Sulfurous acid preparation system formed by workshop process water vacuum absorption unit

Abstract

The invention relates to the technical field of sulfurous acid preparation, in particular to a sulfurous acid preparation system formed by a workshop process water vacuum absorption unit, which is characterized in that firstly, a water ejector matched with the vacuum absorption unit is changed into vertical installation so as to improve the working efficiency; and the efficiency loss caused by high protein viscosity in the process water is effectively made up. Secondly, a gas-liquid separation part of a circulating storage tank matched with the vacuum absorption unit is added, so that bubbles in liquid are separated out, and the working requirements of a water ejector matched with the vacuum absorption unit and a circulating water pump matched with the vacuum absorption unit are met; comprising a sulfur combustion furnace, a sulfur storage box, a primary absorption tower, a secondary absorption tower, a vacuum absorption unit matched conveying water pump, a vacuum absorption unit matched circulating storage tank, a vacuum absorption unit matched circulating water pump and a vacuum absorption unit matched water ejector.

Description

Technical Field

[0001] The invention relates to the technical field of sulfurous acid preparation, in particular to a sulfurous acid preparation system formed by utilizing a workshop process water vacuum absorption unit. Background Art

[0002] For some large water users, such as the starch industry, water reuse is an environmental protection measure. Process water cannot be used as the working medium of the horizontal vacuum absorption unit because it contains protein. The reason is that the presence of protein will significantly affect the basic physical properties of water, especially its foaming and viscosity, which are directly related to the efficiency and stability of the water ejector of the vacuum absorption unit. In the operating mechanism of the water ejector of the vacuum absorption unit, too much foam will seriously hinder the smoothness of the water flow, resulting in low injection efficiency. It may even cause air blockage in the circulating water pump of the vacuum absorption unit, affecting the normal operation of the equipment. Summary of the invention

[0003] 1. Technical issues to be solved

[0004] In view of the shortcomings of the prior art, the present invention provides a sulfurous acid preparation system using a workshop process water vacuum absorption unit. First, the water ejector of the vacuum absorption unit is changed to a vertical installation to improve its working efficiency, which effectively compensates for the efficiency loss caused by the high viscosity of the process water containing protein. Second, a gas-liquid separation component of the circulating storage tank supporting the vacuum absorption unit is added to separate the bubbles in the liquid to meet the working requirements of the water ejector supporting the vacuum absorption unit and the circulating water pump supporting the vacuum absorption unit, thereby enhancing the practicality of the sulfurous acid preparation system using the workshop process water vacuum absorption unit.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a sulfurous acid preparation system using a workshop process water vacuum absorption unit, comprising a sulfur burning furnace, a sulfur storage box, a primary absorption tower, a secondary absorption tower, a vacuum absorption unit supporting a delivery water pump, a vacuum absorption unit supporting a circulating storage tank, a vacuum absorption unit supporting a circulating water pump and a vacuum absorption unit supporting a water ejector, wherein the furnace gas outlet at the top of the sulfur burning furnace is connected to the right side area of ​​the bottom of the corresponding primary absorption tower through a pipeline, the corresponding sulfur storage box is connected to the corresponding sulfur burning furnace feed port, the bottom end of the vacuum absorption unit supporting a water ejector is connected to the left side area of ​​the top end of the corresponding vacuum absorption unit supporting a circulating storage tank, and the top end of the vacuum absorption unit supporting a water ejector is connected to the corresponding vacuum absorption unit supporting a water ejector through a pipeline. One side of the circulating water pump supporting the unit is connected, the top area of ​​the right end of the water ejector supporting the vacuum absorption unit is connected to the middle of the top of the first-level absorption tower through a pipeline, one side of the circulating water pump supporting the vacuum absorption unit is connected to the bottom area of ​​the left end of the corresponding circulating storage tank supporting the vacuum absorption unit, the middle of the top of the circulating storage tank supporting the vacuum absorption unit is connected to the right bottom area of ​​the corresponding secondary absorption tower through a pipeline, one side of the delivery water pump supporting the vacuum absorption unit is connected to the right bottom area of ​​the circulating storage tank supporting the vacuum absorption unit, one side of the delivery water pump supporting the vacuum absorption unit is connected to the right area of ​​the top of the first-level absorption tower through a pipeline, and the top area of ​​the left end of the circulating storage tank supporting the vacuum absorption unit is connected to the bottom area of ​​the left end of the corresponding secondary absorption tower through a pipeline.

[0007] Furthermore, the outlet of the bottom area on the left side of the absorption tower is connected to the corresponding sulfite storage tank through a pipeline.

[0008] Furthermore, it also includes a regulating valve and a flow meter. The acid-making water system is connected to the right area of ​​the top of the corresponding secondary absorption tower through a pipeline, and the flow meter and the regulating valve are sequentially arranged on the pipeline.

[0009] Furthermore, it also includes a control cabinet, which is controlled and connected with the corresponding sulfur burning furnace, sulfur storage box, primary absorption tower, secondary absorption tower, vacuum absorption unit supporting water pump, vacuum absorption unit supporting circulation storage tank, vacuum absorption unit supporting circulation water pump, vacuum absorption unit supporting water ejector, regulating valve and flow meter.

[0010] (III) Beneficial effects

[0011] Compared with the prior art, the present invention provides a sulfurous acid preparation system using a workshop process water vacuum absorption unit, which has the following beneficial effects:

[0012] The sulfite preparation system using the workshop process water vacuum absorption unit is composed of the following: 1. First, the water ejector of the vacuum absorption unit is changed to a vertical installation to improve its working efficiency, which effectively compensates for the efficiency loss caused by the high viscosity of the process water containing protein. Second, the gas-liquid separation component of the circulating storage tank supporting the vacuum absorption unit is added to separate the bubbles in the liquid to meet the working requirements of the water ejector supporting the vacuum absorption unit and the circulating water pump supporting the vacuum absorption unit. After these two major improvements, the effect is obvious, so that the process water can be used as both a working medium and an absorption medium for preparing sulfite, and no longer consumes several cubic meters of water per hour, which improves the economic benefits for customers and reduces the pressure of water use and environmental protection. The field operation experience of the equipment has proved that the sulfite preparation system composed of the vacuum absorption unit containing protein process water has stable and reliable operation and has achieved the expected effect of energy saving and water saving design; 2. In the whole process, the water ejector supporting the vacuum absorption unit is one of the important components. It can not only make the sulfur dioxide molecules and water molecules collide and contact violently, but also greatly increase the effect of sulfur dioxide being absorbed by water. It is also the power source of the entire gas circuit; 3. The liquid circuit adopts the countercurrent washing absorption method. The countercurrent washing absorption technology is undoubtedly a revolutionary innovation. It not only greatly improves the efficiency of resource utilization, but also effectively reduces environmental pollution. It is an important promoter for achieving green production and sustainable development; through a workshop process water vacuum absorption unit to form a sulfurous acid preparation system, one is to change the water ejector of the vacuum absorption unit to a vertical installation to improve its working efficiency, effectively making up for the efficiency loss caused by the high viscosity of the process water containing protein. The second is to add a gas-liquid separation component to the circulating storage tank of the vacuum absorption unit to separate the bubbles in the liquid to meet the working requirements of the water ejector and circulating water pump of the vacuum absorption unit, thereby enhancing practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a process flow diagram of a single sulfur burning furnace and a sulfur storage box in a sulfurous acid preparation system using a workshop process water vacuum absorption unit according to the present invention;

[0014] Figure 2 This is a process flow diagram of a double sulfur burning furnace and a sulfur storage tank in a sulfurous acid preparation system using a workshop process water vacuum absorption unit.

[0015] In the figure: 1. Sulfur burning furnace; 2. Sulfur storage box; 3. Primary absorption tower; 4. Secondary absorption tower; 5. Regulating valve; 6. Flow meter; 7. Control cabinet; 8. Water delivery pump for vacuum absorption unit; 9. Circulating storage tank for vacuum absorption unit; 10. Circulating water pump for vacuum absorption unit; 11. Water ejector for vacuum absorption unit. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] Example 1: Please refer to Figure 1 Process flow chart, a sulfurous acid preparation system using workshop process water vacuum absorption unit, including sulfur burning furnace 1, sulfur storage box 2, primary absorption tower 3, secondary absorption tower 4, vacuum absorption unit supporting water pump 8, vacuum absorption unit supporting circulation storage tank 9, vacuum absorption unit supporting circulation water pump 10 and vacuum absorption unit supporting water ejector 11, the furnace gas outlet at the top of the sulfur burning furnace 1 is connected to the right area of ​​the bottom of the corresponding primary absorption tower 3 through a pipeline, the corresponding sulfur storage box 2 is connected to the corresponding sulfur burning furnace 1 feed port, the bottom end of the vacuum absorption unit supporting water ejector 11 is connected to the left area of ​​the top of the corresponding vacuum absorption unit supporting circulation storage tank 9, the top of the vacuum absorption unit supporting water ejector 11 is connected to the corresponding vacuum absorption unit supporting circulation pump 10 through a pipeline. One side of the circulating water pump 10 is connected, the top area of ​​the right end of the water ejector 11 of the vacuum absorption unit is connected to the middle of the top of the first-level absorption tower 3 through a pipeline, one side of the circulating water pump 10 of the vacuum absorption unit is connected to the bottom area of ​​the left end of the corresponding circulating storage tank 9 of the vacuum absorption unit, the middle of the top of the circulating storage tank 9 of the vacuum absorption unit is connected to the right bottom area of ​​the corresponding secondary absorption tower 4 through a pipeline, one side of the supporting delivery water pump 8 of the vacuum absorption unit is connected to the right bottom area of ​​the circulating storage tank 9 of the vacuum absorption unit, one side of the supporting delivery water pump 8 of the vacuum absorption unit is connected to the right area of ​​the top of the first-level absorption tower 3 through a pipeline, and the top area of ​​the left end of the circulating storage tank 9 of the vacuum absorption unit is connected to the bottom area of ​​the left end of the corresponding secondary absorption tower 4 through a pipeline.

[0018] When the equipment is in use, the number of the sulfur burning furnace 1 and the sulfur storage box 2 is set as one group. The raw sulfur in the sulfur storage box 2 enters the sulfur burning furnace 1 quantitatively through the scrambler under the instruction of the control cabinet 7, burns in the sulfur burning furnace 1 and generates sulfur dioxide mixed furnace gas, which is discharged from the tail of the sulfur burning furnace 1 into the lower part of the primary absorption tower 3, meets the water flowing countercurrently in the absorption tower, and the water absorbs sulfur dioxide to generate sulfurous acid, which is discharged from the lower outlet of the absorption tower to the sulfurous acid storage tank.

[0019] The remaining mixed furnace gas, driven by the water ejector 11 of the vacuum absorption unit, continues to exit at the top of the absorption tower and enters the air inlet of the water ejector 11 of the vacuum absorption unit. The working principle of the water ejector 11 of the vacuum absorption unit is exquisite and efficient. It uses the negative pressure zone formed by high-speed water flow to forcefully suck in the sulfur-containing furnace gas and complete the gas-liquid mixing in an instant. In this process, sulfur dioxide molecules and water molecules collide and contact violently, greatly increasing the chance of sulfur dioxide being absorbed by water. This is not just a simple physical process, but also a perfect combination of chemical absorption and physical dissolution, which ensures the efficient removal rate or efficient absorption rate of sulfur dioxide. Therefore, it is a process of secondary enhanced absorption of sulfur dioxide in the mixed furnace gas. The outlet of the water ejector 11 of the vacuum absorption unit is directly connected to the circulating storage tank 9 of the vacuum absorption unit. When the water ejector 11 of the vacuum absorption unit uses its powerful power, it accurately ejects the liquid mixture containing gas into the circulating storage tank 9 of the vacuum absorption unit to perform efficient gas-liquid separation. The water ejector 11 of the vacuum absorption unit is the core component of this process. Its design fully considers the physical principles and dynamic characteristics of gas-liquid separation. When the gas-liquid mixture flows into the storage tank, due to the sudden decrease in flow rate and the expansion of space, the interaction force between gas and liquid weakens, and natural separation occurs immediately. The gas part gradually rises and gathers at the top of the circulating storage tank 9 of the vacuum absorption unit, while the liquid sinks under the action of gravity, achieving preliminary physical separation. In order to enhance the separation effect, a guide component separation device is provided inside the circulating storage tank 9 of the vacuum absorption unit, which can further refine the separation process, ensure that the gas is efficiently discharged, and the pure liquid is recycled and reused. This refined gas-liquid separation technology not only greatly improves the utilization rate of resources, but also eliminates the existence of too much gas in the liquid, which has a good effect on the operation of the vacuum absorption unit supporting the delivery water pump 8 and the vacuum absorption unit supporting the circulating water pump 10.

[0020] The separated gas is discharged from the top outlet of the circulating storage tank 9 of the vacuum absorption unit, and enters the secondary absorption tower 4 through the lower air inlet of the second absorption tower along the pipeline system for the third absorption process. This step, as one of the important links in the entire gas absorption sequence, is not only to fully save sulfur resources, but more importantly, the exhaust gas must be compliant and meet the relevant national environmental protection regulations.

[0021] At this point, the gas loop is complete. Air enters from the air conditioning door of the sulfur-burning furnace 1, reacts with sulfur combustion to generate sulfur dioxide mixed furnace gas, first enters the primary absorption tower 3 for multiple washing and absorption, and then enters the water ejector 11 of the vacuum absorption unit for strong absorption. Then, the gas and liquid are separated by the circulating storage tank 9 of the vacuum absorption unit and enter the second-stage absorption tower 4 for the third washing and absorption. The tail gas is finally discharged through the discharge pipe to meet the standards.

[0022] In the whole process, the water ejector 11 of the vacuum absorption unit is one of the important parts, which can not only make the sulfur dioxide molecules and water molecules collide and contact violently, greatly increasing the effect of sulfur dioxide being absorbed by water, but also is the power source of the whole gas circuit.

[0023] The liquid circuit adopts countercurrent washing and absorption method. Countercurrent washing and absorption technology is undoubtedly a revolutionary innovation. It not only greatly improves the efficiency of resource utilization, but also effectively reduces environmental pollution. It is an important driving force for achieving green production and sustainable development.

[0024] The core of this technology lies in the word "countercurrent", that is, the washing liquid and the fluid to be treated flow in opposite directions, forming an efficient contact and reaction interface. This design ensures that there is always a certain concentration difference between the two, so that the solute can be more fully captured and dissolved by the washing liquid, thereby achieving the purpose of deep purification and absorption, and realizing the dual goals of deep washing absorption and maximizing resource utilization.

[0025] Under the command of the control cabinet 7, the acid-making water drives the regulating valve 5, and supplies water to the secondary absorption tower 4 through the flow meter 6. The acid-making water enters the tower from the liquid inlet at the top of the secondary absorption tower 4 to carry out the washing and absorption process, and flows from its lower liquid outlet to the circulating storage tank 9 of the vacuum absorption unit. Then, it is pumped by the water delivery pump 8 of the vacuum absorption unit to the liquid inlet at the top of the primary absorption tower 3 to enter the tower to carry out the washing and absorption process, and flows out from its lower liquid outlet to the sulfite storage tank to complete the liquid circuit.

[0026] This process is simple and uses advanced technology. It will be a technological innovation in the field of industrial cleaning and absorption that pursues high efficiency and excellence.

[0027] As a preference of the above embodiment, the outlet of the bottom area on the left side of the absorption tower is connected to the corresponding sulfite storage tank through a pipeline.

[0028] As a preferred embodiment of the above embodiment, it also includes a regulating valve 5 and a flow meter 6. The acid water system is connected to the right area of ​​the top of the corresponding secondary absorption tower 4 through a pipeline, and the flow meter 6 and the regulating valve 5 are sequentially arranged on the pipeline.

[0029] As a preferred embodiment of the above embodiment, it also includes a control cabinet 7, which is controlled and connected with the corresponding sulfur burning furnace 1, sulfur storage box 2, primary absorption tower 3, secondary absorption tower 4, vacuum absorption unit supporting water delivery pump 8, vacuum absorption unit supporting circulation storage tank 9, vacuum absorption unit supporting circulation water pump 10, vacuum absorption unit supporting water ejector 11, regulating valve 5 and flow meter 6.

[0030] Example 2: Please refer to Figure 2Process flow chart, a sulfurous acid preparation system using workshop process water vacuum absorption unit, including sulfur burning furnace 1, sulfur storage box 2, primary absorption tower 3, secondary absorption tower 4, vacuum absorption unit supporting water pump 8, vacuum absorption unit supporting circulation storage tank 9, vacuum absorption unit supporting circulation water pump 10 and vacuum absorption unit supporting water ejector 11, the furnace gas outlet at the top of the sulfur burning furnace 1 is connected to the right area of ​​the bottom of the corresponding primary absorption tower 3 through a pipeline, the corresponding sulfur storage box 2 is connected to the corresponding sulfur burning furnace 1 feed port, the bottom end of the vacuum absorption unit supporting water ejector 11 is connected to the left area of ​​the top of the corresponding vacuum absorption unit supporting circulation storage tank 9, the top of the vacuum absorption unit supporting water ejector 11 is connected to the corresponding vacuum absorption unit supporting circulation pump 10 through a pipeline. One side of the circulating water pump 10 is connected, the top area of ​​the right end of the water ejector 11 of the vacuum absorption unit is connected to the middle of the top of the first-level absorption tower 3 through a pipeline, one side of the circulating water pump 10 of the vacuum absorption unit is connected to the bottom area of ​​the left end of the corresponding circulating storage tank 9 of the vacuum absorption unit, the middle of the top of the circulating storage tank 9 of the vacuum absorption unit is connected to the right bottom area of ​​the corresponding secondary absorption tower 4 through a pipeline, one side of the supporting delivery water pump 8 of the vacuum absorption unit is connected to the right bottom area of ​​the circulating storage tank 9 of the vacuum absorption unit, one side of the supporting delivery water pump 8 of the vacuum absorption unit is connected to the right area of ​​the top of the first-level absorption tower 3 through a pipeline, and the top area of ​​the left end of the circulating storage tank 9 of the vacuum absorption unit is connected to the bottom area of ​​the left end of the corresponding secondary absorption tower 4 through a pipeline.

[0031] When the equipment is in use, the raw sulfur in the sulfur storage box 2 enters the sulfur burning furnace 1 quantitatively through the scrambler under the instruction of the control cabinet 7, burns in the sulfur burning furnace 1 and generates sulfur dioxide mixed furnace gas, which is discharged from the tail of the sulfur burning furnace 1 and enters the lower part of the primary absorption tower 3, meets the water flowing countercurrently in the absorption tower, and the water absorbs sulfur dioxide to generate sulfurous acid, which is discharged from the lower outlet of the absorption tower to the sulfurous acid storage tank.

[0032] The number of the sulfur burning furnace 1 and the sulfur storage tank 2 is set to two groups, so that the production efficiency of the overall system is improved.

[0033] The remaining mixed furnace gas, driven by the water ejector 11 of the vacuum absorption unit, continues to exit at the top of the absorption tower and enters the air inlet of the water ejector 11 of the vacuum absorption unit. The working principle of the water ejector 11 of the vacuum absorption unit is exquisite and efficient. It uses the negative pressure zone formed by high-speed water flow to forcefully suck in the sulfur-containing furnace gas and complete the gas-liquid mixing in an instant. In this process, sulfur dioxide molecules and water molecules collide and contact violently, greatly increasing the chance of sulfur dioxide being absorbed by water. This is not just a simple physical process, but also a perfect combination of chemical absorption and physical dissolution, which ensures the efficient removal rate or efficient absorption rate of sulfur dioxide. Therefore, it is a process of secondary enhanced absorption of sulfur dioxide in the mixed furnace gas. The outlet of the water ejector 11 of the vacuum absorption unit is directly connected to the circulating storage tank 9 of the vacuum absorption unit. When the water ejector 11 of the vacuum absorption unit uses its powerful power, it accurately ejects the liquid mixture containing gas into the circulating storage tank 9 of the vacuum absorption unit to perform efficient gas-liquid separation. The water ejector 11 of the vacuum absorption unit is the core component of this process. Its design fully considers the physical principles and dynamic characteristics of gas-liquid separation. When the gas-liquid mixture flows into the storage tank, due to the sudden decrease in flow rate and the expansion of space, the interaction force between gas and liquid weakens, and natural separation occurs immediately. The gas part gradually rises and gathers at the top of the circulating storage tank 9 of the vacuum absorption unit, while the liquid sinks under the action of gravity, achieving preliminary physical separation. In order to enhance the separation effect, a guide component separation device is provided inside the circulating storage tank 9 of the vacuum absorption unit, which can further refine the separation process, ensure that the gas is efficiently discharged, and the pure liquid is recycled and reused. This refined gas-liquid separation technology not only greatly improves the utilization rate of resources, but also eliminates the existence of too much gas in the liquid, which has a good effect on the operation of the vacuum absorption unit supporting the delivery water pump 8 and the vacuum absorption unit supporting the circulating water pump 10.

[0034] The separated gas is discharged from the top outlet of the circulating storage tank 9 of the vacuum absorption unit, and enters the secondary absorption tower 4 through the lower air inlet of the second absorption tower along the pipeline system for the third absorption process. This step, as one of the important links in the entire gas absorption sequence, is not only to fully save sulfur resources, but more importantly, the exhaust gas must be compliant and meet the relevant national environmental protection regulations.

[0035] At this point, the gas loop is complete. Air enters from the air conditioning door of the sulfur-burning furnace 1, reacts with sulfur combustion to generate sulfur dioxide mixed furnace gas, first enters the primary absorption tower 3 for multiple washing and absorption, and then enters the water ejector 11 of the vacuum absorption unit for strong absorption. Then, the gas and liquid are separated by the circulating storage tank 9 of the vacuum absorption unit and enter the second-stage absorption tower 4 for the third washing and absorption. The tail gas is finally discharged through the discharge pipe to meet the standards.

[0036] In the whole process, the water ejector 11 of the vacuum absorption unit is one of the important parts, which can not only make the sulfur dioxide molecules and water molecules collide and contact violently, greatly increasing the effect of sulfur dioxide being absorbed by water, but also is the power source of the whole gas circuit.

[0037] The liquid circuit adopts countercurrent washing and absorption method. Countercurrent washing and absorption technology is undoubtedly a revolutionary innovation. It not only greatly improves the efficiency of resource utilization, but also effectively reduces environmental pollution.

[0038] The core of this technology lies in the word "countercurrent", that is, the washing liquid and the fluid to be treated flow in opposite directions, forming an efficient contact and reaction interface. This design ensures that there is always a certain concentration difference between the two, so that the solute can be more fully captured and dissolved by the washing liquid, thereby achieving the purpose of deep purification and absorption, and realizing the dual goals of deep washing absorption and maximizing resource utilization.

[0039] Under the command of the control cabinet 7, the acid-making water drives the regulating valve 5, and supplies water to the secondary absorption tower 4 through the flow meter 6. The acid-making water enters the tower from the liquid inlet at the top of the secondary absorption tower 4 to carry out the washing and absorption process, and flows from its lower liquid outlet to the circulating storage tank 9 of the vacuum absorption unit. Then, it is pumped by the water delivery pump 8 of the vacuum absorption unit to the liquid inlet at the top of the primary absorption tower 3 to enter the tower to carry out the washing and absorption process, and flows out from its lower liquid outlet to the sulfite storage tank to complete the liquid circuit.

[0040] This process is simple and uses advanced technology. It will be a technological innovation in the field of industrial cleaning and absorption that pursues high efficiency and excellence.

[0041] As a preference of the above embodiment, the outlet of the bottom area on the left side of the absorption tower is connected to the corresponding sulfite storage tank through a pipeline.

[0042] As a preferred embodiment of the above embodiment, it also includes a regulating valve 5 and a flow meter 6. The acid water system is connected to the right area of ​​the top of the corresponding secondary absorption tower 4 through a pipeline, and the flow meter 6 and the regulating valve 5 are sequentially arranged on the pipeline.

[0043] As a preferred embodiment of the above embodiment, it also includes a control cabinet 7, which is controlled and connected with the corresponding sulfur burning furnace 1, sulfur storage box 2, primary absorption tower 3, secondary absorption tower 4, vacuum absorption unit supporting water delivery pump 8, vacuum absorption unit supporting circulation storage tank 9, vacuum absorption unit supporting circulation water pump 10, vacuum absorption unit supporting water ejector 11, regulating valve 5 and flow meter 6.

[0044] In order to explain in detail the possible application scenarios, technical principles, specific schemes that can be implemented, and the purposes and effects that can be achieved, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0045] Reference to "embodiment" herein means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The term "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the various technical features mentioned in the embodiments can be combined in any way to form a corresponding implementable technical solution.

[0046] Unless otherwise defined, the technical terms used in this document have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms in this document is only for describing specific embodiments and is not intended to limit this application.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sulfurous acid preparation system using a workshop process water vacuum absorption unit, characterized in that: The invention comprises a sulfur burning furnace (1), a sulfur storage box (2), a primary absorption tower (3), a secondary absorption tower (4), a vacuum absorption unit supporting water pump (8), a vacuum absorption unit supporting circulating storage tank (9), a vacuum absorption unit supporting circulating water pump (10) and a vacuum absorption unit supporting water ejector (11), wherein the furnace gas outlet at the top of the sulfur burning furnace (1) is connected to the right side area at the bottom of the corresponding primary absorption tower (3) through a pipeline, the corresponding sulfur storage box (2) is connected to the corresponding sulfur burning furnace (1) feed port, the bottom end of the vacuum absorption unit supporting water ejector (11) is connected to the left side area at the top end of the corresponding vacuum absorption unit supporting circulating storage tank (9), the top end of the vacuum absorption unit supporting water ejector (11) is connected to one side of the corresponding vacuum absorption unit supporting circulating water pump (10) through a pipeline, and the The top area at the right end of the water ejector (11) of the vacuum absorption unit is connected to the middle of the top of the primary absorption tower (3) through a pipeline. The circulating water pump (10) of the vacuum absorption unit is connected to the bottom area at the left end of the corresponding circulating storage tank (9) of the vacuum absorption unit. The middle of the top of the circulating storage tank (9) of the vacuum absorption unit is connected to the bottom area at the right end of the corresponding secondary absorption tower (4) through a pipeline. The delivery water pump (8) of the vacuum absorption unit is connected to the bottom area at the right end of the circulating storage tank (9) of the vacuum absorption unit. The delivery water pump (8) of the vacuum absorption unit is connected to the right area at the top of the primary absorption tower (3) through a pipeline. The top area at the left end of the circulating storage tank (9) of the vacuum absorption unit is connected to the bottom area at the left end of the corresponding secondary absorption tower (4) through a pipeline.

2. A sulfurous acid preparation system using a workshop process water vacuum absorption unit according to claim 1, characterized in that: The outlet of the bottom area on the left side of the absorption tower is connected to the corresponding sulfite storage tank through a pipeline.

3. A sulfurous acid preparation system using a workshop process water vacuum absorption unit according to claim 2, characterized in that: It also includes a regulating valve (5) and a flow meter (6). The acid-making water system is connected to the right area at the top of the corresponding secondary absorption tower (4) through a pipeline, and the flow meter (6) and the regulating valve (5) are arranged on the pipeline in sequence.

4. A sulfurous acid preparation system using a workshop process water vacuum absorption unit according to claim 3, characterized in that: The invention also comprises a control cabinet (7), wherein the control cabinet (7) is controllably connected to the corresponding sulfur burning furnace (1), the sulfur storage tank (2), the primary absorption tower (3), the secondary absorption tower (4), the vacuum absorption unit supporting water delivery pump (8), the vacuum absorption unit supporting circulation storage tank (9), the vacuum absorption unit supporting circulation water pump (10), the vacuum absorption unit supporting water ejector (11), the regulating valve (5) and the flow meter (6).

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