CN113666338B - Production device, heat dissipation mechanism and process flow of potassium sulfate byproduct hydrochloric acid by Mannheim method - Google Patents

Abstract

The application discloses mannhamel method potassium sulfate by-product hydrochloric acid apparatus for producing, heat dissipation mechanism and process flow, apparatus for producing includes the rectangle drain pan, connect the fill, the flowing back valve, connect the casing, the burner gas entry, connect the cover, the drain pipe, radiator fan, the top casing, the overhead guard, the guiding fan, the inlet hood, the filter, the connecting pipe, the mounting bracket, the air pump, the adapter sleeve, the water tank, the high pressure water pump, first hose, the transfer pump, the second hose, the filler, first conveyer pipe, the three-way pipe, first gate valve, the second conveyer pipe, the third conveyer pipe, flat shell, the volute, the venthole, exhaust grid, the cooling tube, the pipe, the heat dissipation strip, the electrical heating board, the ring pipe, the atomizer, the straight tube, the sprinkler bead, drinking-water pipe and feed liquor pipe. The method has the beneficial effects that the furnace gas can be recycled, the byproduct hydrochloric acid can be produced, the hydrochloric acid containing impurities and the high-purity hydrochloric acid can be formed through recycling, and the overall recycling effect is good.

Description

Production device, heat dissipation mechanism and technological process for potassium sulfate byproduct hydrochloric acid by Mannheim method

Technical Field

The application relates to the field of potassium sulfate prepared by a Mannheim method, in particular to a device, a heat dissipation mechanism and a process flow for preparing a byproduct hydrochloric acid of potassium sulfate prepared by the Mannheim method.

Background

The Mannheim process is known for the production of potassium sulfate in a mechanical sulfate furnace developed by Mannheim, germany. In a Mannheim furnace reaction chamber, concentrated sulfuric acid and potassium chloride are continuously added according to equivalent proportion under micro negative pressure and at the temperature of 520-540 ℃ for thermal decomposition reaction to generate potassium sulfate and hydrogen chloride. The coarse potassium sulfate material and furnace gas are led out from the furnace continuously and treated separately to obtain potassium sulfate crystal (or crystal remanufacturing material) and 31% industrial hydrochloric acid. The heat of the Mannheim furnace is provided by high-temperature flue gas generated by burning fuel (fuel oil, natural gas or city gas and the like) through partition wall conduction and radiation heat transfer.

In the prior art, when the potassium sulfate is manufactured by the Mannheim method, byproducts are generated, a recycling device is not needed, the byproducts are recycled, only hydrochloric acid containing impurities can be obtained through common cooling equipment, and a high-purity hydrochloric acid product cannot be obtained. Therefore, a production device, a heat dissipation mechanism and a process flow for producing potassium sulfate byproduct hydrochloric acid by the Mannheim method are needed.

Disclosure of Invention

The embodiment provides a production device, a heat dissipation mechanism and a process flow for producing potassium sulfate byproduct hydrochloric acid by a Mannheim method, which are used for solving the problem that the byproduct is not easy to recover in the prior art.

According to one aspect of the application, a production device of potassium sulfate by-product hydrochloric acid by a Mannheim method is provided, which comprises a rectangular bottom shell, a connecting hopper, a connecting shell and a top shell, wherein a filtering air inlet assembly is arranged at the top of the rectangular bottom shell, the bottom of the connecting hopper is fixedly connected with the top of the rectangular bottom shell, the connecting hopper is communicated with the rectangular bottom shell, the top of the connecting hopper is fixedly connected with the bottom of the connecting shell, the connecting hopper is communicated with the connecting shell, a furnace gas inlet is fixedly arranged at one side of the connecting shell, an opening-closing valve is arranged between the furnace gas inlet and the connecting shell, the top of the connecting shell is communicated with the bottom of the top shell, a heat dissipation mechanism is arranged between the connecting shell and the top shell, a water spray assembly is arranged inside the top of the top shell and one end of the connecting pipe, and the rectangular bottom shell is communicated with the connecting pipe, a valve body is arranged between the connecting pipe and the rectangular bottom shell, the tail end of the connecting pipe is connected with an air inlet of an air pump, an air outlet of the air pump is connected with a connecting sleeve, the tail end of the connecting sleeve is fixedly connected with one side of the top shell and is communicated with the top shell, the connecting sleeve is positioned above the water spray assembly, the bottom of the air pump is fixedly connected with a mounting rack, the mounting rack is fixedly arranged at the top of the rectangular bottom shell, the top of the top shell is fixedly connected with a top cover, the top cover is communicated with the top shell, the top of the top cover is fixedly provided with a flow guide fan, the top of the flow guide fan is connected with one end of a first conveying pipe, the tail end of the first conveying pipe is connected with a three-way pipe, the three-way pipe is further connected with a second conveying pipe and a third conveying pipe, and the bottom end of the second conveying pipe and the bottom end of the third conveying pipe are both connected with an air dispersing mechanism, a first gate valve is installed between the second conveying pipe and the three-way pipe, and a second gate valve is installed between the third conveying pipe and the three-way pipe.

Furthermore, the filtering air inlet assembly comprises an air inlet hood and a filter, the bottom of the air inlet hood is fixedly connected with the top of the rectangular bottom shell, the air inlet hood is communicated with the rectangular bottom shell, the filter is fixedly embedded and installed at the top of the air inlet hood, and a drain valve is fixedly installed on one side of the rectangular bottom shell.

Further, heat dissipation mechanism is including connecting cover, cooling tube, radiator fan and exhaust grid, it is between connecting casing and top casing to connect cover fixed mounting, the figure of cooling tube is a plurality of, a plurality of the equidistant setting of cooling tube is connecting between casing and the top casing, the both ends of cooling tube respectively with be connected casing and top casing intercommunication, connect the fixed gomphosis in front of cover and install radiator fan, the exhaust grid is installed to the fixed gomphosis in the back of connecting the cover.

Furthermore, a drain pipe is fixedly installed at the bottom of one side of the connecting cover.

Further, radiator fan's rear end fixed mounting has the annular tube, evenly install a plurality of atomizer on the annular tube, the annular tube is connected with first hose, the end-to-end connection of first hose has the high pressure water pump, high pressure water pump fixed mounting is on the water tank, the water inlet of high pressure water pump is connected with the drinking-water pipe, the drinking-water pipe sets up inside the water tank.

Further, the water spray component comprises a straight pipe and a water spray head, the straight pipe is fixedly installed inside the top shell, the number of the water spray heads is a plurality of, the plurality of water spray heads are installed at the bottom of the straight pipe at equal intervals, one end of the straight pipe is a closed end, the other end of the straight pipe is an open end, the open end is connected with one end of a second hose, the end of the second hose is connected with an infusion pump, the infusion pump is fixedly installed on the water tank, a water inlet of the infusion pump is connected with a liquid inlet pipe, the liquid inlet pipe is arranged inside the water tank, a water filling port is installed at the top of the water tank, and a sealing cover is installed on the water filling port.

Further, the bottom of the rectangular bottom shell is fixedly embedded with an electric heating plate.

Further, the cooling tube comprises pipe and heat dissipation strip, the figure of heat dissipation strip is a plurality of, and the even fixed mounting of a plurality of heat dissipation strip is in the outside of pipe.

Further, the air dispersing mechanism comprises a flat shell, flat shells and air outlets, the flat shells are fixedly communicated with the bottom of the flat shell and are uniformly distributed, and the air outlets are uniformly formed in the surfaces of the flat shells.

Mannheim method potassium sulphate by-product hydrochloric acid apparatus for producing's heat dissipation mechanism, including connecting cover, cooling tube, radiator fan and exhaust grille, connecting cover fixed mounting is between connecting casing and top casing, the figure of cooling tube is a plurality of, a plurality of the equidistant setting of cooling tube is between connecting casing and top casing, the both ends of cooling tube respectively with be connected casing and top casing intercommunication, radiator fan is installed to the positive fixed gomphosis of connecting cover, exhaust grille is installed to the back fixed gomphosis of connecting cover, one side bottom fixed mounting of connecting cover has the drain pipe, radiator fan's rear end fixed mounting has the ring pipe, evenly install a plurality of atomizer on the ring pipe, the ring pipe is connected with first hose, the end-to-end connection of first hose has high pressure water pump, high pressure water pump fixed mounting is on the water tank, high pressure water pump's water inlet is connected with the drinking-water pipe, the drinking-water pipe sets up inside the water tank, the cooling tube comprises pipe and heat dissipation strip, the figure of heat dissipation strip is a plurality of, and the even fixed mounting is in the outside of a plurality of heat dissipation strip.

As another aspect of the present application, there is provided a production process comprising the steps of:

step a, adding dry potassium chloride and concentrated sulfuric acid into the center of a Mannheim furnace reaction chamber according to an equivalent proportion, fully stirring and mixing reaction materials through a rotating rake tooth, slowly moving a material bed layer from the center to the periphery, staying for 4-5 hours, fully performing thermal decomposition reaction, continuously leading out a generated potassium sulfate coarse material through a spiral material pushing cooler arranged at the periphery of the furnace, naturally cooling through a belt, screening and crushing, neutralizing stone powder, storing in an intermediate hopper, packaging and warehousing; the coal gas enters a combustion chamber of a Mannheim furnace for combustion, the temperature of the flue gas is 1000-1100 ℃, heat is transferred to the reaction chamber through a partition wall in a conduction and radiation mode, and the temperature of the reaction chamber is controlled to be 520-540 ℃; the smoke of the combustion chamber is discharged after reaching the standard; leading out the generated high-temperature furnace gas from the furnace, wherein the temperature is about 450 ℃;

b, furnace gas enters the connecting shell through a furnace gas inlet, is guided by the guide fan and flows upwards, is radiated through the radiating pipe, is blown by the radiating fan, is sucked by the water pumping pipe through the high-pressure water pump, is conveyed through the first hose and the annular pipe, is sprayed out through the atomizing nozzle and is sprayed on the radiating pipe, and is matched with blowing to realize radiating and cooling, so that the temperature of air flow is reduced, the temperature is reduced to 180-240 ℃, the liquefaction of sulfuric acid is realized, meanwhile, the suction of water in the water tank is performed through the liquid inlet pipe through the liquid conveying pump, the water is guided through the second hose, enters the straight pipe, is sprayed out through the water spraying head, and part of hydrogen chloride gas and the liquefied sulfuric acid are absorbed, fall into the rectangular bottom shell and are gathered to form acid B;

c, removing sulfuric acid gas, enabling the sulfuric acid gas to enter a first conveying pipe through a top cover, conveying the sulfuric acid gas through a three-way pipe, and enabling the sulfuric acid gas to enter a second conveying pipe or a third conveying pipe, wherein two gas dispersing mechanisms are immersed in a container, water is contained in the container, the gas can be dispersed through the gas dispersing mechanisms and uniformly dispersed in the water, and high-purity industrial hydrochloric acid is formed and is A acid;

and d, allowing the acid B to enter a rectangular bottom shell, heating the acid B through an electric heating plate to volatilize the inside of the rectangular bottom shell, wherein the heating temperature is lower than 150 ℃, generating hydrogen chloride gas, allowing the gas to enter a top shell through the driving of an air pump to reduce the hydrogen chloride in the acid B, improving the proportion of sulfuric acid, forming industrial hydrochloric acid with impurities, and using the industrial hydrochloric acid as a general strong acid.

The application has the advantages that:

the whole production device, the heat dissipation mechanism and the process flow are improved on the basis of the existing mode of producing sulfate by Mannheim, the furnace gas can be recycled, the byproduct hydrochloric acid can be produced, the hydrochloric acid containing impurities and the high-purity hydrochloric acid can be formed by recycling and processing, and the whole recycling effect is good.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without inventive labor.

FIG. 1 is a schematic overall structure diagram of one embodiment of the present application;

FIG. 2 is a schematic view of the internal structure of a joint boot according to an embodiment of the present application;

FIG. 3 is a schematic view of a heat pipe according to an embodiment of the present application;

FIG. 4 is a schematic view of a rectangular bottom housing and an electrical heating plate according to an embodiment of the present application;

FIG. 5 is a schematic view of the internal structure of a top housing according to an embodiment of the present application;

FIG. 6 is a schematic view of an embodiment of the annular tube and atomizer head of the present application;

FIG. 7 is a schematic view of the internal structure of a water tank according to an embodiment of the present application;

FIG. 8 is a schematic structural view of an air dispersing mechanism according to an embodiment of the present application.

In the figure: 1. rectangular bottom shell, 2, connecting bucket, 3, liquid discharge valve, 4, connecting shell, 5, furnace gas inlet, 6, connecting cover, 7, water discharge pipe, 8, radiator fan, 9, top shell, 10, top cover, 11, guide fan, 12, air inlet cover, 13, filter, 14, connecting pipe, 15, mounting rack, 16, air pump, 17, connecting sleeve, 18, water tank, 19, high-pressure water pump, 20, first hose, 21, infusion pump, 22, second hose, 23, water filling port, 24, first delivery pipe, 25, three-way pipe, 26, first gate valve, 27, second gate valve, 28, second delivery pipe, 29, third delivery pipe, 30, flat shell, 31, flat shell, 32, air outlet, 33, exhaust grille, 34, heat radiation pipe, 3401, round pipe, 3402, heat radiation strip, 35, electric heating plate, 36, annular pipe, 37, atomizing nozzle, 38, straight pipe, 39, water spray nozzle, 40, water suction pipe, 41, liquid inlet pipe.

Detailed Description

In order that those skilled in the art will better understand the technical solutions of the present invention, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the detailed description of the present invention, and it is obvious that the embodiments described are only a part of the detailed description of the present invention, and not all of the detailed description. All other embodiments that can be derived by a person skilled in the art from the detailed description of the embodiments given herein without making any creative effort shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances in order to facilitate the description of the embodiments of the application herein. Moreover, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily for the purposes of better describing the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings in conjunction with the detailed description.

The production apparatus, the heat dissipation mechanism, and the process flow in this embodiment may be used in combination with various sulfate mechanical furnaces, for example, the following potassium sulfate mannheim process reaction furnace is provided in this embodiment, and the production apparatus, the heat dissipation mechanism, and the process flow in this embodiment may be used in combination with the following reaction furnace.

The utility model provides a mannhamel method potassium sulphate reacting furnace, includes the stove bottom platform, is provided with the furnace body on the stove bottom platform, be provided with heating chamber, reacting chamber and unloading agitating unit in the furnace body, the bottom of furnace body is provided with the ejection of compact pipeline with the reacting chamber intercommunication, ejection of compact pipeline and stove bottom platform intercommunication, the internal diameter of ejection of compact pipeline is big end down, is big end down's round platform form, the ejection of compact pipeline includes ejection of compact pipeline I and ejection of compact pipeline II, ejection of compact pipeline I and ejection of compact pipeline II symmetry setting in the bottom of furnace body. The heating chamber comprises a furnace top heating chamber and a furnace wall heating chamber, and the furnace top heating chamber is communicated with the furnace wall heating chamber; the heating chamber is communicated with a flue. The top of the reaction chamber is communicated with a feed pipeline and a hydrochloric acid outlet pipeline which are respectively communicated with the outside; the side wall of the reaction chamber is communicated with an access hole, and the access hole is communicated with the furnace wall; the volume of the reaction chamber is cubic meter. The blanking stirring device comprises a blanking device and a stirring device, and the blanking device comprises a sulfuric acid distributor and a potassium chloride distributor; the stirring device comprises a stirring arm, and four rake teeth are uniformly arranged on the stirring arm; the stirring arm is provided with a root. The furnace bottom platform is made of reinforced concrete and a steel structure frame; the furnace body comprises a furnace top, a furnace wall and a furnace bottom, the outer layer of the furnace top is perlite, and the inner layer of the furnace top is mullite light refractory material; the outer layer of the furnace wall is red bricks, the middle layer of the furnace wall is aluminum silicate heat-insulating cotton, and the inner layer of the furnace wall is high-aluminum refractory bricks; the outer layer of the furnace bottom is made of a heat insulation material, and the inner layer of the furnace bottom is made of a refractory material; a furnace top platform is arranged above the furnace top and is a steel structure frame; the outer layer of the reaction chamber is made of high-alumina refractory bricks, and the inner layer of the reaction chamber is made of alloy materials. The potassium sulfate produced by the scheme adopts potassium chloride with K2O being equal to or larger than 60% and concentrated sulfuric acid with H2SO4 being equal to or larger than 98%; the produced products are potassium sulfate with K2O being equal to or larger than 50 percent and hydrochloric acid with HCL being equal to or larger than 31 percent; heated by natural gas or coal gas. Heating natural gas or coal gas to 550 ℃, continuously adding potassium chloride and concentrated sulfuric acid into the center of a reaction chamber according to a proportion, rotationally stirring by a stirring device in a furnace, stirring materials towards the edge of the reaction chamber while stirring, discharging the materials from two symmetrical discharge ports, and entering a next production link; the generated hydrogen chloride gas enters the hydrochloric acid absorption device from the gas outlet at the edge of the furnace top. The potassium sulfate reaction furnace has the advantages of simple structure, stable performance, low energy consumption and the like. At present columniform ejection of compact pipeline often leads to potassium sulphate unloading difficulty, when serious, can block up ejection of compact pipeline even, influence the subsequent processing process of potassium sulphate, so the design of this scheme thinks about with ejection of compact pipeline on the basis of present discharge gate size with the pipeline improvement for big end down's round platform form, more do benefit to the unloading of potassium sulphate, the discharge gate of the ejection of compact pipeline after the improvement equals with the discharge gate size and dimension of present ejection of compact pipeline, different place lies in the shape of pipeline, by traditional straight tube-shape, improve to big end down's form.

Of course, the embodiment can also be used for the mechanical sulfate furnace with other structures. Here, description is not repeated, and the following describes a production apparatus, a heat dissipation mechanism, and a process flow according to a specific embodiment of the present application.

Detailed description of the invention

The following is a specific embodiment of a production device for producing potassium sulfate by-product hydrochloric acid by the Mannheim method.

Referring to fig. 1-8, the apparatus for producing potassium sulfate by-product hydrochloric acid by mannheim process comprises a rectangular bottom case 1, a connecting hopper 2, a connecting casing 4 and a top casing 9, wherein a filtering air inlet assembly is disposed at the top of the rectangular bottom case 1, the bottom of the connecting hopper 2 is fixedly connected with the top of the rectangular bottom case 1, the connecting hopper 2 is communicated with the rectangular bottom case 1, the top of the connecting hopper 2 is fixedly connected with the bottom of the connecting casing 4, the connecting hopper 2 is communicated with the connecting casing 4, an oven gas inlet 5 is fixedly mounted at one side of the connecting casing 4, an opening/closing valve is mounted between the oven gas inlet 5 and the connecting casing 4, the top of the connecting casing 4 is communicated with the bottom of the top casing 9, a heat dissipation mechanism is disposed between the connecting casing 4 and the top casing 9, a water spray assembly is disposed inside the top casing 9, the top of the rectangular bottom case 1 is fixedly connected with one end of the connecting pipe 14, the rectangular bottom of the connecting bottom case 1 is communicated with the connecting pipe 14, a valve body is mounted between the connecting pipe 14 and the rectangular bottom casing 1, the air inlet of the connecting casing 14 is connected with an air pump 16, an air outlet connecting sleeve 17 of the air pump 16 is connected with an air guide sleeve 17, the top casing 17 is fixedly connected with a top cover 15, the top casing 10 of the top casing 9, a top casing 10 is fixedly connected with a top casing 10, a top casing 10 of the air guide pipe 9, a first air guide pipe 10 is fixedly connected with a top cover 10, a top cover 10 is fixedly connected with a top cover 15, the three-way pipe 25 is further connected with a second conveying pipe 28 and a third conveying pipe 29, the bottom end of the second conveying pipe 28 and the bottom end of the third conveying pipe 29 are both connected with an air dispersing mechanism, a first gate valve 26 is installed between the second conveying pipe 28 and the three-way pipe 25, a second gate valve 27 is installed between the third conveying pipe 29 and the three-way pipe 25, furnace gas can be recycled, production of byproduct hydrochloric acid can be carried out, impurity-containing hydrochloric acid and high-purity hydrochloric acid can be formed through recycling, and the overall recycling effect is good.

The filtering air inlet assembly comprises an air inlet cover 12 and a filter 13, the bottom of the air inlet cover 12 is fixedly connected with the top of the rectangular bottom shell 1, the air inlet cover 12 is communicated with the rectangular bottom shell 1, the filter 13 is fixedly embedded and installed at the top of the air inlet cover 12, a drain valve 3 is fixedly installed on one side of the rectangular bottom shell 1 and used for filtering in the air inlet process, and the filter 13 can be a high-efficiency filter.

Heat dissipation mechanism is including connecting cover 6, cooling tube 34, radiator fan 8 and exhaust grid 33, it is between connecting casing 4 and top casing 9 to connect 6 fixed mounting of cover, the figure of cooling tube 34 is a plurality of, a plurality of the equidistant setting of cooling tube 34 is being connected between casing 4 and the top casing 9, the both ends of cooling tube 34 communicate with being connected casing 4 and top casing 9 respectively, radiator fan 8 is installed to the fixed gomphosis in front of connecting cover 6, exhaust grid 33 is installed to the fixed gomphosis in the back of connecting cover 6, can carry out the cooling of burner gas, makes sulphuric acid liquefaction wherein.

And a drain pipe 7 is fixedly arranged at the bottom of one side of the connecting cover 6 and used for draining water of the cooling structure.

Rear end fixed mounting of radiator fan 8 has ring pipe 36, evenly install a plurality of atomizer 37 on the ring pipe 36, ring pipe 36 is connected with first hose 20, the end-to-end connection of first hose 20 has high pressure water pump 19, high pressure water pump 19 fixed mounting is on water tank 18, high pressure water pump 19's water inlet is connected with drinking-water pipe 40, drinking-water pipe 40 sets up inside water tank 18, has improved the radiating effect through spraying water smoke.

The water spraying assembly comprises a straight pipe 38 and a water spraying head 39, the straight pipe 38 is fixedly installed inside the top shell 9, the number of the water spraying heads 39 is a plurality of, a plurality of water spraying heads 39 are installed at the bottom of the straight pipe 38 at equal intervals, one end of the straight pipe 38 is a closed end, the other end of the straight pipe 38 is an open end, the open end is connected with one end of a second hose 22, the tail end of the second hose 22 is connected with an infusion pump 21, the infusion pump 21 is fixedly installed on the water tank 18, a water inlet of the infusion pump 21 is connected with a liquid inlet pipe 41, the liquid inlet pipe 41 is arranged inside the water tank 18, a water filling port 23 is installed at the top of the water tank 18, a sealing cover is installed on the water filling port 23, water can be sprayed for furnace gas, and sulfuric acid and partial hydrochloric acid are absorbed.

The bottom of the rectangular bottom shell 1 is fixedly embedded with an electric heating plate 35 which can be used for heating, volatilizing hydrochloric acid and reducing the proportion of the hydrochloric acid.

The cooling tube 34 is composed of a circular tube 3401 and cooling strips 3402, the number of the cooling strips 3402 is a plurality of, and the cooling strips 3402 are uniformly and fixedly arranged outside the circular tube 3401, so that the cooling area is increased, and the cooling effect is improved.

The mechanism of loosing gas includes flat casing 30, flat shell 31 and venthole 32, flat casing 31 of a plurality of evenly distributed is installed to flat casing 30's bottom fixed intercommunication, a plurality of venthole 32 has evenly been seted up on flat casing 31's surface, can be convenient for gas diffusion to the container, adopt two mechanisms of loosing gas, two containers of cooperation, the container bottom has the mechanism of lift simultaneously, carry out the lift of container, during production, keep a mechanism of loosing gas to carry out work, another mechanism of loosing gas is out of work, the hydrochloric acid concentration of the mechanism production of loosing gas of work is up to standard, close its first gate valve 26 or the second gate valve 27 that corresponds, make another mechanism of loosing gas work simultaneously, thereby realize producing incessantly.

Detailed description of the invention

The following is a specific embodiment of a heat dissipation mechanism of a production device of potassium sulfate byproduct hydrochloric acid by the Mannheim process, and the heat dissipation mechanism can be implemented independently or can be used as a key mechanism of the production device of potassium sulfate byproduct hydrochloric acid by the Mannheim process disclosed in the specific embodiment.

Mannheim method potassium sulphate by-product hydrochloric acid apparatus for producing's heat dissipation mechanism, including connecting cover 6, cooling tube 34, radiator fan 8 and exhaust grille 33, connecting cover 6 fixed mounting is between connecting casing 4 and top casing 9, the figure of cooling tube 34 is a plurality of, a plurality of the equidistant setting of cooling tube 34 is between connecting casing 4 and top casing 9, the both ends of cooling tube 34 communicate with connecting casing 4 and top casing 9 respectively, radiator fan 8 is installed to the fixed gomphosis in front of connecting cover 6, exhaust grille 33 is installed to the fixed gomphosis in the back of connecting cover 6, one side bottom fixed mounting of connecting cover 6 has drain pipe 7, radiator fan 8's rear end fixed mounting has annular tube 36, evenly install a plurality of atomizer 37 on annular tube 36, annular tube 36 is connected with first hose 20, the end connection of first hose 20 has high pressure water pump 19, high pressure water pump 19 fixed mounting is on water tank 18, high pressure water pump 19's water inlet is connected with drinking-water pipe 40, drinking-water pipe 40 sets up inside water tank 18, cooling tube 34 comprises pipe 3401 and heat dissipation 3402 pipe 3402 the number 3402, and a plurality of even fixed mounting 3402 are at a plurality of pipe 3401 and a plurality of pipe 3402.

Detailed description of the invention

The following is a specific implementation mode of the process flow of the production device of the byproduct hydrochloric acid of the potassium sulfate by the Mannheim method, and the process flow can be implemented independently and can also be applied to the production device of the byproduct hydrochloric acid of the potassium sulfate by the Mannheim method disclosed by the specific implementation mode.

The process flow comprises the following steps:

step a, adding dry potassium chloride and concentrated sulfuric acid into the center of a Mannheim furnace reaction chamber according to an equivalent proportion, fully stirring and mixing reaction materials through a rotating rake tooth, slowly moving a material bed layer from the center to the periphery, staying for 4-5 hours, fully performing thermal decomposition reaction, continuously leading generated potassium sulfate coarse materials out through a spiral material pushing cooler arranged on the periphery of the furnace, naturally cooling through a belt, screening and crushing, neutralizing stone powder, storing in an intermediate storage hopper, packaging and warehousing; the coal gas enters a combustion chamber of a Mannheim furnace for combustion, the temperature of the flue gas is 1000-1100 ℃, heat is transferred to the reaction chamber through a partition wall in a conduction and radiation mode, and the temperature of the reaction chamber is controlled to be 520-540 ℃; the smoke of the combustion chamber is discharged after reaching the standard; the generated high-temperature furnace gas mainly contains hydrogen chloride and is led out from the furnace, and the temperature is about 450 ℃;

step B, furnace gas enters the connecting shell 4 through the furnace gas inlet 5, is guided by the guide fan 11, flows upwards, is radiated through the radiating pipe 34, is blown by the radiating fan 8, is sucked by the high-pressure water pump 19 through the water pumping pipe 40, is conveyed through the first hose 20 and the annular pipe 36, is sprayed out through the atomizing nozzle 37, is sprayed on the radiating pipe 34, is matched with blowing to realize radiating and cooling, reduces the temperature of air flow to 180-240 ℃, realizes liquefaction of sulfuric acid, is sucked by the liquid feeding pipe 41 through the liquid conveying pump 21, is guided by the second hose 22, enters the straight pipe 38, is sprayed out through the water spraying head 39, so that part of hydrogen chloride gas and liquefied sulfuric acid are absorbed, fall down and enter the rectangular bottom shell 1 to be aggregated to form acid B;

c, removing sulfuric acid gas, enabling the sulfuric acid gas to enter a first conveying pipe 24 through a top cover 10, conveying the sulfuric acid gas through a three-way pipe 25, and enabling the sulfuric acid gas to enter a second conveying pipe 28 or a third conveying pipe 29, wherein two gas dispersing mechanisms are immersed in a container, water is contained in the container, the gas can be dispersed through the gas dispersing mechanisms and uniformly dispersed in the water, and high-purity industrial hydrochloric acid A is formed;

and d, the B acid enters the rectangular bottom shell 1, can be heated through the electric heating plate 35 to volatilize the inside, the heating temperature is lower than 150 ℃, hydrogen chloride gas is generated, the gas enters the top shell 9 through the driving of the air pump 16 to reduce the hydrogen chloride in the B acid, the proportion of sulfuric acid is improved, industrial hydrochloric acid with impurities can be formed, and the B acid can be used as general strong acid.

The whole production device, the heat dissipation mechanism and the process flow are improved on the basis of the existing mode of producing sulfate by Mannheim, can recycle furnace gas, can produce byproduct hydrochloric acid, can be recycled to form impurity-containing hydrochloric acid and high-purity hydrochloric acid, and has a good whole recycling effect.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (8)

1. The production device of potassium sulfate byproduct hydrochloric acid by Mannheim method is characterized in that: comprises a rectangular bottom shell (1), a connecting hopper (2), a connecting shell (4) and a top shell (9), wherein the top of the rectangular bottom shell (1) is provided with a filtering air inlet assembly, the bottom of the connecting hopper (2) is fixedly connected with the top of the rectangular bottom shell (1), the connecting hopper (2) is communicated with the rectangular bottom shell (1), the top of the connecting hopper (2) is fixedly connected with the bottom of the connecting shell (4), the connecting hopper (2) is communicated with the connecting shell (4), one side of the connecting shell (4) is fixedly provided with a furnace gas inlet (5), an opening and closing valve is arranged between the furnace gas inlet (5) and the connecting shell (4), the top of the connecting shell (4) is communicated with the bottom of the top shell (9), a heat dissipation mechanism is arranged between the connecting shell (4) and the top shell (9), a water spray assembly is arranged inside the top shell (9), the top of the rectangular bottom shell (1) is fixedly connected with one end of the connecting pipe (14), the bottom of the bottom shell (1) is communicated with the bottom shell (14), a connecting pipe (14) is arranged between the connecting pipe (14) and the rectangular bottom shell (17), and the connecting pipe (17) is connected with the air outlet of the air pump (17), and the connecting pipe (17) is connected with the air pump (17), and adapter sleeve (17) and top casing (9) intercommunication, adapter sleeve (17) are located the top of water spray subassembly, the bottom fixedly connected with mounting bracket (15) of air pump (16), mounting bracket (15) fixed mounting is at the top of rectangle drain pan (1), the top fixedly connected with overhead guard (10) of top casing (9), overhead guard (10) and top casing (9) intercommunication, the top fixed mounting of overhead guard (10) has guiding fan (11), guiding fan (11) top is connected with first conveyer pipe (24) one end, the end-to-end connection of first conveyer pipe (24) has three-way pipe (25), three-way pipe (25) still are connected with second conveyer pipe (28) and third conveyer pipe (29), the bottom of second conveyer pipe (28) with the bottom of third conveyer pipe (29) all is connected with the mechanism of loosing gas, install first gate valve (26) between second conveyer pipe (28) and three-way pipe (25), install second gate valve (27) between third conveyer pipe (29) and three-way pipe (25).

2. The apparatus for producing potassium sulfate by-product hydrochloric acid according to the Mannheim process of claim 1, wherein: the filtering air inlet assembly comprises an air inlet cover (12) and a filter (13), the bottom of the air inlet cover (12) is fixedly connected with the top of the rectangular bottom shell (1), the air inlet cover (12) is communicated with the rectangular bottom shell (1), the filter (13) is fixedly embedded and installed at the top of the air inlet cover (12), and a drain valve (3) is fixedly installed on one side of the rectangular bottom shell (1).

3. The apparatus for producing potassium sulfate byproduct hydrochloric acid according to claim 1, wherein: heat dissipation mechanism is including connecting cover (6), cooling tube (34), radiator fan (8) and exhaust grid (33), connect cover (6) fixed mounting between connecting casing (4) and top casing (9), the figure of cooling tube (34) is a plurality of, a plurality of radiator tube (34) equidistant setting is connecting between casing (4) and top casing (9), the both ends of cooling tube (34) communicate with connecting casing (4) and top casing (9) respectively, radiator fan (8) are installed to the positive fixed gomphosis of connecting cover (6), exhaust grid (33) are installed to the fixed gomphosis in the back of connecting cover (6), one side bottom fixed mounting of connecting cover (6) has drain pipe (7).

4. The apparatus for producing potassium sulfate by-product hydrochloric acid according to the Mannheim process of claim 3, wherein: the rear end fixed mounting of radiator fan (8) has annular pipe (36), evenly install a plurality of atomizer (37) on annular pipe (36), annular pipe (36) are connected with first hose (20), the end-to-end connection of first hose (20) has high-pressure water pump (19), high-pressure water pump (19) fixed mounting is on water tank (18), the water inlet of high-pressure water pump (19) is connected with drinking-water pipe (40), drinking-water pipe (40) set up inside water tank (18).

5. The apparatus for producing potassium sulfate byproduct hydrochloric acid according to claim 1, wherein: the utility model discloses a water spray assembly, including water spray assembly, straight tube (38) fixed mounting is in the inside of topshell (9), the figure of water spray assembly (39) is a plurality of, and equidistant the installing in the bottom of straight tube (38) of a plurality of water spray assembly (39), straight tube (38) one end is the closing end, the other end of straight tube (38) is the open end, and this open end is connected with second hose (22) one end, the end-to-end connection of second hose (22) has transfer pump (21), transfer pump (21) fixed mounting is on water tank (18), the water inlet of transfer pump (21) is connected with feed liquor pipe (41), feed liquor pipe (41) set up inside water tank (18), filler (23) are installed at the top of water tank (18), install the lid of sealing on filler (23).

6. The apparatus for producing potassium sulfate byproduct hydrochloric acid according to claim 1, wherein: and an electric heating plate (35) is fixedly embedded at the bottom of the rectangular bottom shell (1).

7. The apparatus for producing potassium sulfate by-product hydrochloric acid according to the Mannheim process of claim 3, wherein: the radiating pipe (34) is composed of a circular pipe (3401) and radiating strips (3402), the number of the radiating strips (3402) is a plurality of, and the radiating strips (3402) are uniformly and fixedly arranged outside the circular pipe (3401).

8. The apparatus for producing potassium sulfate byproduct hydrochloric acid according to claim 1, wherein: the air dispersing mechanism comprises a flat shell (30), a flat shell (31) and air outlet holes (32), the flat shell (31) which is uniformly distributed is fixedly communicated with the bottom of the flat shell (30), and the surface of the flat shell (31) is uniformly provided with the air outlet holes (32).

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