CN212687581U

CN212687581U - Potassium sulfate reaction furnace capable of improving yield

Info

Publication number: CN212687581U
Application number: CN202021661649.5U
Authority: CN
Inventors: 裴庆悦
Original assignee: Tangshan Sunfar Silicon Industries Co ltd
Current assignee: Tangshan Sunfar Silicon Industries Co ltd
Priority date: 2020-08-12
Filing date: 2020-08-12
Publication date: 2021-03-12
Anticipated expiration: 2030-08-12

Abstract

The utility model discloses a potassium sulphate reacting furnace that can increase production relates to potassium sulphate production facility technical field. The utility model comprises a reaction chamber; a central seat is symmetrically arranged in the bottom of the reaction chamber, a reaction bed is arranged on the outer circumference of the central seat, the reaction bed comprises hearth bricks built around the central seat, hearth castable is laid on the hearth bricks, and the hearth castable extends outwards from the central seat to form an elevation angle of 5 degrees; the center of the center seat is provided with a main shaft connected with a motor, and the top of the main shaft is respectively provided with a sulfuric acid distributor, a potassium chloride distributor and a rake arm from top to bottom. The utility model changes the elevation angle of the reaction bed from the original 9 degrees to the present 5 degrees by adding a layer of hearth castable on the hearth bricks, improves the production capacity and further improves the economic benefit on the premise of not increasing the large-scale investment cost; the utility model has the advantages of high efficiency and energy saving, creates favorable conditions for stable yield increase, energy saving and consumption reduction, and has good economic benefit and social benefit.

Description

Potassium sulfate reaction furnace capable of improving yield

Technical Field

The utility model relates to a potassium sulphate production facility technical field especially relates to a potassium sulphate reacting furnace that can increase production.

Background

The most important and most core equipment in the mannheim process potassium sulfate production equipment is the reaction furnace, and the annual yield and the benefit of the potassium sulfate in a company are determined by the yield of the reaction furnace. The reaction adopts a fixed bed double decomposition reaction method. Solid potassium chloride and 98 percent sulfuric acid are continuously added into a reaction chamber according to a certain feeding ratio, and the reaction is carried out under the condition that rake teeth are pushed to push materials at a constant speed at a high temperature of about 490 ℃. The raw materials are continuously fed under the condition of maintaining the normal material layer height, the finished potassium sulfate is continuously discharged into a finished product pusher from the outlet of the reaction chamber, and enters a finished product scraper conveyor through an air seal spiral conveyor under the actions of cooling and stirring and crushing.

The mannheim furnace capacity is generally measured as the daily capacity of a single reactor. The elevation angle of a reaction bed of a reaction chamber of the existing potassium sulfate reaction furnace by the Mannheim method is 9 degrees, the reaction time is long, the reaction is limited by manufacturing technology and materials, and the daily production capacity of a single reaction furnace in China is 30 tons or less. Therefore, how to improve the daily production capacity of a single reaction furnace under the existing conditions becomes a problem to be solved urgently.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a potassium sulphate reacting furnace that can increase output improves the reacting furnace day productivity under the condition that does not increase the investment, increases the production income.

In order to realize the technical purpose, the utility model adopts the following scheme: a potassium sulfate reaction furnace capable of improving the yield, which comprises a reaction chamber; a center seat is arranged at the bottom of the reaction chamber in a symmetrical center, a reaction bed is arranged on the outer circumference of the center seat, the reaction bed is built by hearth bricks around the center seat, hearth castable is laid on the hearth bricks, and the hearth castable extends outwards from the center seat to form an elevation angle of 5 degrees; the center of the center seat is provided with a main shaft connected with a motor, and the top of the main shaft is respectively provided with a sulfuric acid distributor, a potassium chloride distributor and a rake arm from top to bottom.

Compared with the prior art, the beneficial effects of the utility model reside in that: the utility model changes the elevation angle of the reaction bed from 9 degrees to 5 degrees by adding a layer of hearth castable on the hearth brick, thereby reducing the thickness of the material layer on the reaction bed from 40mm to 30mm, leading the material to be stirred and mixed more fully, shortening the reaction time of the material in the reaction furnace, and improving the daily production capacity of a single reaction furnace from 30 tons to 32 tons; on the premise of not increasing large-scale investment cost, the production capacity is improved, and further the economic benefit is improved; the utility model has the advantages of high efficiency and energy saving, creates favorable conditions for stable yield increase, energy saving and consumption reduction, and has good economic benefit and social benefit.

The utility model discloses an optimal scheme does:

the hearth bricks are in a mutual lap joint structure.

The hearth castable is prepared from high-temperature-resistant and acid-resistant materials.

The upper ends of the sulfuric acid distributor and the potassium chloride distributor are respectively provided with a feeding sleeve, the upper end of the feeding sleeve is connected with the top of the furnace, and the lower end of the feeding sleeve penetrates through a combustion chamber arranged at the upper part of the reaction chamber and is connected with the reaction chamber.

The sulfuric acid feed pipe and the potassium chloride feed pipe respectively penetrate through the feed sleeve from the outside of the top of the reaction furnace and are led into the upper ends of the sulfuric acid distributor and the potassium chloride distributor.

The sulfuric acid distributor is provided with a diversion trench, and the potassium chloride distributor is provided with two distributing trenches.

Rake teeth are uniformly distributed at the lower part of the rake arm.

The discharge ports of the reaction chamber are symmetrically arranged at two sides of the reaction chamber.

Drawings

Fig. 1 is a schematic top view of a reaction chamber of a potassium sulfate reaction furnace capable of improving yield according to an embodiment of the present invention;

FIG. 2 is a schematic view of an elevation angle formed by hearth bricks and hearth castable according to an embodiment of the present invention;

labeled as: 1-main shaft, 2-center seat, 3-sulfuric acid distributor, 4-rake teeth, 5-potassium chloride distributor, 6-rake arm, 7-hearth brick, 8-reaction chamber outlet and 9-hearth castable.

Detailed Description

The present invention will be described in detail with reference to the following embodiments in order to fully understand the objects, features and functions of the present invention, but the present invention is not limited thereto.

Referring to fig. 1, the potassium sulfate reactor capable of increasing yield provided by the present invention comprises a combustion chamber, a reaction chamber and a flue chamber, wherein the reaction chamber is located between the combustion chamber and the flue chamber and is equipped with a feeding and mechanical stirring and pushing device. A central seat 2 is arranged in the middle of the bottom of the reaction chamber, a reaction bed is arranged outside the central seat 2, the reaction bed is composed of hearth bricks 7 and hearth castable 9, and the like, which are built around the central seat 2, the hearth castable 9 is laid on the hearth bricks 7, and the hearth castable 9 extends outwards from the central seat 2 to form an elevation angle of 5 degrees; the center seat 2 is provided with a main shaft 1 connected with a motor at the symmetrical center, and the top of the main shaft 1 is respectively provided with a sulfuric acid distributor 3, a potassium chloride distributor 5 and a harrow arm 6 from top to bottom.

Referring to fig. 2, the top of the reaction chamber is made of high temperature resistant round dome-shaped black silica bricks, the center of the bottom of the reaction chamber is provided with a center seat 2, the outside of the center seat 2 is provided with a reaction bed, the reaction bed is composed of hearth bricks 7, hearth castable 9 and the like, the hearth bricks 7 are built around the center seat 2 of the reaction bed, and the hearth bricks 7 are built outwards from the center seat 2 and extend to form an elevation angle of 9 degrees. The hearth castable 9 is tightly poured on the hearth bricks 7, and the 9-degree elevation angle formed by the hearth bricks 7 is changed into a 5-degree elevation angle through pouring in the pouring process of the hearth castable 9.

The hearth castable 9 is prepared from high-temperature-resistant and acid-resistant materials, and the hearth castable 9 is prepared from corundum, aluminum oxide, aluminum dihydrogen phosphate and additives in proportion, so that the high-temperature resistance of the reaction bed is ensured, and the reaction bed has high acid resistance. Preferably, the hearth castable 9 is 80-type high-alumina refractory mortar. The hearth bricks 7 and the hearth bricks 7 adopt a mutual lap joint structure, thereby ensuring the close connection of the hearth bricks 7 of the reaction bed.

The center of the center seat 2 of the reaction bed is provided with a main shaft 1, the top of the main shaft 1 is respectively provided with a sulfuric acid distributor 3, a potassium chloride distributor 5 and a harrow arm 6 from top to bottom, and the main shaft 1 is driven by a motor (speed is changed by a speed reducer) to rotate at a constant speed. Rake teeth 4 are uniformly distributed on the lower part of the rake arm 6, the rake teeth 4 are driven by the main shaft 1, the revolution number is about 0.9r/min, and the functions of stirring, mixing, crushing and transferring finished products of materials are realized, and the height of a material bed is maintained.

The upper parts of the sulfuric acid distributor 3 and the potassium chloride distributor 5 are respectively provided with a feeding sleeve, the feeding sleeves are led down from the furnace top through a combustion chamber, namely, the upper end of the barrel body of the feeding sleeve is connected with the furnace top, and the lower end of the barrel body penetrates through the combustion chamber to be connected with the upper part of the reaction chamber. The sulfuric acid feed pipe and the potassium chloride feed pipe penetrate through the feed sleeve from the outside of the top of the reaction furnace and are respectively introduced into the upper ends of the sulfuric acid distributor 3 and the potassium chloride distributor 5. The charging sleeve effectively protects the charging tube. The sulfuric acid distributor 3 is provided with a diversion trench, and the potassium chloride distributor 5 is provided with two sub-material trenches.

The discharge ports 8 of the potassium sulfate finished product are symmetrically distributed at two sides of the reaction chamber, and the two discharge ports 8 are respectively connected with the pusher through the guide cylinder. The reaction chamber is also provided with a hydrogen chloride gas outlet which is connected with the carbon essence cooler through a pipeline. The upper part of the top of the reaction furnace is respectively provided with a potassium chloride screw conveyor and a sulfuric acid feeding metering device so as to maintain reasonable feed ratio control in the potassium sulfate production process, ensure high quality of the product, reduce consumption and prolong the service life of the rake teeth of the reaction bed.

The utility model discloses a use method:

the reaction bed is built by surrounding the central seat by the hearth bricks 7, the hearth bricks 7 form an elevation angle of 9 degrees when being built and extended outwards from the central seat 2, the hearth castable 9 is tightly poured on the hearth bricks 7, and the original pouring at the elevation angle of 9 degrees is changed into the pouring at the elevation angle of 5 degrees in the pouring process of the hearth castable 9. The raw material potassium chloride and the raw material sulfuric acid are respectively distributed around a central seat 2 of the reaction bed by a potassium chloride distributor 5 and a sulfuric acid distributor 3, a motor drives a main shaft 1 to rotate at a constant speed, and the sulfuric acid distributor 3, the potassium chloride distributor 5 and four rake arms 6 which are arranged on the main shaft 1 rotate at a constant speed along with the main shaft 1, so that the raw material potassium chloride and the raw material sulfuric acid can be uniformly distributed by the potassium chloride distributor 3 and the sulfuric acid distributor 5. The rake arm 6 rotates at a constant speed along with the main shaft 1 to drive the rake teeth 4 to fully stir the materials, so that the materials are uniformly mixed, and the materials are continuously and uniformly discharged from a discharge hole 8 of the reaction chamber after full reaction. After the elevation angle of the reaction bed is reduced from 9 degrees to 5 degrees, the thickness of a material layer on the reaction bed is reduced from 40mm to 30mm, materials are stirred and mixed more fully, the reaction is more thorough, the reaction time of the materials on the reaction furnace is reduced from 4 hours to 3 hours, so that the daily production capacity of a single reaction furnace is improved, the daily production capacity of the single reaction furnace is improved from 30 tons to 32 tons, favorable conditions are created for stable production, yield increase, energy conservation and consumption reduction, and good economic benefits and social benefits are achieved.

Finally, it is noted that: the preferred embodiments of the present invention have been shown and described, and it will be understood that modifications and variations may be made by those skilled in the art without departing from the scope of the invention.

Claims

1. A potassium sulfate reaction furnace capable of improving the yield, which comprises a reaction chamber; the reaction chamber is characterized in that a center seat is symmetrically arranged at the bottom of the reaction chamber, a reaction bed is arranged on the outer circumference of the center seat, the reaction bed is built by hearth bricks around the center seat, hearth castable is laid on the hearth bricks, and the hearth castable extends outwards from the center seat to form an elevation angle of 5 degrees; the center of the center seat is provided with a main shaft connected with a motor, and the top of the main shaft is respectively provided with a sulfuric acid distributor, a potassium chloride distributor and a rake arm from top to bottom.

2. The potassium sulfate reaction furnace capable of improving the yield according to claim 1, wherein the hearth bricks are in an overlapped structure.

3. The reactor for potassium sulfate with increased yield as claimed in claim 1, wherein the hearth castable is made of a material resistant to high temperature and acid.

4. The potassium sulfate reaction furnace capable of improving the yield as claimed in claim 1, wherein the upper ends of the sulfuric acid distributor and the potassium chloride distributor are respectively provided with a feeding sleeve, the upper end of the feeding sleeve is connected with the furnace top, and the lower end of the feeding sleeve passes through a combustion chamber arranged at the upper part of the reaction chamber and is connected with the reaction chamber.

5. The potassium sulfate reaction furnace capable of improving the yield as claimed in claim 4, wherein the sulfuric acid feeding pipe and the potassium chloride feeding pipe are respectively led into the upper ends of the sulfuric acid distributor and the potassium chloride distributor from the outside of the top of the reaction furnace through the feeding sleeves.

6. The reactor for potassium sulfate with increased production capacity as claimed in claim 1, wherein the sulfuric acid distributor is equipped with one diversion trench and the potassium chloride distributor is equipped with two distribution trenches.

7. The potassium sulfate reaction furnace with improved yield as claimed in claim 1, wherein rake teeth are uniformly distributed at the lower part of the rake arm.

8. The potassium sulfate reaction furnace capable of improving the yield as claimed in claim 1, wherein the discharge ports of the reaction chamber are symmetrically arranged at both sides of the reaction chamber.