecting tank, an alkali recovery device and an automatic alkali distribution tank which are sequentially connected;
the waste alkali collecting tank is communicated with the multistage alkali washing tank and the multistage rinsing tank and is used for collecting waste alkali solution discharged from the multistage alkali washing tank and the multistage rinsing tank;
the alkali recovery device is used for recovering and purifying the waste alkali solution collected by the waste alkali collecting tank and preparing clean new alkali liquor;
the automatic alkali distribution tank is used for obtaining new alkali liquor prepared by the alkali recovery device and preparing alkali liquor with the concentration required by the multi-stage alkali washing tank.
In some embodiments, the alkali waste solution and the desizing water of the front-stage multi-stage rinsing tank enter the alkali waste collecting tank, and the desizing water and the sewage of the rear-stage multi-stage rinsing tank enter the wastewater collecting tank.
In some embodiments, the multiple alkaline washing tanks for alkaline washing desizing are arranged in parallel, the multiple alkaline washing tanks for alkaline decrement are connected in series, and the liquid flow direction is opposite to the cloth transfer direction.
In some embodiments, the multiple wash tanks are in series and the liquid flow direction is opposite to the cloth transfer direction.
In some embodiments, the multistage washing tanks for water washing desizing are connected in series and have the liquid flow direction opposite to the cloth transferring direction, and the multistage washing tanks for water washing to remove alkali are connected in series and have the liquid flow direction opposite to the cloth transferring direction.
In one embodiment, the system for recovering alkali further comprises a first spraying device, and the alkali liquor prepared by the automatic alkali preparation tank is sprayed onto the cloth in the multistage alkali washing tank by the first spraying device.
In one embodiment, the system for recovering alkali further comprises a second spraying device, and the clean water is sprayed onto the cloth in the multi-stage water washing tank by the second spraying device.
Has the advantages that: the utility model discloses a separately set up the multistage alkali wash groove that is used for alkaline washing desizing and the multistage alkali wash groove that is used for alkali decrement, make the alkaline washing desizing and the alkali decrement of current one step completion respectively in the multistage alkali wash groove that is used for alkaline washing desizing and the multistage alkali wash groove that is used for alkali decrement in step completion, accomplish the alkaline washing desizing promptly earlier, alkali decrement again, most alkali solution only is as the desizing media in the desizing link like this, can cyclic utilization in the in-process of production, only need add proper amount alkali solution according to production needs and product requirement in alkali decrement link, thereby can practice thrift 60-70% alkali for production in the original production technology, remove the alkali link in follow-up water and will reduce the clear water use amount, thereby finally effectively reduce the handling capacity of sewage.
Therefore, the system for recovering alkali can solve the problems of alkali consumption and large sewage treatment capacity simultaneously.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of a conventional pre-treatment process for printing and dyeing;
FIG. 2 is a flow chart of the pre-treatment process of the printing and dyeing of the present invention;
FIG. 3 is a flow chart of a pre-printing treatment process according to one embodiment of the present invention;
FIG. 4 is a flow chart of a pre-printing treatment process in another embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front and rear \8230;) are involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship between the components in a specific posture (as shown in the attached drawings), the motion situation, etc., and if the specific posture is changed, the directional indications are changed accordingly.
In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B", including either A or B or both A and B. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a system for alkali recovery, including multistage alkali wash tank and multistage wash bowl, through separately setting up the multistage alkali wash tank that is used for alkali wash desizing and the multistage alkali wash tank that is used for alkali decrement, make the present alkali wash desizing and alkali decrement of one-step completion in step respectively be used for alkali wash desizing multistage alkali wash tank and be used for alkali decrement multistage alkali wash tank in step completion, accomplish alkali wash desizing earlier promptly, alkali decrement again, most alkali solution only is regarded as the desizing media in the desizing link like this, can cyclic utilization in the in-process of production, only need add appropriate amount alkali solution according to production needs and product requirement in alkali decrement link, thereby can practice thrift 60-70% alkali for production in the original production technology, it will reduce the use amount to make the quantity to distribute alkali link in follow-up water washing, thereby finally effectively reduce the handling capacity of sewage.
Simultaneously with the alkali waste solution of multistage alkali wash bowl and multistage rinsing bath decontaminate through alkali recovery unit and purify and become clean alkali solution and can recycle, to the desizing, the saving of the required alkali lye of alkali decrement is more, guarantee effect to product quality is better, through purifying into clean alkali lye with the alkali waste, make it to become better raw materials for production, more be favorable to manufacturing enterprise to dispose required concentration according to the product demand, reach the effect of sparingly using alkali when guaranteeing the product quality.
The utility model discloses most alkali lye has all been retrieved in the sewage of emission, has also reduced sewage treatment's the degree of difficulty and cost, and the alkali waste purifies and changes for a short time original production facility, has the promotion to the sewage treatment effect, whole cost reduction increase.
In addition, the matched automatic alkali preparation tank can more accurately and quickly prepare alkali liquor with required concentration, the matched spray pump can enhance the desizing, alkali decrement and water washing effects, the soaking effect is better than that of the traditional soaking effect, thereby achieving the effect of saving alkali,
the system for soda recovery of the present invention is described in detail below by way of several examples.
The first embodiment is as follows:
in this example, as shown in fig. 2, the system for alkali recovery includes a multistage alkali wash tank and a multistage water wash tank. The multistage alkaline washing tank comprises a multistage alkaline washing tank and a multistage alkaline washing tank, wherein the multistage alkaline washing tank is used for alkaline washing desizing and the multistage alkaline washing tank is used for alkali decrement.
The multistage alkaline washing tank for alkaline washing desizing and the multistage alkaline washing tank for alkaline decrement are separately and independently arranged, so that the process steps of alkaline washing desizing and alkaline decrement realized in one step in the prior art shown in figure 1 are divided into two steps, the alkaline washing desizing is firstly completed, then the alkaline decrement is performed, and then the water is washed to remove the alkali. The method has the advantages that most of the alkali solution is only used as a desizing medium in the desizing link, the alkali solution can be recycled in the process of the printing and dyeing pretreatment process, and only a proper amount of alkali solution needs to be added in the alkali reduction link according to production requirements and product requirements, so that 60-70% of the production alkali in the original printing and dyeing pretreatment process can be saved, the use amount of clear water can be reduced in the subsequent alkali removing link of the washed cloth, the amount of sewage to be treated is reduced, the purchasing cost of the alkali solution and the treatment cost of the sewage are both remarkably reduced, and the cost reduction and the efficiency improvement of the printing and dyeing pretreatment process are effectively promoted.
The utility model discloses a system for alkali recovery still includes and sets gradually useless alkali collecting pit, alkali recovery unit and the automatic alkali groove of joining in marriage on the transfer line according to the liquid flow direction, for making liquid flow according to setting for the direction smoothly in the transfer line, is equipped with the transfer pump on the transfer line usually to drive liquid flow according to setting for the direction smoothly in the transfer line, common transfer pump has the elevator pump.
In this embodiment, as shown in fig. 2, the waste alkali collecting tank is communicated with the multistage alkaline washing tank and the multistage rinsing tank, and is configured to collect waste liquids flowing out of the multistage alkaline washing tank and the multistage rinsing tank, the alkali content in the waste liquids flowing out of the multistage alkaline washing tank and the multistage rinsing tank is high, and the waste liquids can be recovered to prepare pure new alkali liquids for recycling in the pre-treatment process of printing and dyeing.
Further, in the present embodiment, as shown in fig. 2, the multistage rinsing bath includes a front-stage multistage rinsing bath and a rear-stage multistage rinsing bath. And the waste alkali solution and desizing water of the front-stage multi-stage rinsing bath and the desizing water and sewage of the rear-stage multi-stage rinsing bath are separately discharged. The front-section multistage rinsing baths are all multistage rinsing baths for rinsing and desizing, and the rear-section multistage rinsing baths are all multistage rinsing baths for rinsing cloth and removing alkali. When the washing desizing and the washing cloth remove alkali and respectively independently adopt corresponding multistage washing tanks, only the waste liquid (including alkali waste solution and desizing water) flowing out of the multistage washing tanks for washing desizing is sent into the alkali waste collecting tank, the alkali content in the waste liquid (including desizing water and sewage) flowing out of the multistage washing tanks for washing cloth removing alkali is less, the necessity of recovery and purification treatment is avoided, and the part of waste liquid can be directly sent into the waste water collecting tank for sewage treatment. Of course, in other embodiments, as shown in fig. 3, when the concentration of the alkali solution in the alkali washing desizing is low, it is sufficient that the water washing desizing and the water washing cloth share one set of multi-stage washing tank for removing alkali, and at this time, the wastewater flowing out from the multi-stage washing tank is directly sent to the waste alkali collecting tank.
In this embodiment, as shown in fig. 2, the alkali recovery device is configured to recover and purify the waste alkali solution collected by the waste alkali collection tank to obtain clean new alkali solution for recycling in the pre-printing and dyeing treatment process, so as to greatly reduce the alkali consumption, and since the waste alkali solution is recovered, the amount of sewage to be treated is also reduced, the procurement cost of the alkali solution and the treatment cost of the sewage are both significantly reduced, and cost reduction and efficiency improvement of the pre-printing and dyeing treatment process are effectively promoted.
In this embodiment, as shown in fig. 2, the automatic alkali preparation tank is used for obtaining the new alkali liquor prepared by the alkali recovery device and preparing the new alkali liquor prepared by recovery into the alkali liquor with the concentration required by the multi-stage alkali washing tank, so that the alkali liquor consumption in the pre-printing and dyeing treatment process is greatly reduced, the procurement cost of the alkali liquor is greatly reduced, and the cost reduction and the efficiency improvement of the pre-printing and dyeing treatment process are effectively promoted.
In this embodiment, as shown in fig. 2, when the new alkali liquor prepared by the alkali recovery device is used to prepare the alkali liquor with the concentration required by the adaptive multistage alkali washing tank, the new alkali liquor needs to be prepared and mixed uniformly by using a metering pump and a circulating pump, and when the concentration of the new alkali liquor prepared by the alkali recovery device is low and is not enough to prepare the alkali liquor with the concentration required by the adaptive multistage alkali washing tank, fresh alkali needs to be additionally supplemented to ensure that the alkali liquor with the concentration required by the adaptive multistage alkali washing tank is accurately and timely prepared.
In this embodiment, as shown in fig. 2, when the alkaline washing desizing and the alkaline decrement are separately and independently performed by using corresponding multiple alkaline washing tanks, two sets of automatic alkaline distribution tanks are also required to be provided, one set of automatic alkaline distribution tank prepares the alkaline solution for the alkaline washing desizing, and the other set of automatic alkaline distribution tank prepares the alkaline solution for the alkaline decrement.
In other embodiments, as shown in fig. 4, the alkaline washing desizing can be designed to adopt a set of multi-stage alkaline washing grooves comprising two alkaline washing grooves according to different textile printing and dyeing products; the alkali decrement adopts a set of multistage alkali concentration tank, including three alkali concentration tanks, to ensure the alkali decrement quality of the product, and it needs to be explained that, in order to show the specific structure of the multistage alkali concentration tank and the multistage alkali concentration tank in detail in fig. 4, a drawing method of omitting a waste alkali collecting tank and an automatic alkali distribution tank is adopted.
In the embodiment shown in fig. 2, the multistage rinsing tanks for water washing and desizing and the multistage rinsing tanks for rinsing cloth alkali removal are separately and independently arranged, waste liquid flowing out of the multistage rinsing tanks for water washing and desizing enters the waste alkali collecting tank, and waste liquid flowing out of the multistage rinsing tanks for rinsing cloth alkali removal enters the waste water collecting tank.
In this embodiment, as shown in fig. 2, the system for alkali recovery further includes a first spraying device, and the alkali liquor prepared by the automatic alkali preparation tank is sprayed onto the cloth in the multistage alkali washing tank by the first spraying device, so that the desizing effect is improved, the alkali washing desizing and alkali decrement are better than those of the traditional soaking effect, the alkali consumption is further saved, and the cost reduction and the efficiency improvement of the printing and dyeing pretreatment process are further promoted.
Furthermore, in this embodiment, as shown in fig. 2, the system for alkali recovery further includes a second spraying device, and clean water is sprayed onto the cloth in the multistage rinsing bath by the second spraying device, so that the design not only enhances the effects of washing and desizing and rinsing the cloth to remove alkali, but also saves water consumption, and further promotes cost reduction and efficiency improvement of the printing and dyeing pretreatment process.
In this embodiment, as shown in fig. 2, the number of stages of the multistage alkaline washing tank and the multistage rinsing tank can be flexibly set according to the fabric of the printing and dyeing pretreatment process, for example, as shown in fig. 3, the concentration of alkaline liquid required for fabric alkaline washing desizing and alkaline reduction treatment is low, so that subsequent water washing desizing and rinsing fabric alkali removal can share one set of three-stage rinsing tank, thereby not only reducing equipment investment, but also reducing water consumption, and effectively promoting cost reduction and efficiency improvement of the printing and dyeing pretreatment process; as shown in fig. 4, the concentration of alkali liquor required for the alkali washing and desizing and alkali reduction treatment of the cloth is relatively high, so that the cloth can be subjected to good alkali reduction treatment by adopting a three-stage concentrated alkali tank instead of a multi-stage alkali washing tank, and a set of two-stage washing tanks is independently adopted for subsequent alkali washing and desizing and water washing and cloth alkali removal.
In the embodiment shown in fig. 3, the multiple alkaline washing tanks for alkaline washing and desizing are arranged in parallel, the multiple alkaline washing tanks for alkali reduction are connected in series, and the liquid flowing direction is opposite to the cloth transferring direction. And the multistage washing tanks are connected in series, the liquid flowing direction is opposite to the cloth transferring direction, and compared with a set of multistage washing tanks for desizing and washing cloth alkali removal, the design of sequentially connecting in series is also beneficial to more fully removing alkali from desizing and washing cloth.
In the embodiment shown in fig. 4, the multistage washing tanks for water washing and desizing are connected in series, the liquid flowing direction is opposite to the cloth transferring direction, and the multistage washing tanks for water washing and alkali removal are connected in series, the liquid flowing direction is opposite to the cloth transferring direction, so that two independent liquid series connection circulation modes are formed, mutual noninterference is realized, and the step-by-step water washing and desizing and alkali removal of water washing cloth can be realized.
Example two:
the embodiment discloses a method for recovering alkali, which comprises the following steps:
s1, obtaining waste alkali solution flowing out of a multi-stage alkali washing tank and a multi-stage water washing tank, wherein when the multi-stage water washing tank is provided with two sets, one set is used for washing and desizing, and the other set is used for removing alkali from water washing cloth, waste liquid flowing out of the multi-stage water washing tank for washing and desizing enters a waste alkali collecting tank, and waste liquid flowing out of the multi-stage water washing tank for washing and removing alkali enters a waste water collecting tank;
s2, purifying the waste alkali solution to prepare clean new alkali solution, so that the purchasing cost of the alkali solution and the treatment cost of sewage can be obviously reduced, the cost reduction and the efficiency improvement of the printing and dyeing pretreatment process are effectively promoted, and in addition, the wastewater generated in the process of treating the waste alkali solution is sent to a wastewater collection tank for sewage centralized treatment;
s3, preparing the alkali liquor with the concentration required by the adaptive multistage alkali washing tank by using clean new alkali liquor, wherein a metering pump and a circulating pump are required in the preparation process to accurately prepare the alkali liquor with the concentration required by the adaptive multistage alkali washing tank, and when the prepared new alkali liquor is low in concentration and is not enough to prepare the alkali liquor with the concentration required by the adaptive multistage alkali washing tank, additionally supplementing fresh alkali is required to ensure that the alkali liquor with the concentration required by the adaptive multistage alkali washing tank is accurately and timely prepared;
and S4, adding the prepared alkali liquor into a multi-stage alkali washing tank, so that the recycling of the waste alkali liquor is realized, and because the waste liquor generated by the multi-stage alkali washing tank is subjected to alkali recovery treatment, only part of sewage generated by the multi-stage water washing tank is sent to a sewage treatment station for centralized treatment, so that the sewage treatment capacity is remarkably reduced, and the recovered alkali can completely or partially replace fresh alkali liquor, so that the alkali consumption is remarkably reduced, the purchase cost of the alkali liquor and the treatment cost of the sewage are remarkably reduced, and the cost reduction and the efficiency improvement of the printing and dyeing pretreatment process are effectively promoted.
In this embodiment, when the alkaline washing desizing and the alkaline decrement are separately and independently performed by using one set of multi-stage alkaline washing tank in step S4, the prepared alkaline solution needs to be added into two sets of multi-stage alkaline washing tanks respectively.
In the embodiment, the prepared alkali liquor is uniformly sprayed onto the cloth in the multistage alkali washing tank, so that the desizing effect is improved, the alkali washing desizing and alkali decrement effects are better than those of the traditional soaking effect, the alkali consumption is further saved, and the cost reduction and the efficiency improvement of the printing and dyeing pretreatment process are further promoted.
In this embodiment, multistage wash bowl is including the multistage wash bowl that is used for washing desizing and the multistage wash bowl that is used for washing cloth to remove alkali, the waste liquid that the multistage wash bowl that is used for washing desizing flows gets into the alkali waste collecting tank, the waste liquid that the multistage wash bowl that is used for washing cloth to remove alkali flows gets into the waste water collecting tank, so design, can remove the waste liquid that alkali produced to washing desizing and washing cloth and carry out accurate classification, improve alkali waste recovery and sewage treatment efficiency, because alkali waste concentration is higher in the waste liquid that washing desizing produced, has the value of retrieving alkali lye, and alkali waste concentration is lower in the waste liquid that washing cloth removes alkali production, do not have the necessity of retrieving alkali lye, consequently, washing desizing and washing cloth alkali removal separate, one set of multistage wash bowl of independent adoption each other can carry out accurate classification with the waste liquid that washing desizing and washing cloth produced, alkali recovery and sewage treatment efficiency have been improved, alkali recovery and sewage treatment cost descend thereupon, effectively promoted printing and dyeing process cost reduction benefit.
In this embodiment, step S2, the waste alkali solution and the desizing water are recycled by the alkali recycling device to obtain pure new alkali solution, so as to realize recycling of the alkali solution, thereby reducing consumption of a large amount of alkali solution; the waste alkali solution and the desizing water at the front section of the multi-stage rinsing bath and the desizing water and sewage at the rear section are separately discharged and treated, so that the problem that the sewage is mixed with a large amount of desizing water to increase the sewage treatment difficulty is avoided. Therefore, the dyeing pretreatment process of the embodiment can greatly reduce the procurement cost of the alkali solution and the treatment cost of the sewage.
The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.
Claims (10)
1. The system for alkali recovery comprises a multi-stage alkali washing tank and is characterized in that the multi-stage alkali washing tank is used for carrying out alkali washing desizing and alkali decrement step by step, and the multi-stage alkali washing tank comprises a multi-stage alkali washing tank for alkali washing desizing and a multi-stage alkali washing tank for alkali decrement which are separately arranged.
2. The system for soda recovery as claimed in claim 1, further comprising a multi-stage wash tank including a front stage multi-stage wash tank and a back stage multi-stage wash tank.
3. The system for soda recovery as claimed in claim 2, wherein the spent caustic solution, desizing water of the front-stage multistage washing tank and desizing water and sewage of the rear-stage multistage washing tank are separately discharged.
4. The system for soda recovery as claimed in claim 3, wherein the front-stage multistage water washing tank is partially or entirely a multistage water washing tank for water washing desizing, and the rear-stage multistage water washing tank is partially or entirely a multistage water washing tank for water washing to remove soda.
5. The system for soda recovery as claimed in claim 4, further comprising a spent soda collecting tank, a soda recovery unit, and an automatic soda blending tank, which are connected in sequence;
the waste alkali collecting pool is communicated with the multistage alkali washing tank and the multistage rinsing tank and is used for collecting waste alkali solution discharged from the multistage alkali washing tank and the multistage rinsing tank;
the alkali recovery device is used for recovering and purifying the waste alkali solution collected by the waste alkali collecting tank and preparing clean new alkali liquor;
the automatic alkali distribution tank is used for obtaining new alkali liquor prepared by the alkali recovery device and preparing alkali liquor with the concentration required by the multi-stage alkali washing tank.
6. The system for soda recovery as claimed in claim 5, wherein the spent caustic solution and the desizing water of the front-stage multi-stage rinsing tank enter the spent caustic collecting tank, and the desizing water and the sewage of the rear-stage multi-stage rinsing tank enter the wastewater collecting tank.
7. The system for caustic recovery of claim 1, wherein the multiple caustic wash tanks for caustic wash desizing are arranged in parallel, the multiple caustic wash tanks for caustic reduction are connected in series and the liquid flow direction is opposite to the cloth transfer direction.
8. The system for soda recovery as claimed in claim 2, wherein the plurality of stages of washing tanks are connected in series and the liquid flow direction is opposite to the cloth transfer direction.
9. The system for soda recovery as claimed in claim 4, wherein the multistage rinsing baths for water washing and desizing are connected in series with a liquid flow direction opposite to the cloth transfer direction, and the multistage rinsing baths for water washing and alkali removal are connected in series with a liquid flow direction opposite to the cloth transfer direction.
10. The system for soda recovery as claimed in claim 5, wherein the system for soda recovery further comprises a first spraying device, the alkali liquor prepared by the automatic soda tank is sprayed onto the cloth in the multistage soda tank by the first spraying device; the system for recovering alkali also comprises a second spraying device, and clean water is sprayed onto the cloth in the multi-stage rinsing bath by the second spraying device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222976663.XU CN218861098U (en) | 2022-11-09 | 2022-11-09 | System for alkali recovery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222976663.XU CN218861098U (en) | 2022-11-09 | 2022-11-09 | System for alkali recovery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218861098U true CN218861098U (en) | 2023-04-14 |
Family
ID=87366980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222976663.XU Active CN218861098U (en) | 2022-11-09 | 2022-11-09 | System for alkali recovery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218861098U (en) |
-
2022
- 2022-11-09 CN CN202222976663.XU patent/CN218861098U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101230480B (en) | Electroplating reverse-flow rinsing process | |
| CN218861098U (en) | System for alkali recovery | |
| CN107419555A (en) | Polyester fabric One Bath Dyeing Process | |
| CN205062185U (en) | Alkaline etching waste liquid resource recycling processing apparatus | |
| CN103952751A (en) | Device for recycling electro-plating spraying cleaning liquid | |
| CN218596135U (en) | Alkali recovery system | |
| CN216737830U (en) | Nickel recovery processing system of nickeliferous waste water | |
| CN101748576A (en) | Waste water recycling pad dyeing long machine and waste water recycling method thereof | |
| CN115611297A (en) | Alkali recovery system and recovery method | |
| CN104529003B (en) | A kind of acid regeneration equipment | |
| CN207430807U (en) | A kind of water circulation utilization system of optical glass | |
| CN208949025U (en) | A kind of electroplating wastewater circulation recycling system | |
| CN107265750A (en) | A kind of cotton dyeing process spent water reclaiming system | |
| CN103601216A (en) | Device for recovering mixed alkaline liquid in indigo blue after-treating and washing processes | |
| CN105967408A (en) | Industrial wastewater treatment process of copper-based hydrogenation catalyst | |
| CN216513622U (en) | Pigment red 31 production system | |
| CN203545698U (en) | Device for recycling mixed alkali liquid in indigo blue post-treatment washing process | |
| CN217092454U (en) | Titanium dioxide film washing and filtering system capable of reducing water consumption of acidolysis section | |
| CN112725915B (en) | Tow washing device and tow washing method | |
| CN110272153A (en) | Printing and dyeing high-salt wastewater recycling and zero discharge device | |
| CN215480323U (en) | Nitric acid recycling system | |
| CN219730625U (en) | Treatment system for treating viscose filament acid-removal wastewater based on three-film combination method | |
| CN217809718U (en) | Cleaning line control system | |
| CN214270581U (en) | Regeneration and cyclic utilization system for special wastewater generated in textile pretreatment | |
| CN220845809U (en) | Water recycling system for washing rice, soaking rice and leaching |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |