CN116428865A - Potassium sulfate reaction furnace with preheating function - Google Patents

Potassium sulfate reaction furnace with preheating function Download PDF

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Publication number
CN116428865A
CN116428865A CN202310529765.3A CN202310529765A CN116428865A CN 116428865 A CN116428865 A CN 116428865A CN 202310529765 A CN202310529765 A CN 202310529765A CN 116428865 A CN116428865 A CN 116428865A
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CN
China
Prior art keywords
reaction
potassium sulfate
reaction furnace
furnace
storage cavity
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Pending
Application number
CN202310529765.3A
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Chinese (zh)
Inventor
孟会来
陈科榕
黄金超
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Shaanxi Yide Taiyuan Technology Co ltd
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Shaanxi Yide Taiyuan Technology Co ltd
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Priority to CN202310529765.3A priority Critical patent/CN116428865A/en
Publication of CN116428865A publication Critical patent/CN116428865A/en
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    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01DCOMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D5/00Sulfates or sulfites of sodium, potassium or alkali metals in general
    • C01D5/06Preparation of sulfates by double decomposition
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B17/00Furnaces of a kind not covered by any preceding group
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D13/00Apparatus for preheating charges; Arrangements for preheating charges
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/004Systems for reclaiming waste heat
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/10Process efficiency

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

The invention provides a potassium sulfate reaction furnace with a preheating function, which is used for efficiently producing potassium sulfate; this potassium sulfate reacting furnace with preheat function is provided with the preheating furnace, can preheat the raw materials of production potassium sulfate in advance, and the reaction raw materials gets into the reacting furnace after preheating and can more quick efficient carry out the reaction for the production efficiency of potassium sulfate is higher, has carried out the reutilization to the energy that the energy reacting furnace heated simultaneously, can the energy saving.

Description

Potassium sulfate reaction furnace with preheating function
Technical Field
The invention belongs to the technical field of potassium sulfate production equipment, and particularly relates to a potassium sulfate reaction furnace with a preheating function.
Background
The potassium sulfate is a potash fertilizer prepared by mixing natural sulfate potassium ore such as alunite and chloride and calcining and decomposing at high temperature. The chemical formula is K 2 SO 4 . Potassium content (K) 2 50% -52% of O). White diamond or hexagonal crystal is easy to dissolve in water, has small hygroscopicity, belongs to physiological acid fertilizer, and has strong quick action. After being applied to soil, the potassium (K+) is dissolved in the soil solution and exists in an ionic stateIs selectively absorbed by plants and can be absorbed by soil colloid. After adsorption, caSO with low solubility is formed in calcareous soil 4 Formation of H in acid soil 2 SO 4 . Thus, the acidification of the soil is less than the HCl formed after potassium chloride application. Is suitable for various soil and crops, but should be preferentially distributed to crops like tobacco, potato, grape, flax and the like which are potassium-like and chlorine-like. Can be used as base fertilizer, additional fertilizer, seed fertilizer and external root fertilizer. The application should be divided into several times on sandy soil to avoid leaching of potassium. On acid soil, the fertilizer should be applied in combination with alkaline fertilizers such as lime to prevent further acidification of the soil and influence on plant growth. The potassium sulfate is an important variety in potash fertilizer, is a high-quality fertilizer, has a saline-alkali soil index of only about 40% of that of potassium chloride, and is particularly suitable for some commercial crops such as tobacco, watermelons, tea, oranges, grapes and the like which are free of chlorine. The potassium sulfate can not only improve the crop yield, but also improve the quality of the crops, and can improve the disease resistance of the crops when used for sulfur-deficient soil.
At present, the main methods for producing potassium sulfate are as follows: man Ha Mfa, association method, double decomposition method, etc. Wherein, man Ha Mfa is a process for producing potassium sulfate by using sulfuric acid and potassium chloride as raw materials. The production method comprises the steps of carrying out the internal reaction of potassium chloride and concentrated sulfuric acid in a Man Ha Mlu, firstly, generating potassium bisulfate by the reaction, and then continuously reacting with the potassium chloride at a higher temperature to generate potassium sulfate; natural gas is utilized to supply heat in the combustion chamber of the reaction furnace, the temperature is 1000-1100 ℃, and the temperature of the reaction chamber is controlled at 520-540 ℃. Cooling, crushing and partially neutralizing the reaction product to obtain a product, and cooling, washing and absorbing a byproduct HCl to obtain hydrochloric acid with the mass fraction of 32-35%.
Disclosure of Invention
The invention aims to provide a potassium sulfate reaction furnace with a preheating function, which is used for efficiently producing potassium sulfate.
The potassium sulfate reaction furnace with the preheating function comprises a reaction furnace, wherein a preheating furnace is arranged above the reaction furnace.
Further, the preheating furnace comprises an outer furnace body, and a sulfuric acid storage cavity and a potassium chloride storage cavity which are arranged in the outer furnace body, wherein a flame path is arranged between the outer furnace body and the sulfuric acid storage cavity and between the outer furnace body and the potassium chloride storage cavity.
Further, a sulfuric acid adding channel is arranged above the sulfuric acid storage cavity; and a potassium chloride adding channel is arranged above the potassium chloride storage cavity.
Further, the support components are arranged below the sulfuric acid storage cavity and the potassium chloride storage cavity.
Further, the reaction furnace comprises a reaction furnace body, a reaction cavity arranged in the reaction furnace body, and a second flame path is arranged between the reaction furnace body and the reaction cavity; a gas outlet is arranged above the reaction furnace body.
Further, the flame path is communicated with the second flame path through a channel.
Further, the sulfuric acid storage cavity is communicated with the reaction cavity through a sulfuric acid outlet channel; the potassium chloride storage cavity is communicated with the reaction cavity through a potassium chloride outlet channel.
Further, the lower part of the reaction cavity is a conical bottom, and the periphery of the conical bottom is provided with a potassium sulfate outlet.
Further, a supporting bottom plate is arranged below the reaction furnace body, and supporting legs are arranged between the reaction cavity and the supporting bottom plate.
Furthermore, observation windows are arranged around the reaction furnace.
The potassium sulfate reaction furnace with the preheating function is provided with the preheating furnace, so that raw materials for producing potassium sulfate can be preheated in advance, and the preheated reaction raw materials enter the reaction furnace to perform reaction more quickly and efficiently, so that the production efficiency of potassium sulfate is higher, and the energy heated by the energy reaction furnace is secondarily utilized, so that energy can be saved.
The invention will now be described in detail with reference to the drawings and examples.
Drawings
Fig. 1 is a schematic diagram of the structure of a hydrogen chloride cooling tower.
In the figure: 1. a reaction furnace; 2. a preheating furnace; 3. a sulfuric acid storage chamber; 4. a potassium chloride storage chamber; 5. an outer layer furnace body; 6. a flame path; 7. a sulfuric acid outlet channel; 8. a potassium chloride outlet channel; 9. a sulfuric acid addition channel; 10. potassium chloride is added into the channel; 11. an observation window; 12. a support assembly; 13. a channel; 14. a second flame path; 15. a reaction furnace body; 16. a reaction chamber; 17. a gas outlet; 18. a potassium sulfate outlet; 19. a conical bottom; 20. a support base plate; 21. and (5) supporting legs.
Detailed Description
The following detailed description, structural features and functions of the present invention are provided with reference to the accompanying drawings and examples in order to further illustrate the technical means and effects of the present invention to achieve the predetermined objects.
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "aligned," "overlapping," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operate in a specific orientation, and therefore should not be construed as limiting the present invention.
The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second" may include one or more such features, either explicitly or implicitly; in the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
Example 1
The embodiment provides a potassium sulfate reaction furnace with a preheating function as shown in fig. 1, which comprises a reaction furnace 1, wherein a preheating furnace 2 is arranged above the reaction furnace 1; the preheating furnace 2 can be used for producing the raw materials of potassium sulfate: the sulfuric acid and the potassium chloride are preheated, so that the temperature of the sulfuric acid and the potassium chloride is heated to a certain temperature before entering a reaction furnace, and the sulfuric acid and the potassium chloride are heated for the second time after entering the reaction furnace to reach the reaction temperature; thus, the time for heating to the reaction temperature is shortened, so that the reaction efficiency is increased, and the production efficiency of potassium sulfate can be improved; experiments prove that 1.5-2 ten thousand tons of potassium sulfate can be produced by using the potassium sulfate reaction furnace with the preheating function provided by the embodiment in the original production time of 1 ten thousand tons of potassium sulfate.
Further, the preheating furnace 2 comprises an outer furnace body 5, a secondary storage cavity 3 and a potassium chloride storage cavity 4 which are arranged in the outer furnace body 5, and a flame path 6 is arranged between the outer furnace body 5 and the sulfuric acid storage cavity 3 and between the outer furnace body 5 and the potassium chloride storage cavity 4, so that sulfuric acid and potassium chloride can be preheated respectively through the flame path 6.
Further, a sulfuric acid adding channel 9 is arranged above the sulfuric acid storage cavity 3; a potassium chloride adding channel 10 is arranged above the potassium chloride storage cavity 4, which is a design mode for conveniently adding sulfuric acid and potassium chloride.
Further, the supporting components 12 are arranged below the sulfuric acid storage cavity 3 and the potassium chloride storage cavity 4, at least 3 pieces 12 below the sulfuric acid storage cavity 3 are designed, at least 3 pieces 12 below the potassium chloride storage cavity 4 are also designed, stability of the sulfuric acid storage cavity 3 and the potassium chloride storage cavity 4 can be ensured, and the flame path 6 can be conveniently distributed around the sulfuric acid storage cavity 3 and the potassium chloride storage cavity 4, so that raw materials are preheated better.
Further, the reaction furnace 1 includes a reaction furnace body 15, a reaction chamber 16 disposed inside the reaction furnace body 15, and a second flame path 14 between the reaction furnace body 15 and the reaction chamber 16; a gas outlet 17 is arranged above the reaction furnace body 15.
Furthermore, the flame path 6 is communicated with the second flame path 14 through the channel 13, and heat energy which is not utilized by the second flame path 14 can be preheated after entering the flame path 6, so that the utilization rate of energy sources is improved, and partial energy sources are saved.
Further, the sulfuric acid storage cavity 3 is communicated with the reaction cavity 16 through a sulfuric acid outlet channel 7; the potassium chloride storage chamber 4 is communicated with the reaction chamber 16 through a potassium chloride outlet channel 8.
Further, a conical bottom 19 is arranged below the reaction cavity 16, and a potassium sulfate outlet 18 is arranged at the periphery of the conical bottom 19; in this way, it is ensured that the produced potassium sulfate can smoothly enter the potassium sulfate outlet 18; potassium sulfate is prevented from accumulating at the bottom of the reaction chamber 16.
Further, a supporting bottom plate 20 is arranged below the reaction furnace body 15, and supporting legs 21 are arranged between the reaction chamber 16 and the supporting bottom plate 20; the support base plate 20 and the support legs 21 stably support the reaction chamber 16.
Furthermore, the reaction furnace 1 is provided with observation windows 11 around, so that operators can observe the conditions in the reaction furnace conveniently.
In summary, the potassium sulfate reaction furnace with the preheating function is provided with the preheating furnace 2, so that raw materials for producing potassium sulfate can be preheated in advance, and the preheated raw materials enter the reaction furnace 1 to react more quickly and efficiently, so that the production efficiency of potassium sulfate is higher, and meanwhile, the energy heated by the energy reaction furnace is secondarily utilized, so that energy can be saved.
The foregoing is a further detailed description of the invention in connection with the preferred embodiments, and it is not intended that the invention be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the invention, and these should be considered to be within the scope of the invention.

Claims (10)

1. The utility model provides a potassium sulfate reacting furnace with preheat function, includes reacting furnace (1), its characterized in that: a preheating furnace (2) is arranged above the reaction furnace (1).
2. The potassium sulfate reaction furnace with a preheating function according to claim 1, wherein: the preheating furnace (2) comprises an outer furnace body (5), a sulfuric acid storage cavity (3) and a potassium chloride storage cavity (4) which are arranged in the outer furnace body (5), and a flame path (6) is arranged between the outer furnace body (5) and the sulfuric acid storage cavity (3) and between the outer furnace body (5) and the potassium chloride storage cavity (4).
3. The potassium sulfate reaction furnace with a preheating function according to claim 2, wherein: a sulfuric acid adding channel (9) is arranged above the sulfuric acid storage cavity (3); and a potassium chloride adding channel (10) is arranged above the potassium chloride storage cavity (4).
4. The potassium sulfate reaction furnace with a preheating function according to claim 2, wherein: and supporting components (12) are arranged below the sulfuric acid storage cavity (3) and the potassium chloride storage cavity (4).
5. The potassium sulfate reaction furnace with a preheating function according to claim 1, wherein: the reaction furnace (1) comprises a reaction furnace body (15), a reaction cavity (16) arranged in the reaction furnace body (15), and a second flame path (14) arranged between the reaction furnace body (15) and the reaction cavity (16); a gas outlet (17) is arranged above the reaction furnace body (15).
6. A potassium sulfate reaction furnace having a preheating function according to claim 2 or 5, characterized in that: the flame path (6) is communicated with the second flame path (14) through a channel (13).
7. A potassium sulfate reaction furnace having a preheating function according to claim 2 or 5, characterized in that: the sulfuric acid storage cavity (3) is communicated with the reaction cavity (16) through a sulfuric acid outlet channel (7); the potassium chloride storage cavity (4) is communicated with the reaction cavity (16) through a potassium chloride outlet channel (8).
8. The potassium sulfate reactor with preheating function according to claim 5, wherein: a conical bottom (19) is arranged below the reaction cavity (16), and a potassium sulfate outlet (18) is arranged on the periphery of the conical bottom (19).
9. The potassium sulfate reactor with preheating function according to claim 5, wherein: a supporting bottom plate (20) is arranged below the reaction furnace body (15), and supporting legs (21) are arranged between the reaction cavity (16) and the supporting bottom plate (20).
10. The potassium sulfate reactor with preheating function according to claim 5, wherein: and observation windows (11) are arranged around the reaction furnace (1).
CN202310529765.3A 2023-05-11 2023-05-11 Potassium sulfate reaction furnace with preheating function Pending CN116428865A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310529765.3A CN116428865A (en) 2023-05-11 2023-05-11 Potassium sulfate reaction furnace with preheating function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310529765.3A CN116428865A (en) 2023-05-11 2023-05-11 Potassium sulfate reaction furnace with preheating function

Publications (1)

Publication Number Publication Date
CN116428865A true CN116428865A (en) 2023-07-14

Family

ID=87083363

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310529765.3A Pending CN116428865A (en) 2023-05-11 2023-05-11 Potassium sulfate reaction furnace with preheating function

Country Status (1)

Country Link
CN (1) CN116428865A (en)

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Inventor after: Meng Huilai

Inventor after: Chen Kerong

Inventor after: Yu Honghong

Inventor before: Meng Huilai

Inventor before: Chen Kerong

Inventor before: Huang Jinchao