CN112546662B - Ammonium bicarbonate heavy crystallizer - Google Patents
Ammonium bicarbonate heavy crystallizer Download PDFInfo
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- CN112546662B CN112546662B CN202011384871.XA CN202011384871A CN112546662B CN 112546662 B CN112546662 B CN 112546662B CN 202011384871 A CN202011384871 A CN 202011384871A CN 112546662 B CN112546662 B CN 112546662B
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- fan
- crystallizer
- shaped material
- material conveying
- reaction kettle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/005—Selection of auxiliary, e.g. for control of crystallisation nuclei, of crystal growth, of adherence to walls; Arrangements for introduction thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
- B01J19/006—Baffles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
- B01J19/0066—Stirrers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/18—Stationary reactors having moving elements inside
- B01J19/1868—Stationary reactors having moving elements inside resulting in a loop-type movement
- B01J19/1881—Stationary reactors having moving elements inside resulting in a loop-type movement externally, i.e. the mixture leaving the vessel and subsequently re-entering it
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/26—Carbonates or bicarbonates of ammonium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00761—Details of the reactor
- B01J2219/00763—Baffles
- B01J2219/00765—Baffles attached to the reactor wall
Abstract
The invention relates to an ammonium bicarbonate heavy crystallizer, which is characterized in that a group of first fan-shaped material conveying plates (2) and second fan-shaped material conveying plates (3) are uniformly distributed on the upper part and the lower part of a reaction kettle (1) along the circumference of the inner wall respectively, the first fan-shaped material conveying plates (2) and the second fan-shaped material conveying plates (3) have the radial distance L from the top end to the inner wall of the reaction kettle, which is 1/4 of the diameter of the reaction kettle; the lower end of the first fan-shaped material conveying plate (2) is positioned at 1/2 of the upper half section of the crystallizer; the position of a second fan-shaped material conveying plate (3) arranged at the lower part of the reaction kettle is positioned at 1/2 of the lower half section of the crystallizer. The invention has the advantages that the upper stirring part and the lower stirring part are arranged in the ammonium bicarbonate heavy crystallizer, the fan-shaped material conveying plates are arranged at the upper section and the lower section, and after the stirring is opened, the materials can effectively slide downwards from the fan-shaped material conveying plates, so that the problem that the crystallizer is easy to form walls is solved.
Description
Technical Field
The invention belongs to the field of chemical production equipment, and relates to an ammonium bicarbonate heavy crystallizer.
Background
Ammonium bicarbonate (hereinafter referred to as ammonium bicarbonate) is a white compound, in the form of granular, plate-like or columnar crystals, having ammonia odor. Ammonium bicarbonate is a carbonate and must not be placed with an acid, which can deteriorate ammonium bicarbonate by reacting with ammonium bicarbonate to form carbon dioxide. But the rural area also has the property that ammonium bicarbonate can react with acid, the ammonium bicarbonate is put in a vegetable greenhouse, the greenhouse is sealed, the ammonium bicarbonate is put at a high position, and dilute hydrochloric acid is added. In this case, ammonium bicarbonate reacts with hydrochloric acid to produce ammonium chloride, water and carbon dioxide. The carbon dioxide can promote plant photosynthesis and increase vegetable yield, and the generated ammonium chloride can be used as fertilizer again. Ammonium carbonate has a chemical formula in which ammonium ions are ammonium salts, but the ammonium salts cannot be co-placed with alkali, so that the ammonium carbonate is not bound to be placed together with sodium hydroxide or calcium hydroxide.
In ammonium carbonate production, ammonia and CO are utilized 2 Gas in a certain amountUnder the temperature, the reaction generates ammonium bicarbonate in the carbonators, the ammonium bicarbonate turbid liquid that generates in the bottom of the carbonators, it carries out centrifugal production ammonium bicarbonate to adopt centrifuge in succession, centrifugal mother liquor returns to the carbonators again, industrial ammonium bicarbonate has high requirements for product quality, so make ammonium bicarbonate granularity good through adding the ammonium bicarbonate additive under the general production situation, reduce moisture, prevent that ammonium bicarbonate from not agglomerating, use 180 tons of additive for this reason every year, about 90 ten thousand yuan, cause the wasting of resources, brought additive impurity for the product simultaneously, influence product quality. The patent: a production method of ammonium bicarbonate recrystallization, CN201810037823.X, describes the ammonium bicarbonate recrystallization method, but in practice, the crystallizer is easy to form a wall, so that the treatment effect is poor, and the crystallizer needs to be cleaned in time, so that the treatment capacity is greatly reduced.
The invention content is as follows:
the invention aims to solve the defect that the ammonium bicarbonate heavy crystallizer in the prior art is easy to form walls, and provides the ammonium bicarbonate heavy crystallizer.
The invention is realized by the following technical scheme:
an ammonium bicarbonate re-crystallizer comprises a reaction kettle and is characterized in that,
1) A group of first fan-shaped material conveying plates and a group of second fan-shaped material conveying plates are uniformly distributed on the upper portion and the lower portion of the reaction kettle along the circumference of the inner wall.
Furthermore, the radial distance L between the top end of the first fan-shaped material conveying plate and the inner wall of the reaction kettle and the top end of the second fan-shaped material conveying plate, which are arranged at the upper part and the lower part of the reaction kettle 1, is 1/4 of the diameter of the reaction kettle.
Further, the lower end position of a first fan-shaped material conveying plate arranged at the upper part of the reaction kettle is positioned at 1/2 of the upper half section of the crystallizer; the position of a second fan-shaped material conveying plate arranged at the lower part of the reaction kettle is positioned at 1/2 of the lower half section of the crystallizer.
The invention has the advantages that the upper stirring part and the lower stirring part are arranged in the ammonium bicarbonate heavy crystallizer, the fan-shaped material conveying plates are arranged at the upper section and the lower section, and after the stirring is opened, the materials can effectively slide downwards from the fan-shaped material conveying plates, so that the problem that the crystallizer is easy to form a wall is solved.
Description of the drawings:
FIG. 1 is a diagram of the ammonium bicarbonate recrystallizer configuration of the present invention.
The specific implementation method comprises the following steps:
as shown in figure 1, the ammonium bicarbonate re-crystallizer provided by the invention is characterized in that a group of first fan-shaped material conveying plates 2 and a group of second fan-shaped material conveying plates 3 are uniformly distributed on the upper part and the lower part of a reaction kettle 1 along the circumference of the inner wall, and the sharp angles of the fan-shaped material conveying plates extend upwards and the fan-shaped cambered surfaces extend towards the center of the reaction kettle. The radial distance L between the top end of the fan-shaped cambered surface and the inner wall of the reaction kettle is 1/4 of the diameter of the reaction kettle. The lower end position H of the fan-shaped cambered surface of the first fan-shaped material conveying plate 2 arranged at the upper part of the reaction kettle is positioned at 1/2 of the upper half section of the crystallizer; the lower end position H of the fan-shaped cambered surface of the second fan-shaped material conveying plate 3 arranged at the lower part of the reaction kettle is positioned at 1/2 of the lower half section of the crystallizer.
The first fan-shaped material conveying plate and the second fan-shaped material conveying plate are made of metal materials, have the thickness of 3-8mm and can be welded on the inner wall of the reaction kettle.
And opening a circulating pump of the ammonium bicarbonate re-crystallizer, opening stirring after the materials enter the crystallizer, allowing the materials to flow from the upper section to the lower section, and fully re-crystallizing under the action of up-and-down stirring. The fan-shaped material conveying plates are arranged in the crystallizer, so that the materials are prevented from being solidified on the wall of the crystallizer.
The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner; those skilled in the art can make numerous possible variations and modifications to the present teachings, or modify equivalent embodiments to equivalent variations, without departing from the scope of the present teachings, using the methods and techniques disclosed above. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention.
Claims (3)
1. The utility model provides an ammonium bicarbonate crystallizer again, includes reation kettle (1), its characterized in that, sets up a set of first fan-shaped defeated flitch (2) on reation kettle (1) upper portion along inner wall circumference equipartition, sets up a set of second fan-shaped defeated flitch (3) in reation kettle (1) lower part along inner wall circumference equipartition, and the closed angle of fan-shaped defeated flitch makes progress, fan-shaped cambered surface extends to reation kettle center.
2. The ammonium bicarbonate recrystallizer according to claim 1, wherein the radial distance L between the top end of the first fan-shaped material conveying plate (2) arranged at the upper part of the reaction kettle (1) and the second fan-shaped material conveying plate (3) arranged at the lower part of the reaction kettle (1) and the inner wall of the reaction kettle is 1/4 of the diameter of the reaction kettle.
3. An ammonium bicarbonate re-crystallizer as claimed in claim 1 or 2, characterized in that the lower end of the first fan-shaped material feeding plate (2) arranged at the upper part of the reaction kettle is positioned at 1/2 of the upper half section of the crystallizer; the lower end of a second fan-shaped material conveying plate (3) arranged at the lower part of the reaction kettle is positioned at 1/2 of the lower half section of the crystallizer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011384871.XA CN112546662B (en) | 2020-12-02 | 2020-12-02 | Ammonium bicarbonate heavy crystallizer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011384871.XA CN112546662B (en) | 2020-12-02 | 2020-12-02 | Ammonium bicarbonate heavy crystallizer |
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| CN112546662A CN112546662A (en) | 2021-03-26 |
| CN112546662B true CN112546662B (en) | 2023-03-14 |
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| CN112546662A (en) | 2021-03-26 |
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