Ammonia regeneration system
By designing an ammonia regeneration system and using multi-stage treatment and circulation heating technology, the ammonia water is regenerated into ultra-pure ammonia, which solves the problem of low ammonia utilization in the solar cell and LED industries, improves the economic benefits of recycling and reduces production cost.
Patent Information
- Application Number
- CN202420990516.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-08
- Publication Date
- 2025-01-17
- Estimated Expiration
- 2034-05-08
AI Technical Summary
The utilization rate of ultra-pure ammonia in the solar cell and LED industries is low, and the exhaust gas contains a large amount of ammonia and needs to be processed. The existing technology makes it into ammonia water but has low economic benefits. The cost of industrial ammonia raw materials is high, which increases production costs.
An ammonia regeneration system was designed, including a concentration tower, a heavy-weight de-light tower, a light-weight de-light tower, an ammonia water tank, a pure ammonia tank, a condenser and a reboiler. Through multi-stage treatment, the ammonia water is regenerated into ultra-pure ammonia, improving the recycling economy benefit.
Through multi-stage treatment and circulating heating, the device conversion efficiency is improved, the company's production costs are reduced, and the economic benefits of ammonia recovery are improved.
Smart Images
Figure CN222357976U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of ammonia utilization, and in particular to an ammonia regeneration system. Background Art
[0002] Ultrapure ammonia is required in the production process of solar cells and LEDs. The current mainstream industrial production process of ultrapure ammonia is to purify industrial ammonia through a distillation process.
[0003] The solar cell and LED industries consume a large amount of ultra-pure ammonia, but the utilization rate is low, and the tail gas contains a large amount of ammonia that needs to be treated. The utilization rate of pure ammonia in the solar cell and LED industries is low. More than 90% of the ultra-pure ammonia raw materials enter the tail gas absorption system for treatment. Although the existing technology can convert the ammonia in the tail gas into ammonia water, the price of ammonia water is low and the economic benefits of recycling are low. In addition, due to the large demand for ultra-pure ammonia in production and preparation, the existing factories use industrial ammonia for the production of ultra-pure ammonia. The raw material cost of industrial ammonia is high, which greatly increases the production cost of enterprises. Utility Model Content
[0004] In view of this, the present application proposes an ammonia regeneration system, which can recycle ammonia water, reprocess the ammonia water to generate ultra-pure ammonia, improve the economic benefits of recycling, and reduce the production costs of the enterprise.
[0005] According to one aspect of the present application, an ammonia regeneration system is provided, comprising: a concentration tower, a heavy removal tower, a light removal tower, an ammonia water tank, a pure ammonia tank, a condenser and a reboiler.
[0006] There are three condensers, namely the first condenser, the second condenser and the third condenser; there are three reboilers, namely the first reboiler, the second reboiler and the third reboiler; the outlet end of the ammonia water tank is connected to the first inlet of the concentrating tower by a pipeline, the concentrating tower and the first condenser are connected in a loop, and the concentrating tower and the first reboiler are connected in a loop; the gas phase outlet of the first condenser is connected to the first inlet of the de-weighting tower by a pipeline, the de-weighting tower and the second condenser are connected in a loop, the de-weighting tower and the second reboiler are connected in a loop, and the second outlet of the de-weighting tower is connected to the inlet end of the ammonia water tank by a pipeline; the gas phase outlet of the second condenser is connected to the first inlet of the light-removing tower by a pipeline, the light-removing tower and the third condenser are connected in a loop, the light-removing tower and the third reboiler are connected in a loop, and the second outlet of the light-removing tower is connected to the pure ammonia tank by a pipeline.
[0007] In one possible implementation, the first outlet of the concentrating tower is connected to the inlet end of the first condenser by a pipeline, and the liquid phase outlet of the first condenser is connected to the second inlet of the concentrating tower by a pipeline; the first outlet of the de-weighting tower is connected to the inlet end of the second condenser by a pipeline, and the liquid phase outlet of the second condenser is connected to the second inlet of the de-weighting tower by a pipeline; the first outlet of the de-lighting tower is connected to the inlet end of the third condenser by a pipeline, and the liquid phase outlet of the third condenser is connected to the second inlet of the de-lighting tower by a pipeline, and the gas phase outlet of the third condenser is suitable for connecting to the outside of the device.
[0008] In one possible implementation, the second outlet of the concentrator is connected to the inlet end of the first reboiler by a pipeline, and the outlet end of the first reboiler is connected to the third inlet of the concentrator by a pipeline; the second outlet of the weight removal tower is connected to the inlet end of the second reboiler by a pipeline, and the outlet end of the second reboiler is connected to the third inlet of the weight removal tower by a pipeline; the second outlet of the light removal tower is connected to the inlet end of the third reboiler by a pipeline, and the outlet end of the third reboiler is connected to the third inlet end of the light removal tower by a pipeline.
[0009] In one possible implementation, a cooler is provided between the aqueous ammonia tank and the concentrating tower, a pipeline is connected between the outlet end of the aqueous ammonia tank and the first inlet of the cooler, and a pipeline is connected between the first outlet of the cooler and the first inlet of the concentrating tower.
[0010] In a possible implementation, the second outlet of the concentration tower and the second inlet of the cooler are connected by a pipeline, and the second outlet of the cooler is suitable for being connected to the outside of the device.
[0011] In one possible implementation, a raw material pump is provided between the aqueous ammonia tank and the cooler, the outlet end of the aqueous ammonia tank is connected to the inlet end of the raw material pump by a pipeline, and the outlet end of the raw material pump is connected to the first inlet of the cooler by a pipeline.
[0012] In a possible implementation, an industrial ammonia storage tank is further included, and an outlet end of the industrial ammonia storage tank is connected to the fourth inlet of the concentration tower by a pipeline.
[0013] In one possible implementation, the first outlet of the concentrating tower is arranged at the top of the concentrating tower, and the second outlet of the concentrating tower is arranged at the bottom of the concentrating tower; the first inlet of the concentrating tower is arranged at the middle position of the concentrating tower, the setting height of the second inlet of the concentrating tower is higher than the setting height of the first inlet of the concentrating tower, the setting height of the third inlet of the concentrating tower is lower than the setting height of the first inlet of the concentrating tower, and the setting height of the fourth inlet of the concentrating tower is equal to the setting height of the third inlet of the concentrating tower.
[0014] In one possible implementation, the first outlet of the deweighting tower is arranged at the top of the deweighting tower, and the second outlet of the deweighting tower is arranged at the bottom of the deweighting tower; the setting height of the first inlet of the deweighting tower is lower than the setting height of the second inlet of the deweighting tower, and the setting height of the first inlet of the deweighting tower is equal to the setting height of the third inlet of the deweighting tower.
[0015] In one possible implementation, the first outlet of the de-lightening tower is arranged at the top of the de-lightening tower, and the second outlet of the de-lightening tower is arranged at the bottom of the de-lightening tower; the setting height of the first inlet of the de-lightening tower is higher than the setting height of the third inlet of the de-lightening tower, and the setting height of the first inlet of the de-lightening tower is equal to the setting height of the second inlet of the de-lightening tower.
[0016] The beneficial effects of the present application are as follows: the ammonia water is stored in the ammonia water tank and transmitted to the concentration tower through a pipeline. The concentration tower concentrates the ammonia water to the top of the tower, and the liquid phase after being treated by the first condenser is returned to the concentration tower. The high-concentration ammonia gas after being treated by the first condenser enters the de-weighting tower; the ammonia water in the kettle of the de-weighting tower is treated by the second condenser, and the liquid phase produced is returned to the ammonia water tank for further treatment, and the ammonia gas after de-weighting enters the light-removing tower; the non-condensable gas ammonia gas contained in the top of the light-removing tower is discharged to the outside of the device after passing through the condenser, and the liquid phase is returned to the light-removing tower for further treatment. The bottom of the light-removing tower is connected to a pure ammonia tank for collecting the output pure ammonia; in addition, the bottoms of the concentration tower, the de-weighting tower and the light-removing tower are respectively connected to the first reboiler, the second reboiler and the third reboiler for circulation, so as to provide heat for the bottom of the tower and improve the conversion efficiency of the device. According to an ammonia regeneration system of the present application, the ammonia water can be recycled and reused, and the ammonia water can be reprocessed to generate ultra-pure ammonia, thereby improving the economic benefits of recycling and reducing the production costs of enterprises.
[0017] Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the present application and, together with the description, serve to explain the principles of the present application.
[0019] Figure 1 A connection diagram of an ammonia regeneration system according to an embodiment of the present application is shown. DETAILED DESCRIPTION
[0020] Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.
[0021] Among them, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application or simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0023] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.
[0024] In addition, in order to better illustrate the present application, numerous specific details are given in the following specific embodiments. It should be understood by those skilled in the art that the present application can also be implemented without certain specific details. In some examples, methods, means, components and circuits well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.
[0025] like Figure 1 As shown, the ammonia regeneration system includes: a concentration tower 100, a heavy removal tower 200, a light removal tower 300, an ammonia water tank 400, a pure ammonia tank 500, a condenser and a reboiler.
[0026] There are three condensers, namely the first condenser 610, the second condenser 620 and the third condenser 630; there are three reboilers, namely the first reboiler 710, the second reboiler 720 and the third reboiler 730; the outlet of the ammonia water tank 400 is connected to the first inlet of the concentration tower 100 by a pipeline, the concentration tower 100 and the first condenser 610 are connected by a loop, and the concentration tower 100 and the first reboiler 710 are connected by a loop; the gas phase outlet of the first condenser 610 and the first inlet of the deweighting tower 200 are connected by a pipeline. The de-weighting tower 200 and the second condenser 620 are connected by pipeline, the de-weighting tower 200 and the second reboiler 720 are connected by loop, the second outlet of the de-weighting tower 200 and the inlet end of the ammonia water tank 400 are connected by pipeline; the gas phase outlet of the second condenser 620 and the first inlet of the light-removing tower 300 are connected by pipeline, the light-removing tower 300 and the third condenser 630 are connected by loop, the light-removing tower 300 and the third reboiler 730 are connected by loop, and the second outlet of the light-removing tower 300 and the pure ammonia tank 500 are connected by pipeline.
[0027] Ammonia water is stored in the ammonia water tank 400 , and the ammonia water is pumped into the cooler 900 through the raw material pump 410 . The ammonia water enters from a first inlet of the cooler 900 , and flows out from a first outlet of the cooler 900 to a first inlet of the concentration tower 100 .
[0028] The concentrating tower 100 uses structured packing to concentrate the ammonia water to the top of the concentrating tower 100. The ammonia water is discharged from the first outlet at the top of the concentrating tower 100, and the liquid phase after being treated by the first condenser 610 returns to the concentrating tower 100 through the second inlet, and the generated gas phase enters the de-weighting tower 200 through the first inlet of the de-weighting tower 200 for treatment. In addition, the bottom of the concentrating tower 100 is provided with a second outlet, and the second outlet of the concentrating tower 100 is connected to the first reboiler 710 through a loop, so that the ammonia water at the bottom of the concentrating tower 100 is always kept at a high temperature, thereby improving the reaction rate of the device; the second outlet of the concentrating tower 100 is also provided with a branch, which is connected to the second inlet of the cooler 900 by a pipeline, and is discharged outside the device through the second outlet of the cooler 900.
[0029] The de-weighting tower 200 uses structured packing to concentrate the ammonia water to the top of the tower. The ammonia water is discharged from the first outlet at the top of the de-weighting tower 200, and the liquid phase after being treated by the second condenser 620 returns to the de-weighting tower 200 through the second inlet, and the generated gas phase enters the de-weighting tower 300 through the first inlet of the de-weighting tower 300 for treatment. In addition, the bottom of the de-weighting tower 200 is provided with a second outlet, and the second outlet of the de-weighting tower 200 is connected to the second reboiler 720 through a loop, so that the ammonia water at the bottom of the de-weighting tower 200 is always kept at a high temperature, thereby improving the reaction rate of the device; the second outlet of the de-weighting tower 200 is also provided with a branch, which is connected to the pipeline between the ammonia water tank 400, so that the ammonia water returns to the raw material end.
[0030] The de-lightening tower 300 uses structured packing to concentrate the ammonia water to the top of the tower. The ammonia water is discharged from the first outlet at the top of the de-lightening tower 300, and the liquid phase after being treated by the third condenser 630 returns to the de-lightening tower 300 through the second inlet. The generated gas phase is discharged from the device and enters the next high-efficiency absorption system for treatment. In addition, a second outlet is provided at the bottom of the de-lightening tower 300. The second outlet of the de-lightening tower 300 and the third reboiler 730 are connected in a loop, so that the ammonia water at the bottom of the de-lightening tower 300 is always kept at a high temperature, thereby increasing the reaction rate in the de-lightening tower 300; the second outlet of the de-lightening tower 300 is also provided with a branch, which is connected to the pipeline between the pure ammonia tank 500, for extracting qualified 7N grade ultra-pure ammonia products.
[0031] The present application can reprocess aqueous ammonia to generate ultra-pure ammonia, but since the recovery rate will not reach 100%, the remaining ultra-pure ammonia demand can be obtained by purchasing industrial ammonia as raw material, storing it in the industrial ammonia storage tank 800, and generating ultra-pure ammonia through the present system, so that the enterprise does not need to purchase ultra-pure ammonia, which greatly reduces the production cost of the enterprise.
[0032] In one possible implementation, the first outlet of the concentration tower 100 is connected to the inlet end of the first condenser 610 by a pipeline, and the liquid phase outlet of the first condenser 610 is connected to the second inlet of the concentration tower 100 by a pipeline; the first outlet of the de-weighting tower 200 is connected to the inlet end of the second condenser 620 by a pipeline, and the liquid phase outlet of the second condenser 620 is connected to the second inlet of the de-weighting tower 200 by a pipeline; the first outlet of the de-lightening tower 300 is connected to the inlet end of the third condenser 630 by a pipeline, and the liquid phase outlet of the third condenser 630 is connected to the second inlet of the de-lightening tower 300 by a pipeline, and the gas phase outlet of the third condenser 630 is suitable for connecting to the outside of the device.
[0033] In one possible implementation, the second outlet of the concentrator 100 is connected by a pipeline to the inlet end of the first reboiler 710, and the outlet end of the first reboiler 710 is connected by a pipeline to the third inlet of the concentrator 100; the second outlet of the de-weighting tower 200 is connected by a pipeline to the inlet end of the second reboiler 720, and the outlet end of the second reboiler 720 is connected by a pipeline to the third inlet of the de-weighting tower 200; the second outlet of the de-lighting tower 300 is connected by a pipeline to the inlet end of the third reboiler 730, and the outlet end of the third reboiler 730 is connected by a pipeline to the third inlet end of the de-lighting tower 300.
[0034] In one possible implementation, a cooler 900 is provided between the aqueous ammonia tank 400 and the concentrating tower 100, a pipeline is connected between the outlet end of the aqueous ammonia tank 400 and the first inlet of the cooler 900, and a pipeline is connected between the first outlet of the cooler 900 and the first inlet of the concentrating tower 100.
[0035] In a possible implementation, the second outlet of the concentration tower 100 and the second inlet of the cooler 900 are connected by a pipeline, and the second outlet of the cooler 900 is suitable for being connected to the outside of the device.
[0036] In one possible implementation, a raw material pump 410 is provided between the ammonia water tank 400 and the cooler 900, a pipeline is connected between the outlet end of the ammonia water tank 400 and the inlet end of the raw material pump 410, and a pipeline is connected between the outlet end of the raw material pump 410 and the first inlet of the cooler 900.
[0037] In a possible implementation, an industrial ammonia storage tank 800 is further included, and an outlet end of the industrial ammonia storage tank 800 is connected to the fourth inlet of the concentration tower 100 by a pipeline.
[0038] In one possible implementation, the first outlet of the concentrating tower 100 is arranged at the top of the concentrating tower 100, and the second outlet of the concentrating tower 100 is arranged at the bottom of the concentrating tower 100; the first inlet of the concentrating tower 100 is arranged in the middle position of the concentrating tower 100, the setting height of the second inlet of the concentrating tower 100 is higher than the setting height of the first inlet of the concentrating tower 100, the setting height of the third inlet of the concentrating tower 100 is lower than the setting height of the first inlet of the concentrating tower 100, and the setting height of the fourth inlet of the concentrating tower 100 is equal to the setting height of the third inlet of the concentrating tower 100.
[0039] In one possible implementation, the first outlet of the deweighting tower 200 is set at the top of the deweighting tower 200, and the second outlet of the deweighting tower 200 is set at the bottom of the deweighting tower 200; the setting height of the first inlet of the deweighting tower 200 is lower than the setting height of the second inlet of the deweighting tower 200, and the setting height of the first inlet of the deweighting tower 200 is equal to the setting height of the third inlet of the deweighting tower 200.
[0040] In one possible implementation, the first outlet of the delightening tower 300 is set at the top of the delightening tower 300, and the second outlet of the delightening tower 300 is set at the bottom of the delightening tower 300; the setting height of the first inlet of the delightening tower 300 is higher than the setting height of the third inlet of the delightening tower 300, and the setting height of the first inlet of the delightening tower 300 is equal to the setting height of the second inlet of the delightening tower 300.
[0041] It should be noted that although an ammonia regeneration system is introduced as an example in this application, those skilled in the art will understand that this application should not be limited thereto. In fact, users can flexibly set various parameters according to personal preferences and / or actual application scenarios, as long as the design is reasonable.
[0042] In this way, ammonia water is stored in an ammonia water tank and transmitted to a concentration tower through a pipeline. The concentration tower concentrates ammonia water to the top of the tower, and the liquid phase after treatment by the first condenser returns to the concentration tower, and the high-concentration ammonia gas after treatment by the first condenser enters the de-weighting tower; the ammonia water in the kettle of the de-weighting tower is treated by the second condenser, and the liquid phase produced returns to the ammonia water tank for further treatment, and the ammonia gas after de-weighting enters the light-removing tower; the non-condensable gas ammonia gas contained in the top of the light-removing tower is discharged to the outside of the device after passing through the condenser, and the liquid phase returns to the light-removing tower for further treatment, and the bottom of the light-removing tower is connected with a pure ammonia tank for collecting the output pure ammonia; in addition, the bottoms of the concentration tower, the de-weighting tower and the light-removing tower are respectively connected to the first reboiler, the second reboiler and the third reboiler for circulation, and heat is supplied to the bottom of the tower to improve the conversion efficiency of the device. According to an ammonia regeneration system of the present application, ammonia water can be recycled and reused, and ammonia water can be reprocessed to generate ultra-pure ammonia, thereby improving the economic benefits of recycling and reducing the production costs of enterprises.
[0043] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.
Claims
1. An ammonia regeneration system, characterized in that: include: Concentrator, de-heavy tower, de-light tower, ammonia water tank, pure ammonia tank, condenser and reboiler; The number of the condensers is three, namely a first condenser, a second condenser and a third condenser; The number of the reboilers is three, namely a first reboiler, a second reboiler and a third reboiler; The outlet end of the ammonia water tank is connected to the first inlet of the concentration tower through a pipeline, the concentration tower and the first condenser are connected in a loop, and the concentration tower and the first reboiler are connected in a loop; The gas phase outlet of the first condenser is connected to the first inlet of the de-weighting tower by a pipeline, the de-weighting tower is connected to the second condenser by a loop, the de-weighting tower is connected to the second reboiler by a loop, and the second outlet of the de-weighting tower is connected to the inlet end of the ammonia water tank by a pipeline; The gas phase outlet of the second condenser is connected to the first inlet of the light-removal tower by a pipeline, the light-removal tower and the third condenser are connected in a loop, the light-removal tower and the third reboiler are connected in a loop, and the second outlet of the light-removal tower and the pure ammonia tank are connected in a pipeline.
2. The ammonia regeneration system according to claim 1, characterized in that: The first outlet of the concentration tower is connected to the inlet end of the first condenser through a pipeline, and the liquid phase outlet of the first condenser is connected to the second inlet of the concentration tower through a pipeline; The first outlet of the de-weighting tower is connected to the inlet end of the second condenser through a pipeline, and the liquid phase outlet of the second condenser is connected to the second inlet of the de-weighting tower through a pipeline; The first outlet of the light-removing tower is connected to the inlet end of the third condenser by a pipeline, the liquid phase outlet of the third condenser is connected to the second inlet of the light-removing tower by a pipeline, and the gas phase outlet of the third condenser is suitable for connecting to the outside of the device.
3. The ammonia regeneration system according to claim 2, characterized in that: The second outlet of the concentrator is connected to the inlet of the first reboiler by a pipeline, and the outlet of the first reboiler is connected to the third inlet of the concentrator by a pipeline; The second outlet of the de-weighting tower is connected to the inlet of the second reboiler through a pipeline, and the outlet of the second reboiler is connected to the third inlet of the de-weighting tower through a pipeline; The second outlet of the light-removing tower is connected to the inlet end of the third reboiler by a pipeline, and the outlet end of the third reboiler is connected to the third inlet end of the light-removing tower by a pipeline.
4. The ammonia regeneration system according to any one of claims 1 to 3, characterized in that: A cooler is provided between the ammonia water tank and the concentrating tower, the outlet end of the ammonia water tank is connected to the first inlet of the cooler by a pipeline, and the first outlet of the cooler is connected to the first inlet of the concentrating tower by a pipeline.
5. The ammonia regeneration system according to claim 4, characterized in that: The second outlet of the concentration tower and the second inlet of the cooler are connected by a pipeline, and the second outlet of the cooler is suitable for being connected to the outside of the device.
6. The ammonia regeneration system according to claim 5, characterized in that: A raw material pump is arranged between the ammonia water tank and the cooler, the outlet end of the ammonia water tank is connected to the inlet end of the raw material pump by a pipeline, and the outlet end of the raw material pump is connected to the first inlet of the cooler by a pipeline.
7. The ammonia regeneration system according to claim 3, characterized in that: It also includes an industrial ammonia storage tank, and the outlet end of the industrial ammonia storage tank is connected to the fourth inlet of the concentration tower through a pipeline.
8. The ammonia regeneration system according to claim 7, characterized in that: The first outlet of the concentrating tower is arranged at the top of the concentrating tower, and the second outlet of the concentrating tower is arranged at the bottom of the concentrating tower; The first inlet of the concentrating tower is arranged at the middle position of the concentrating tower, the second inlet of the concentrating tower is arranged at a higher height than the first inlet of the concentrating tower, the third inlet of the concentrating tower is arranged at a lower height than the first inlet of the concentrating tower, and the fourth inlet of the concentrating tower is arranged at a height equal to the third inlet of the concentrating tower.
9. The ammonia regeneration system according to claim 3, characterized in that: The first outlet of the deweighting tower is arranged at the top of the deweighting tower, and the second outlet of the deweighting tower is arranged at the bottom of the deweighting tower; The setting height of the first inlet of the deweighting tower is lower than the setting height of the second inlet of the deweighting tower, and the setting height of the first inlet of the deweighting tower is equal to the setting height of the third inlet of the deweighting tower.
10. The ammonia regeneration system according to claim 3, characterized in that: The first outlet of the lightness removal tower is arranged at the top of the lightness removal tower, and the second outlet of the lightness removal tower is arranged at the bottom of the lightness removal tower; The setting height of the first inlet of the lightness removal tower is higher than the setting height of the third inlet of the lightness removal tower, and the setting height of the first inlet of the lightness removal tower is equal to the setting height of the second inlet of the lightness removal tower.