WO2023191194A1 - Apparatus for preparing ammonium sulfate by using combustion exhaust gas - Google Patents

Abstract

The present invention relates to a method for preparing ammonium sulfate by using nitrogen oxide and sulfur oxide in combustion exhaust gas, and comprises: an introduction flow path through which the combustion exhaust gas is introduced; a first electrode plate arranged at a discharge end of the introduction flow path so that the combustion exhaust gas passes therethrough; an electrolyte part which is arranged on a side surface of the first electrode plate and which accommodates an electrolyte solution; a second electrode plate which is arranged to be spaced from the first electrode plate with the electrolyte part therebetween and which allows gas discharged from the electrolyte part to pass therethrough; a discharge flow path through which gas having passed through the second electrode plate is discharged; a power source unit for applying a voltage to the first electrode plate and the second electrode plate; and a control unit for controlling the power source unit, wherein the power source unit applies the voltage so that the potential difference between the first electrode plate and the second electrode plate is 1.2 V to 1.8 V.

Description

Ammonium sulfate manufacturing device using combustion exhaust gas

The present invention relates to a device for producing ammonium sulfate from combustion exhaust gas.

Patent Document 001 is an automated cleaning device for an electric precipitator for removing harmful substances from exhaust gases, and includes an electrostatic precipitator (10) in which a plurality of dust collection filters (20) are installed in multiple stages at regular intervals, and the electrostatic precipitator (10) Between the cleaning liquid main pipe 110, which is installed on one side and receives the cleaning liquid from an external pump, and each dust collection filter body 20, which is installed in multiple branches in the cross direction from the washing liquid main pipe 110 and arranged in multiple stages at regular intervals. A dust collector internal branch pipe 120 branched to one side, one branch or more installed in a direction crossing each of the dust collector internal branch pipes 120, and extending deep into the interior via one central side of the dust collection filter body 20. A rotary joint (141) installed at one or more points of the inner central supply pipe (130) and the inner central supply pipe (130) of the dust collector, connects horizontal pipes on both sides in a cross direction, and enables supply of cleaning solution even when one side of the pipe rotates. ), which includes a pipe cross-connection means 140, is coupled to the end of the pipe cross-connection means 140, has a left injection pipe 310 and a right injection pipe 310′ on both sides and rotates about the center. A cleaning liquid rotary spray pipe 300 sprays the cleaning liquid toward the dust collection filter body 20 while spraying the washing liquid towards the dust collection filter body 20, and is formed on the left and right spray pipes 310 and 310' of the washing liquid rotary spray pipe 300, respectively, and a constant distance is maintained. It is composed of a plurality of left and right spray nozzle holes (311, 311') each drilled, and the left and right spray nozzle holes (311, 311') are located at the lower part of the cleaning liquid rotary spray pipe (300) with respect to its longitudinal center. Or, it is formed toward the top, but is inclined at an angle (∝) in the range of 10° to 30°, so that the entire cleaning liquid rotary spray pipe 300 is automatically rotated when the washing liquid is sprayed, and the left and right spray nozzle holes ( 311,311′) is formed as a long hole having an elongated shape due to the length (L) being large compared to the width (W), and the long hole is a rectangular long hole with both sides angled or a round long hole with round shapes on both sides, and the left and right spray nozzle holes (311,311') disclose an automated cleaning device for an electrostatic precipitator for removing harmful substances from exhaust gases, which is characterized in that the width (W) is 1 mm to 2 mm and the length (L) is 8 mm to 20 mm.

Patent Document 002 is an exhaust gas purification agent and an exhaust gas purification method using the same, and includes a step of preparing a harmful gas absorbent at a concentration of 0.1 to 1 g/L by adding a CKD (Cement Kiln Dust) exhaust gas purification agent to water and stirring it, and a bubble reactor. Including the step of injecting the harmful gas absorbent and the exhaust gas into contact with the harmful gas absorbent and the exhaust gas, so that the SO2 conversion rate in the exhaust gas is 95% or more under conditions of pH less than 3 after 50 minutes of contact. A method for purifying exhaust gas is disclosed.

Patent document 003 is a fuel saving and exhaust gas reduction device and a manufacturing method thereof, and is a fuel saving and exhaust gas reduction device that is detachably installed on the outer peripheral surface of the fuel supply pipe 30 to reduce fuel supply and reduce exhaust gas emissions, A pair consisting of 40 to 70% by weight of heat-resistant plastic including ultra-heat-resistant engineering plastic and 30 to 60% by weight of ultra stone powder, arranged to face each other, and detachably installed on the outer peripheral surface of the fuel supply pipe (30). On the outer peripheral surface of the arc-shaped structures (110) (210) (310) (410) (510) and the fuel supply pipe (30), the pair of arc-shaped structures (110) (210) (310) (410) (510) It includes fastening means (20) (120) for fastening to each other, and an arc-shaped neodymium insertion hole (H) is formed on the inner peripheral surface of the arc-shaped structure (110) (210) (310) (410) (510), A fuel saving and exhaust gas reduction device is disclosed, characterized in that an arc-shaped Neodymium (Nd) 130 is installed in an arc-shaped Neodymium insertion hole (H).

Patent Document 004 is an induction heating high-temperature pyrolysis device with an exhaust gas purification function, a skeletal structure formed in a multi-level shelf structure with a plurality of wheel ball casters installed on the lower bottom, and a skeletal structure installed on the upper shelf of the skeletal structure. In this state, it is converted into Joule heat by eddy currents (eddy currents) generated by the induction heating alternating electromagnetic field radiated from the working coil assembly, and the inside is maintained in a state of induction heating within a set ultra-high temperature range, and various wastes input inside are kept at ultra-high temperatures. Induction having a carbonization furnace assembly that thermally decomposes, the upper surface of which is fixed to the lower part of the upper shelf of the skeletal structure at a certain distance from the bottom of the carbonization furnace assembly, and a mid- and low-frequency band (X kHz) output from the control unit. As the heating power is passed through the tubular working coil, an electromagnetic field is generated so that the heating object of the carbonization furnace assembly is heated, and the inside of the carbonization furnace is heated to a set temperature by the heat generated by the induction heating, and the skeletal structure A control unit that controls the cooling of the working coil assembly as well as the operation of various electrical components when installed on the middle shelf of the skeletal structure, and a control unit that controls the operation of various electrical components when installed on the middle shelf of the skeletal structure, It consists of an exhaust gas purifier that cools the heat of harmful exhaust gas below a set temperature, purifies it, and discharges it to the outside. The carbonization furnace assembly has a square box shape with an open top and is placed at the innermost part. An inner box of a carbonization furnace that maintains the interior heated to a set temperature range by a mid- and low-frequency alternating electromagnetic field generated when induction heating power is applied from a tubular working coil and high-temperature pyrolysis of various wastes introduced therein; It has a form in which a plurality of exhaust gas intake pipes are installed vertically through the upper part of the duct body in the shape of a hollow square frame with an exhaust gas discharge pipe on the bottom of one side, and various wastes are discharged at ultra-high temperature within the inner box of the carbonization furnace. An exhaust gas preheating duct that collects the exhaust gas generated during the pyrolysis process and delivers it to the exhaust gas purifier while simultaneously preheating the inner box of the carbonization furnace, and is installed at the bottom of the carbonization furnace lower plate of the inner box of the carbonization furnace and electrically It is equipped with an insulation function and a mica plate on the lower side of the carbonization furnace that primarily prevents the heat generated in the inner box of the carbonization furnace from being transferred directly to the lower side where the working coil assembly is installed, and a plurality of sensor insertion holes in the front part. A refractory and heat-resistant ceramic insulating plate that secondarily prevents heat generated in the inner box of the carbonization furnace from being transmitted to the lower side where the working coil assembly is installed when installed at the bottom of the mica plate on the lower side of the furnace, and a refractory and heat-resistant ceramic insulating plate provided on the refractory and heat-resistant ceramic insulating plate. A plurality of temperature detection sensors, each installed in the sensor insertion hole, detect the heating temperature of the heating object of the carbonization furnace assembly in real time for each heating section and transmit it to the control unit, the outer surface is closely adhered to the inside of the upper shelf of the skeletal structure, and the inner surface is carbonized. In the outer case of the carbonization furnace, which is spaced a certain distance from the front, rear, left, and right sides of the furnace inner box and the exhaust gas preheating duct, and in the space formed in the inner surface of the outer case of the carbonization furnace and the inner box of the carbonization furnace and the exhaust gas preheating duct. Manually or It has a lid assembly that is installed to automatically open and close, and is installed on the upper part of the inner box of the carbonization furnace and the outer case of the carbonization furnace, and provides double airtightness between the upper surface of the carbonization furnace assembly and the bottom of the lid assembly. Primary and secondary airtight maintenance means for maintaining the lid assembly, an electric winch that opens and closes the lid assembly in response to an output signal from the control unit while fixed to the rear bottom of the upper shelf of the skeletal structure, and an upper shelf of the skeletal structure A roller assembly that supports the steel wire of the electric winch while installed in the middle of a light metal profile or metal angle or pipe installed in the horizontal direction at the rear upper part, a light metal profile or metal angle or pipe at the top of the skeletal structure, and the lid assembly. Induction heating with an exhaust gas purification function, which is composed of a door sealing latch assembly that not only applies pressure to the closed lid assembly when installed at predetermined intervals along the periphery of the upper surface of the door, but also maintains the locked state of the lid assembly. A high-temperature pyrolysis device is being disclosed.

(Patent Document 1) KR 10-2352941 B1 (Announcement date 2022.01.19.)

(Patent Document 2) KR 10-2349120 B1 (Announcement date 2022.01.12)

(Patent Document 3) KR 10-2344332 B1 (Announcement date 2021.12.27.)

(Patent Document 4) KR 10-2330682 B1 (Announcement date 2021.11.24)

The present invention relates to an apparatus for producing ammonium sulfate using nitrogen oxides and sulfur oxides in combustion exhaust gas.

The apparatus for manufacturing ammonium sulfate using combustion exhaust gas according to the present invention to solve the problems of the prior art includes an inflow passage through which combustion exhaust gas flows, a first electrode plate disposed at the discharge end of the inflow passage and through which the combustion exhaust gas passes; an electrolyte portion disposed on a side of the first electrode plate and containing an electrolyte solution; a second electrode plate disposed between the first electrode plate and the electrolyte portion and through which gas discharged from the electrolyte portion permeates; It includes an exhaust flow path through which the gas transmitted from the second electrode plate is discharged, a power supply unit that applies voltage to the first electrode plate and the second electrode plate, and a control unit that controls the power supply unit, wherein the power supply unit is connected to the first electrode plate. A voltage is applied so that the potential difference between the second electrode plate and the second electrode plate is 1.2 to 1.8 V.

The present invention relates to an apparatus for producing ammonium sulfate using combustion exhaust gas in order to solve the problems of the prior art, wherein the first electrode plate includes a porous plate and a coating layer coated on the surface of the porous plate.

The present invention relates to an apparatus for producing ammonium sulfate using combustion exhaust gas in order to solve the problems of the prior art, wherein the second electrode plate includes a porous plate and a coating layer coated on the surface of the porous plate.

The present invention relates to an apparatus for producing ammonium sulfate using combustion exhaust gas to solve the problems of the prior art, and the porous plate is made of carbon, iron, gold, silver, copper, nickel, titanium, cobalt, platinum, rhodium, and iridium. , palladium, and at least one of the oxides of these metals.

The present invention relates to an apparatus for producing ammonium sulfate using combustion exhaust gas in order to solve the problems of the prior art, and the coating layer is composed of at least one of Teflon and ionic polymer.

The present invention relates to an apparatus for producing ammonium sulfate using combustion exhaust gas to solve the problems of the prior art, comprising a supply unit disposed on the inflow passage side to supply the combustion exhaust gas to the inflow passage side, and a supply portion disposed on the discharge passage side. It includes a discharge unit that discharges the gas in the discharge passage to the outside, and the supply unit and the discharge unit are controlled by the control unit.

The present invention relates to an apparatus for producing ammonium sulfate using combustion exhaust gas in order to solve the problems of the prior art, and the first device is installed in the inflow passage and senses the flow rate or supply pressure of the combustion exhaust gas supplied through the inflow passage. It includes a sensor and a second sensor installed in the discharge passage to sense the flow rate or discharge pressure of the gas discharged through the discharge passage, and the control unit detects the sensor according to the sensing values of each of the first sensor and the second sensor. The supply unit and the discharge unit are controlled.

The method for producing ammonium sulfate using combustion exhaust gas according to the present invention can treat combustion exhaust gas and generate ammonia even without an ion separation membrane, and the product can be produced according to the potential difference between the appropriate first electrode plate 200 and the second electrode plate 400. It can change sulfur oxides (SOx) and nitrogen oxides (NOx), which are types of harmful combustion exhaust gases, into useful resources, and can be operated under room temperature/normal pressure conditions, and can be driven even with low concentration reactants. It works.

1 is a schematic diagram of an ammonium sulfate production device using combustion exhaust gas according to an embodiment of the present invention;

Figure 2 is a schematic diagram of an ammonium sulfate production device using combustion exhaust gas according to another embodiment of the present invention;

Figure 3 is a graph of the conversion rate of sulfate ions and ammonium ions according to the potential difference between the first and second electrode plates of the present invention.

Hereinafter, the most preferred embodiments of the present invention will be described in detail in order to enable those skilled in the art to easily practice the present invention.

Numbers cited in the examples below are not limited to the objects of citation and can be applied to all examples. An object that has the same purpose and effect as the configuration presented in the examples is an equivalent replacement object. The high-level concept presented in the examples includes low-level concept objects that are not described.

(Example 1-1) The apparatus for producing ammonium sulfate using combustion exhaust gas according to the present invention includes an inflow passage 100 through which combustion exhaust gas flows, and a first electrode plate disposed at the discharge end of the inflow passage and through which the combustion exhaust gas passes ( 200), an electrolyte portion 300 disposed on the side of the first electrode plate and containing an electrolyte solution, disposed between the first electrode plate and the electrolyte portion, and through which gas discharged from the electrolyte portion permeates. A second electrode plate 400, an exhaust passage 500 through which gas transmitted from the second electrode plate is discharged, a power supply unit (not shown) that applies voltage to the first electrode plate and the second electrode plate, and the power supply unit. It includes a control unit 800 that controls, wherein the power unit applies a voltage so that the potential difference between the first electrode plate and the second electrode plate is 1.2 to 1.8 V.

The inflow passage 100 may be formed of a material that is rigid enough to withstand the pressure of the incoming combustion exhaust gas, has heat resistance that can withstand a relatively high temperature, and is less reactive with compounds contained in the combustion exhaust gas. there is.

Since the first electrode plate 200 allows gas to pass through, it may be formed of a porous material. A predetermined voltage is applied to the first electrode plate 200 to induce an oxidation reaction of sulfur oxides (SOx) contained in combustion exhaust gas. When an oxidation reaction of sulfur oxides occurs in the combustion exhaust gas, sulfate ions are generated and dissolved in the electrolyte solution contained in the electrolyte unit 300, which will be described later. The chemical formula of the oxidation reaction occurring in the first electrode plate 200 is as follows.

That is, the first electrode plate 200 is a part that ionizes sulfur oxide (SOx) to generate sulfuric acid ions. At this time, the first electrode plate 200 is an anode and can be called a positive electrode.

The electrolyte of the electrolyte solution accommodated in the electrolyte unit 300 is a material that is split into ions in an aqueous solution state and through which current flows. The electrolyte solution contained in the electrolyte unit 300 may be prevented from being discharged to the outside through the first electrode plate 200, the second electrode plate 400, and the outer wall.

The second electrode plate 400 forms a pair with the first electrode plate 200, and the gas located in the electrolyte solution of the electrolyte unit 300 is transmitted. A predetermined voltage is also applied to the second electrode plate 400, which induces a reduction reaction of nitrogen oxides (NOx) contained in the gas. The chemical formula of the reduction reaction occurring in the second electrode plate 400 is as follows.

When a reduction reaction of nitrogen oxides (NOx) occurs in gas, ammonium ions are generated and dissolved in the electrolyte solution, and ultimately ammonium sulfate can be produced through sulfate ions and ammonium ions.

However, in the present invention as described above, it is preferable if only sulfate ions are generated in the first electrode plate 200, but nitrogen oxides (NOx) can also be oxidized in the first electrode plate 200, and the second electrode plate 400 ) Sulfur oxides (SOx) can also be reduced. In this case, the production efficiency of ammonia to be produced in the present invention decreases, so it is important to ensure that only reduction of sulfur oxides occurs in the first electrode plate 200 and only oxidation of nitrogen oxides occurs in the second electrode plate 400. do.

When experimenting with this, as shown in the figure, 1.1 ~ 1.3V vs. In RHE, it can be confirmed that more than 90% of sulfur oxides have been converted to sulfate ions, -0.1 ~ -0.5V vs. In RHE, it was confirmed that more than 70% of nitrogen oxides were converted to ammonium ions. At this time, V vs. negative value. The RHE value means that the potential of the second electrode plate 400 is higher than the potential of the first electrode plate 200, and V vs. The RHE value means that the potential of the first electrode plate 200 is higher than the potential of the second electrode plate 400. According to these experimental results, in this embodiment, the control unit 800 determines that the potential difference between the first electrode plate 200 and the second electrode plate 400 is 1.2 ~ 1.8V vs. By controlling the power supply so that RHE occurs, only the oxidation reaction of sulfur oxides occurs in the first electrode plate 200, and only the reduction reaction of nitrogen oxides occurs in the second electrode plate 400, thereby causing ammonium sulfate Manufacturing efficiency can be increased. Additionally, there may be an embodiment in which only sulfate ions or only ammonia (ammonium ions) are produced by appropriately adjusting the voltage as needed.

In this embodiment, through the above-described configurations, combustion exhaust gas can be treated and ammonia can be generated without an ion separation membrane, and the product can be changed according to the potential difference between the appropriate first electrode plate 200 and the second electrode plate 400. It can convert sulfur oxides (SOx) and nitrogen oxides (NOx), which are types of harmful combustion exhaust gases, into useful resources, and can be operated even under room temperature/normal pressure conditions, with the effect of being able to operate even with low concentration reactants. there is.

In this embodiment, the control unit 800 is a type of control device that controls the power unit and includes a central processing unit (CPU) like a computer. It may be implemented as an electronic device or an electronic device including an electronic device.

(Example 1-2) In the apparatus for producing ammonium sulfate using combustion exhaust gas according to the present invention (Example 1-1), the first electrode plate and the second electrode plate include the porous plates 210 and 410 and the It includes coating layers 220 and 420 coated on the surface of the porous plate.

Here, the porous plates 210 and 410 refer to parts that serve as electrodes by applying voltage from the power source, and have T to serve as electrodes. That is, both porous plates 210 and 410 can be connected to the power supply. In the drawing, the coating layers 220 and 420 are shown as being coated only on the electrolyte unit 300 side, but in the present invention, the portion on which the coating layers 220 and 420 are coated is applied to only one side of the electrolyte unit 300 among the electrode plates. It is not limited to being coated, and there may be embodiments such as coating the entire electrode plate. The coating layers 220 and 420 can serve as a catalyst that allows oxidation/reduction reactions to occur more easily while providing waterproofing to prevent the electrolyte solution from penetrating the electrode plate.

(Example 1-3) In the apparatus for producing ammonium sulfate using combustion exhaust gas according to the present invention (Example 1-2), the porous plate is made of carbon, iron, gold, silver, copper, nickel, titanium, cobalt, It is composed of at least one of platinum, rhodium, iridium, palladium, and oxides of these metals, and the coating layers 220 and 420 are composed of at least one of Teflon and ionic polymer.

The materials of the porous plates 210 and 410 and the coating layers 220 and 420 included in each of the first and second electrode plates 200 and 400 may be appropriately selected taking into account various factors. Matters to be considered at this time may include cost, gas permeability, and catalyst efficiency.

(Example 1-4) In the apparatus for producing ammonium sulfate using combustion exhaust gas according to the present invention (Example 1-3), the porous plate and coating layer included in each of the first electrode plate and the second electrode plate are electrodes. Each plate may be different.

This is because the reactions occurring in the first electrode plate 200 and the second electrode plate 400 are different. More specifically, this is because an oxidation reaction of sulfur oxides occurs in the first electrode plate 200, and a reduction reaction of nitrogen oxides occurs in the second electrode plate 400. Because of this difference between the oxidation reaction and the reduction reaction, a material that allows the oxidation reaction to occur more easily is selected for the first electrode plate 200, and a material that allows the reduction reaction to occur more easily is selected for the second electrode plate 400. Thus, the production efficiency of ammonium sulfate can be improved. However, there may also be an embodiment in which the first electrode plate 200 and the second electrode plate 400 are made of the same material.

(Example 2-1) In (Example 1-1), the apparatus for producing ammonium sulfate using combustion exhaust gas according to the present invention is disposed on the side of the inflow passage 100 and directs the combustion exhaust gas toward the inflow passage 100. It includes a supply unit 600 for supplying water and a discharge unit 700 disposed on the side of the discharge passage 500 to discharge the gas in the discharge passage 500 to the outside, wherein the supply unit 600 and the discharge unit 700 ) is controlled by the control unit 800.

The supply unit 600 and the discharge unit 700 may be implemented as a device that allows gas to be introduced and discharged, such as a kind of impeller. When the supply unit 600 and the discharge unit 700 are implemented as a device such as an impeller, the efficiency of the ammonium sulfate production device according to the present invention may vary depending on the rotation speed of the supply unit 600 and the discharge unit 700. Therefore, the control unit can control the rotation speeds of the supply unit 600 and the discharge unit 700 in conjunction with each other.

(Example 2-2) In (Example 2-1), the apparatus for producing ammonium sulfate using combustion exhaust gas of the present invention is installed in the inflow passage 100 and supplies the combustion exhaust gas through the inflow passage 100. A first sensor 910 that senses the flow rate or supply pressure of gas and a second sensor 920 installed in the discharge passage 500 to sense the flow rate or discharge pressure of gas discharged through the discharge passage 500. It includes, and the control unit 800 controls the supply unit 600 and the discharge unit 700 according to the sensing values of the first sensor 910 and the second sensor 920, respectively.

The first sensor 910 and the second sensor 920 may be implemented as a pressure sensor or a flow sensor. The first sensor 910 and the second sensor 920 may be connected to the control unit 800 in a wired or wireless manner to transmit sensing values to the control unit 800. The sensing values of each of the first sensor 910 and the second sensor 920 can more accurately sense the flow rate of incoming combustion exhaust gas or discharged gas than the rotational speed of the supply unit 600 and discharge unit 700 described above. Since it is a sensing value, there is an effect of controlling the ammonium sulfate production device according to the present invention more accurately and efficiently.

The present invention is not limited to the above-described embodiments, and the scope of application is diverse. Of course, various modifications and implementations are possible without departing from the gist of the present invention as claimed in the claims.

100: Inflow Euro

200: first electrode plate

210, 410: porous plate

220, 420: Coating layer

300: Electrolyte unit

400: Second electrode plate

500: Discharge flow path

600: Supply department

700: Discharge unit

800: Control unit

910: first sensor

920: Second sensor

Claims (7)

1. An inlet flow path through which combustion exhaust gas flows;

   a first electrode plate disposed at the discharge end of the inlet flow path through which the combustion exhaust gas passes;

   an electrolyte portion disposed on a side of the first electrode plate and containing an electrolyte solution;

   a second electrode plate disposed between the first electrode plate and the electrolyte portion and through which gas discharged from the electrolyte portion passes;

   an exhaust passage through which gas transmitted from the second electrode plate is discharged;

   a power supply unit that applies voltage to the first electrode plate and the second electrode plate; and

   a control unit that controls the power unit;

   Including,

   The power supply unit is an ammonium sulfate manufacturing device using combustion exhaust gas that applies a voltage so that the potential difference between the first electrode plate and the second electrode plate is 1.2 to 1.8V.
2. According to paragraph 1,

   The first electrode plate is,

   porous plate; and

   A coating layer coated on the surface of the porous plate;

   Ammonium sulfate manufacturing device using combustion exhaust gas containing.
3. According to paragraph 1,

   The second electrode plate is,

   porous plate; and

   A coating layer coated on the surface of the porous plate;

   Ammonium sulfate manufacturing device using combustion exhaust gas containing.
4. According to paragraph 2 or 3,

   The porous plate,

   A device for producing ammonium sulfate using combustion exhaust gas composed of at least one of carbon, iron, gold, silver, copper, nickel, titanium, cobalt, platinum, rhodium, iridium, palladium, and oxides of these metals.
5. According to paragraph 2 or 3,

   The coating layer is,

   A device for producing ammonium sulfate using combustion exhaust gas composed of at least one of Teflon and ionic polymer.
6. According to paragraph 1,

   a supply unit disposed on the inlet flow path side to supply the combustion exhaust gas to the inlet flow path side; and

   a discharge unit disposed on the discharge passage side to discharge gas from the discharge passage to the outside;

   Including,

   An apparatus for producing ammonium sulfate using combustion exhaust gas, wherein the supply unit and the discharge unit are controlled by the control unit.
7. According to clause 6,

   A first sensor installed in the inlet flow path to sense the flow rate or supply pressure of the combustion exhaust gas supplied through the inlet flow path; and

   a second sensor installed in the discharge passage to sense the flow rate or discharge pressure of gas discharged through the discharge passage;

   Including,

   The control unit,

   An ammonium sulfate manufacturing device using combustion exhaust gas that controls the supply unit and the discharge unit according to the sensing values of each of the first sensor and the second sensor.

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