Energy-saving heavy soda ash production equipment
By using atmospheric pressure heating and low-pressure steam decomposition of heavy soda ash, the production process of heavy soda ash is simplified, solving the problems of high energy consumption and equipment corrosion, achieving efficient and green production of heavy soda ash, and reducing production costs and energy consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG HAITIAN BIO-CHEM CO LTD
- Filing Date
- 2025-04-29
- Publication Date
- 2026-04-24
AI Technical Summary
The existing heavy soda ash production process suffers from high energy consumption, complex processes, and severe equipment corrosion. In particular, there is insufficient research on synthetic soda ash, making it difficult to meet the requirements for efficient and green production.
By using atmospheric pressure heating to decompose heavy alkali into heavy soda ash, the process is simplified. Low-pressure steam is used to heat the wet decomposition tower to decompose sodium bicarbonate and ammonium bicarbonate, eliminating the need for calcining heavy alkali to produce light ash and directly producing heavy soda ash.
It significantly reduces production costs, increases the sodium bicarbonate decomposition rate to over 90%, achieves energy conservation and consumption reduction, simplifies the process flow, and produces low-salt heavy soda ash.
Smart Images
Figure CN224156852U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of energy-saving heavy soda ash production equipment, specifically to an energy-saving heavy soda ash production equipment. Background Technology
[0002] In the current chemical production field, heavy soda ash, as an important basic chemical raw material, is widely used in key industries such as glass manufacturing, detergent production, and metallurgy. Currently, domestic research on heavy soda ash production processes mainly focuses on liquid-phase hydration. This process involves reacting light soda ash with water under specific conditions to crystallize, followed by separation and drying to obtain heavy soda ash. However, this method suffers from drawbacks such as high energy consumption, complex processes, and severe equipment corrosion. Research on the direct preparation of heavy soda ash from light soda ash primarily focuses on brine or natural soda ash resources; research based on synthetic soda ash is extremely scarce, making it difficult to meet the industry's growing demand for efficient and green production. While the existing wet decomposition sodium bicarbonate process has a certain foundation, there is still room for improvement in heavy soda ash production. This invention eliminates the complex processes and high-energy-consuming steps of traditional technologies, and uses atmospheric pressure heating to decompose heavy alkali into heavy soda ash. It is expected to significantly reduce production costs, achieve energy conservation and consumption reduction goals, fill the research gap related to heavy soda ash in China, bring technological innovation to the entire soda ash industry, help enterprises gain a competitive advantage in the fierce market competition, and promote the industry towards green, efficient and sustainable development. Utility Model Content
[0003] The purpose of this utility model is to address the shortcomings of existing technologies by proposing an energy-saving heavy soda ash production equipment.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: an energy-saving heavy soda ash production equipment, comprising a soda ash tank, a heavy soda ash solution pump connected to one side of the soda ash tank, a wet decomposition tower connected to the end of the heavy soda ash solution pump away from the soda ash tank, a decomposition liquid pump connected to the bottom end of the side of the wet decomposition tower away from the soda ash tank, an alkali solution buffer tank connected to the other end of the decomposition liquid pump, an alkali solution pump connected to the end of the alkali solution buffer tank away from the decomposition liquid pump, a mother liquor tank connected to the end of the mother liquor tank away from the alkali solution pump, a mother liquor pump connected to the other end of the mother liquor pump, and a hydration crystallizer connected to the other end of the hydration crystallizer, with a high-quality heavy ash calcining furnace arranged below the hydration crystallizer.
[0005] As a further description of the above technical solution:
[0006] The upper end of the hydration crystallizer is connected to a spiral feeder, which performs scraping operations through a scraper for returning alkali.
[0007] As a further description of the above technical solution:
[0008] The spiral feeder at the lower end of the hydration crystallizer conveys the hydrated alkali crystals to the high-quality heavy ash calcining furnace through the alkali return scraper. The high-quality heavy ash calcining furnace is located below the alkali return scraper.
[0009] As a further description of the above technical solution:
[0010] A finished product scraper is provided on one side of the high-quality heavy ash calcining furnace for scraping and cooling alkali.
[0011] This utility model has the following beneficial effects:
[0012] 1. After the heavy soda ash is prepared into a suspension, it is sent to a wet decomposition tower. Low-pressure steam is used to heat the heavy soda ash to decompose the sodium bicarbonate and ammonium bicarbonate. The soda ash solution produced by the decomposition is directly sent to a liquid phase hydration crystallizer for the production of heavy soda ash, which greatly simplifies the process flow of heavy soda ash.
[0013] 2. The decomposition rate of sodium bicarbonate can be increased to over 90%, and the decomposed alkali solution can be directly introduced into the Na2CO3·H2O crystallization zone to produce low-salt heavy soda ash; and the process of calcining heavy soda ash to produce light ash is eliminated. The steam used in wet decomposition is low-pressure steam, which saves a lot of medium-pressure steam consumption and achieves energy saving and cost reduction. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of an energy-saving heavy soda ash production equipment proposed in this utility model.
[0015] Legend:
[0016] 1. Alkali tank; 2. Heavy alkali solution pump; 3. Wet decomposition tower; 4. Decomposition liquid pump; 5. Alkali buffer tank; 6. Alkali pump; 7. Mother liquor tank; 8. Mother liquor pump; 9. Hydration crystallizer; 10. Screw feeder; 11. Alkali return scraper; 12. High-quality heavy ash calcining furnace; 13. Finished product scraper. Detailed Implementation
[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0018] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The utility model will be further described in detail below with reference to the accompanying drawings.
[0019] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0020] Example 1:
[0021] like Figure 1As shown in the illustration, this embodiment provides an energy-saving heavy soda ash production equipment, including a soda ash tank 1, which is used to mix crude heavy soda ash with mother liquor to form a heavy soda ash suspension. A heavy soda ash solution pump 2 is connected to one side of the soda ash tank 1, which pumps the heavy soda ash suspension out of the tank. A wet decomposition tower 3 is connected to the end of the pump 2 away from the tank 1, and the heavy soda ash suspension is fed into the wet decomposition tower 3. Steam at 0.5 MPa is introduced into the bottom and middle sections of the wet decomposition tower 3, causing the sodium bicarbonate and ammonium bicarbonate in the suspension to decompose within the tower. The carbon dioxide and ammonia produced by the decomposition are discharged from the top of the tower and incorporated into the soda ash furnace gas system. A decomposition liquid pump 4 is connected to the bottom end of the wet decomposition tower 3 away from the tank 1, which extracts the decomposed soda ash solution from the bottom of the tower. The other end of the decomposition pump 4 is connected to an alkali buffer tank 5, which is used to temporarily store the decomposed alkali solution. If the sodium bicarbonate content in the alkali solution is too high, the sodium bicarbonate content can be reduced by adding caustic soda solution to the alkali buffer tank 5. The end of the alkali buffer tank 5 furthest from the decomposition pump 4 is connected to an alkali pump 6, which pumps the alkali solution out of the buffer tank 5. The end of the alkali pump 6 furthest from the pump 4 is connected to a mother liquor tank 7, into which the alkali solution is fed. Simultaneously, light soda ash is added to the mother liquor tank 7 to prepare an alkali solution of a certain concentration as a hydrated mother liquor. The end of the mother liquor tank 7 furthest from the pump 6 is connected to a mother liquor pump 8, which pumps the hydrated mother liquor from the mother liquor tank 7 to subsequent equipment. The other end of the mother liquor pump 8 is connected to a hydration crystallizer 9, into which the hydrated mother liquor undergoes a hydration reaction and produces monohydrate alkali crystals. Below the hydrated crystallizer 9 is a high-quality heavy ash calcining furnace 12, used for calcining the monohydrate alkali crystals.
[0022] Example 2:
[0023] A screw feeder 10 is connected to the upper end of the hydration crystallizer 9. The screw feeder 10 is used to transport materials. The screw feeder 10 performs a scraping operation through the return alkali scraper 11 set above. The return alkali scraper 11 scrapes the monohydrate alkali crystals generated in the hydration crystallizer 9 into the screw feeder 10 so that the monohydrate alkali crystals can be transported out.
[0024] The spiral feeder 10 at the lower end of the hydrate crystallizer 9 conveys the monohydrate alkali crystals to the high-quality heavy ash calcining furnace 12 through the alkali return scraper 11. The high-quality heavy ash calcining furnace 12 is located below the alkali return scraper 11, which facilitates the monohydrate alkali crystals to smoothly enter the high-quality heavy ash calcining furnace 12 for calcination by gravity.
[0025] A finished product scraper 13 is provided on one side of the high-quality heavy ash calcining furnace 12. The finished product scraper 13 is used to scrape the heavy soda ash obtained after calcination in the high-quality heavy ash calcining furnace 12 and transport it out for cooling operation, finally obtaining high-quality heavy soda ash product.
[0026] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An energy-saving heavy soda ash production equipment, characterized in that: The system includes an alkali-refining tank (1), a heavy alkali solution pump (2) connected to one side of the alkali-refining tank (1), a wet decomposition tower (3) connected to the end of the heavy alkali solution pump (2) away from the alkali-refining tank (1), a decomposition liquid pump (4) connected to the bottom end of the side of the wet decomposition tower (3) away from the alkali-refining tank (1), an alkali solution buffer tank (5) connected to the other end of the decomposition liquid pump (4), an alkali solution pump (6) connected to the end of the alkali solution buffer tank (5) away from the decomposition liquid pump (4), a mother liquor tank (7) connected to the end of the mother liquor tank (7) away from the alkali solution pump (6), a mother liquor pump (8) connected to the other end of the mother liquor pump (8), and a hydration crystallizer (9) connected to the other end of the hydration crystallizer (9). A high-quality heavy ash calcining furnace (12) is set below the hydration crystallizer (9).
2. The energy-saving heavy soda ash production equipment according to claim 1, characterized in that: The upper end of the hydration crystallizer (9) is connected to a screw feeder (10), which performs scraping operation through the return alkali scraper (11) set above.
3. The energy-saving heavy soda ash production equipment according to claim 2, characterized in that: The spiral feeder (10) at the lower end of the hydrate crystallizer (9) transports the hydrate crystallizer to the high-quality heavy ash calciner (12) through the alkali return scraper (11). The high-quality heavy ash calciner (12) is located below the alkali return scraper (11).
4. The energy-saving heavy soda ash production equipment according to claim 3, characterized in that: The high-quality heavy ash calcining furnace (12) is equipped with a finished product scraper (13) on one side for scraping and cooling alkali.