CN115058724B - Energy-saving and consumption-reducing process of coal-electricity-manganese comprehensive utilization system - Google Patents
Energy-saving and consumption-reducing process of coal-electricity-manganese comprehensive utilization system Download PDFInfo
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- CN115058724B CN115058724B CN202210695429.1A CN202210695429A CN115058724B CN 115058724 B CN115058724 B CN 115058724B CN 202210695429 A CN202210695429 A CN 202210695429A CN 115058724 B CN115058724 B CN 115058724B
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- 229910052748 manganese Inorganic materials 0.000 title claims abstract description 41
- 239000011572 manganese Substances 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000008569 process Effects 0.000 title claims abstract description 23
- 239000001257 hydrogen Substances 0.000 claims abstract description 60
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 60
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 59
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims abstract description 56
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 48
- 239000007789 gas Substances 0.000 claims abstract description 33
- 238000004064 recycling Methods 0.000 claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 claims abstract description 19
- 238000002485 combustion reaction Methods 0.000 claims abstract description 13
- 150000002431 hydrogen Chemical class 0.000 claims abstract description 12
- 239000002912 waste gas Substances 0.000 claims abstract description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 16
- 238000002386 leaching Methods 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 16
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 12
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 239000004033 plastic Substances 0.000 claims description 8
- 229920003023 plastic Polymers 0.000 claims description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 4
- 238000005868 electrolysis reaction Methods 0.000 claims description 4
- 239000003546 flue gas Substances 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- 239000003507 refrigerant Substances 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims description 3
- 125000004122 cyclic group Chemical group 0.000 abstract 1
- 230000003068 static effect Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
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- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/21—Manganese oxides
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B47/00—Obtaining manganese
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/02—Hydrogen or oxygen
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/50—Processes
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B15/00—Operating or servicing cells
- C25B15/08—Supplying or removing reactants or electrolytes; Regeneration of electrolytes
- C25B15/083—Separating products
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
- C25B9/60—Constructional parts of cells
- C25B9/65—Means for supplying current; Electrode connections; Electric inter-cell connections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/02—Selection of particular materials
- F04D29/023—Selection of particular materials especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K5/00—Feeding or distributing other fuel to combustion apparatus
- F23K5/002—Gaseous fuel
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- General Engineering & Computer Science (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The invention provides an energy-saving and consumption-reducing process of a coal-electricity-manganese comprehensive utilization system, which comprises a coal-electricity-manganese comprehensive utilization system, wherein the coal-electricity-manganese comprehensive utilization system comprises a recycled hydrogen recycling system and an electrolytic manganese dioxide production system; the operation steps comprise that the mixed gas containing water and hydrogen is discharged from an electrolytic tank and then is collected by a gas collecting hood to enter a first induced draft fan; the gas exhausted from the first induced draft fan enters a condenser; the waste gas containing water from the condenser enters a steam-water separator to separate condensed water from hydrogen, and the condensed water is discharged to a condensed water collecting tank; the hydrogen discharged from the steam-water separator enters a second induced draft fan; the hydrogen discharged from the second induced draft fan enters the boiler in the coal-electricity-manganese comprehensive utilization system for combustion, and the purposes of saving energy, reducing consumption and reducing production cost are achieved by collecting the hydrogen generated by the electrolytic tank to realize the cyclic comprehensive utilization of resources.
Description
Technical Field
The invention relates to the technical field of comprehensive utilization of resources, in particular to an energy-saving and consumption-reducing process of a coal-electricity-manganese comprehensive utilization system.
Background
Electrolytic Manganese Dioxide (EMD) is a key component of modern alkaline, lithium and sodium batteries, including electrochemical capacitors and hydrogen-producing cathode materials, and has the characteristics of environmental compatibility, high redox potential, high rate capability, better relative performance over a wide temperature range, long shelf life, and the like. In the process of producing electrolytic manganese dioxide by adopting a coal-electricity-manganese comprehensive utilization system, a large amount of hydrogen is generated on an electrolytic cathode plate in the deposition process of anode manganese dioxide, 22.99Kg of hydrogen is generated when 1 ton of electrolytic manganese dioxide is produced, and 3.26 multiplied by 106KJ of heat can be generated by complete combustion, which is equivalent to the heat generated by 111Kg of standard coal combustion. At present, in the electrolytic manganese dioxide production process, the generated hydrogen is directly emptied and is not collected, so that not only is the serious waste of resources caused, but also the energy consumption is increased.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides an energy-saving and consumption-reducing process of a coal-electricity-manganese comprehensive utilization system, so as to solve the problems in the prior art.
(II) technical scheme
In order to achieve the above purpose, the invention is realized by the following technical scheme: the energy-saving and consumption-reducing process of the coal-electricity-manganese comprehensive utilization system comprises the coal-electricity-manganese comprehensive utilization system, wherein the coal-electricity-manganese comprehensive utilization system comprises a recycled hydrogen recycling system and an electrolytic manganese dioxide production system;
the electrolytic manganese dioxide production system is characterized in that a coal-fired boiler supplies power to a generator set, the generator set supplies power to an electrolytic tank, flue gas generated by the coal-fired boiler is desulfurized to prepare sulfuric acid, the sulfuric acid is used for leaching manganese ores, manganese is placed into the electrolytic tank for electrolysis after leaching, and raw materials are provided for electrolytic manganese dioxide;
the recycling system of the recovered hydrogen is connected with the electrolytic manganese dioxide production system and provided with two output ends and one input end, wherein one output end is connected with a coal-fired boiler in the electrolytic manganese dioxide production system and is used for conveying collected hydrogen to the coal-fired boiler for combustion, the other output end is used for conveying separated condensed water to a leaching solution in a manganese ore leaching process for preparation, and the input end is used for collecting the hydrogen generated in the electrolytic tank through a gas collecting hood;
the operation steps are as follows:
s1: the mixed gas containing water and hydrogen is discharged from the electrolytic tank and then is collected by a gas collecting hood to enter a first induced draft fan;
s2: the gas discharged from the first induced draft fan enters a condenser, the heat exchange area of the gas is 100m < 2 >, and the refrigerant medium is cold water at 7 ℃;
s3: the water-containing waste gas from the condenser enters a steam-water separator, the volume of the steam-water separator is 4m < 3 >, the condensed water and hydrogen are separated, and condensed water is discharged to a condensed water collecting tank;
s4: the hydrogen discharged from the steam-water separator enters a second induced draft fan;
s5: and the hydrogen discharged from the second induced draft fan enters a boiler in the coal-electricity-manganese comprehensive utilization system for combustion.
In this embodiment, preferably, the gas collecting hood and the gas delivery pipe in the recycled hydrogen recycling system are made of high polymer plastics, and the pipe diameter is 400-800 mm.
Through the technical scheme, the device can ensure enough safety when hydrogen is recovered.
As the preferred of this embodiment, first draught fan and second draught fan are axial fan, and wherein the impeller material is cast aluminium, and the motor is explosion-proof motor, just first draught fan and second draught fan amount of wind is 1000m 3/h, and the wind pressure is 4000Pa.
As the preferred embodiment, the first induced draft fan and the second induced draft fan impeller are made of cast aluminum or organic hard plastics, and all the components made of metal in the recycled hydrogen recycling system are grounded static eliminator, so that the safety of recycling hydrogen can be greatly ensured.
As the preferred embodiment, the condenser is specifically any one of a tube type heat exchanger or a serpentine coil type surface cooler, the material is Q235, the heat exchange area is 25-200m < 2 >, the temperature of a heat exchange medium adopted by the condenser is-15-7 ℃, and the condenser adopts grounding antistatic measures.
As the preferred embodiment, the steam-water separator is specifically a steam-water separator with a volume of 1-5 m 3 and a material of Q235 lining tetrafluoro.
(III) beneficial effects
The invention provides an energy-saving and consumption-reducing process of a coal-electricity-manganese comprehensive utilization system, which has the following beneficial effects: the hydrogen produced by electrolytic manganese dioxide is recovered by adding a recycling system into the electrolytic manganese dioxide production system, the hydrogen produced by the cathode of the electrolytic tank is safely collected and separated by utilizing a coal-electricity-manganese circulating system and is sent to a boiler for combustion, so that comprehensive recycling of resources is realized, meanwhile, the pipeline material in the recycling system is made of an organic resin material, the impeller of the conveying fan is made of cast aluminum or organic hard plastic, an explosion-proof motor is adopted, and all metal components in the system are grounded to eliminate static electricity, so that the safety of the hydrogen recycling process is effectively ensured.
Drawings
FIG. 1 is a diagram of a coal-electricity-manganese comprehensive utilization system according to the present invention;
FIG. 2 is a schematic diagram of the structure of the system for recycling hydrogen according to the present invention;
FIG. 3 is a flow chart of hydrogen recovery by the recovered hydrogen recycling system of the present invention.
In the figure: 1 a first induced draft fan, 2 a condenser, 3 a steam-water separator, 4 a second induced draft fan, 5 a coal-fired boiler, 6 a condensed water collecting tank, 7 an electrolytic tank and 8 a gas collecting hood.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.
Example 1
The embodiment provides an energy-saving and consumption-reducing process of a coal-electricity-manganese comprehensive utilization system, which comprises a coal-electricity-manganese comprehensive utilization system, wherein the coal-electricity-manganese comprehensive utilization system comprises a recycled hydrogen recycling system and an electrolytic manganese dioxide production system;
the electrolytic manganese dioxide production system is characterized in that a coal-fired boiler supplies power to a generator set, the generator set supplies power to an electrolytic tank, flue gas generated by the coal-fired boiler is desulfurized to prepare sulfuric acid, the sulfuric acid is used for leaching manganese ores, manganese is placed into the electrolytic tank for electrolysis after leaching, and raw materials are provided for electrolytic manganese dioxide;
the recycling system of the recovered hydrogen is connected with the electrolytic manganese dioxide production system and provided with two output ends and one input end, wherein one output end is connected with a coal-fired boiler in the electrolytic manganese dioxide production system and is used for conveying collected hydrogen to the coal-fired boiler for combustion, the other output end is used for conveying separated condensed water to a leaching solution in a manganese ore leaching process for preparation, and the input end is used for collecting the hydrogen generated in the electrolytic tank through a gas collecting hood;
the operation steps are as follows:
s1: the mixed gas containing water and hydrogen is discharged from the electrolytic tank 7 and then is collected by the gas collecting hood 8 to enter the first induced draft fan 1;
s2: the gas discharged from the first induced draft fan 1 enters a condenser 2, the heat exchange area of the gas is 100m 2, and the refrigerant medium is cold water at 7 ℃;
s3: the water-containing waste gas from the condenser 2 enters a steam-water separator 3, the volume of the steam-water separator 3 is 4m 3, the condensed water and hydrogen are separated, and condensed water is discharged to a condensed water collecting tank 6;
s4: the hydrogen discharged from the steam-water separator 3 enters a second induced draft fan 4;
s5: the hydrogen discharged from the second induced draft fan 4 enters a boiler in the coal-electricity-manganese comprehensive utilization system for combustion.
In this embodiment, the gas collecting hood 8 and the gas delivery pipe in the recycled hydrogen recycling system are made of polymer plastics such as PP and PE, and the pipe diameter is 400-800 mm, so that the device can ensure sufficient safety when recycling hydrogen.
Specifically, the first induced draft fan 1 and the second induced draft fan 4 are all axial flow fans, wherein the impeller material is cast aluminum, the motor is an explosion-proof motor, and the air quantity of the first induced draft fan 1 and the second induced draft fan 4 is 1000m 3/h, and the air pressure is 4000Pa.
In this embodiment, the impeller materials of the first induced draft fan 1 and the second induced draft fan 4 are cast aluminum or organic hard plastic, and all the components made of metal materials in the recycled hydrogen recycling system are grounded static eliminator, so that the safety during recycling hydrogen can be greatly ensured.
Wherein the condenser 2 is specifically any one of a tube type heat exchanger or a serpentine coil type surface cooler, the material is Q235, the heat exchange area is 25-200m < 2 >, the temperature of a heat exchange medium adopted by the condenser 2 is-15-7 ℃, and the condenser 2 adopts a grounding antistatic measure.
In the embodiment, the steam-water separator 3 is specifically a steam-water separator with a volume of 1-5 m 3 and a material of Q235 lined with tetrafluoro.
Example 2
The embodiment provides an energy-saving and consumption-reducing process of a coal-electricity-manganese comprehensive utilization system, which achieves the purposes of energy saving and consumption reduction, and an operation process flow chart is shown in fig. 1 and 2, and mainly comprises a collecting, condensing, steam-water separation and combustion process, wherein 10 tons of electrolytic manganese dioxide is produced per hour as an example;
the electrolytic manganese dioxide production system is characterized in that a coal-fired boiler supplies power to a generator set, the generator set supplies power to an electrolytic tank, flue gas generated by the coal-fired boiler is desulfurized to prepare sulfuric acid, the sulfuric acid is used for leaching manganese ores, manganese is placed into the electrolytic tank for electrolysis after leaching, and raw materials are provided for electrolytic manganese dioxide;
the recycling system of the recovered hydrogen is connected with the electrolytic manganese dioxide production system and provided with two output ends and one input end, wherein one output end is connected with a coal-fired boiler in the electrolytic manganese dioxide production system and is used for conveying collected hydrogen to the coal-fired boiler for combustion, the other output end is used for conveying separated condensed water to a leaching solution in a manganese ore leaching process for preparation, and the input end is used for collecting the hydrogen generated in the electrolytic tank through a gas collecting hood;
the operation steps are as follows:
s1: after the mixed gas containing water and hydrogen is discharged from the electrolytic tank 7, the mixed gas is collected by the gas collecting hood 8 and enters the first induced draft fan 1, the air quantity of the first induced draft fan 1 is 1000m < 3 >/h, and the air pressure is 4000Pa;
s2: the gas discharged from the first induced draft fan 1 enters a condenser 2, the heat exchange area of the gas is 100m 2, and the refrigerant medium is cold water at 7 ℃;
s3: the water-containing waste gas from the condenser 2 enters a steam-water separator 3, the volume of the steam-water separator 3 is 4m 3, the condensed water and hydrogen are separated, and condensed water is discharged to a condensed water collecting tank 6;
s4: the hydrogen discharged from the steam-water separator 3 enters a second induced draft fan 4, the air quantity of the second induced draft fan 4 is 1000m < 3 >/h, and the air pressure is 4000Pa;
s5: the hydrogen discharged from the second induced draft fan 4 enters a boiler in the coal-electricity-manganese comprehensive utilization system for combustion.
In the system for recycling hydrogen, as shown in fig. 2, a first induced draft fan 1, a condenser 2, a steam-water separator 3, a second induced draft fan 4, a coal-fired boiler 5 and a gas collecting hood 8 are connected with each other through pipelines.
In this embodiment, the gas collecting hood 8 and the gas delivery pipe in the recycled hydrogen recycling system are made of high molecular plastics, and the pipe diameter is 400-800 mm, so that the device can ensure enough safety when recycling hydrogen.
Specifically, the first induced draft fan 1 and the second induced draft fan 4 are both axial flow fans, wherein the impeller is made of cast aluminum, and the motor is an explosion-proof motor.
In this embodiment, the impeller materials of the first induced draft fan 1 and the second induced draft fan 4 are cast aluminum or organic hard plastic, and all the components made of metal materials in the recycled hydrogen recycling system are grounded static eliminator, so that the safety during recycling hydrogen can be greatly ensured.
Wherein the condenser 2 is specifically any one of a tube type heat exchanger or a serpentine coil type surface cooler, the material is Q235, the heat exchange area is 25-200m < 2 >, the temperature of a heat exchange medium adopted by the condenser 2 is-15-7 ℃, and the condenser 2 adopts a grounding antistatic measure.
In the embodiment, the steam-water separator 3 is specifically a steam-water separator with a volume of 1-5 m 3 and a material of Q235 lined with tetrafluoro.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. An energy-saving and consumption-reducing process of a coal-electricity-manganese comprehensive utilization system is characterized in that: the coal-electricity-manganese comprehensive utilization system comprises a recovered hydrogen recycling system and an electrolytic manganese dioxide production system;
the electrolytic manganese dioxide production system is characterized in that a coal-fired boiler supplies power to a generator set, the generator set supplies power to an electrolytic tank, flue gas generated by the coal-fired boiler is desulfurized to prepare sulfuric acid, the sulfuric acid is used for leaching manganese ores, manganese is placed into the electrolytic tank for electrolysis after leaching, and raw materials are provided for electrolytic manganese dioxide;
the recycling system of the recovered hydrogen is connected with the electrolytic manganese dioxide production system and provided with two output ends and one input end, wherein one output end is connected with a coal-fired boiler in the electrolytic manganese dioxide production system and is used for conveying collected hydrogen to the coal-fired boiler for combustion, the other output end is used for conveying separated condensed water to a leaching solution in a manganese ore leaching process for preparation, and the input end is used for collecting the hydrogen generated in the electrolytic tank through a gas collecting hood;
the operation steps are as follows:
s1: the mixed gas containing water and hydrogen is discharged from the electrolytic tank (7) and then is collected by a gas collecting hood (8) to enter a first induced draft fan (1);
s2: the gas discharged from the first induced draft fan (1) enters a condenser (2), the heat exchange area of the condenser (2) is 100 square meters, and cold water at 7 ℃ is used as a refrigerant medium;
s3: the water-containing waste gas from the condenser (2) enters a steam-water separator (3), the volume of the steam-water separator (3) is 4m, the condensed water and hydrogen are separated, and the condensed water is discharged to a condensed water collecting tank (6);
s4: the hydrogen discharged from the steam-water separator (3) enters a second induced draft fan (4);
s5: and the hydrogen discharged from the second induced draft fan (4) enters a coal-fired boiler in the coal-electricity-manganese comprehensive utilization system for combustion.
2. The energy-saving and consumption-reducing process of the coal-electricity-manganese comprehensive utilization system according to claim 1, which is characterized in that: the gas collecting hood (8) and the gas conveying pipeline in the recycling system are made of high polymer plastics, and the pipe diameter is 400-800 mm.
3. The energy-saving and consumption-reducing process of the coal-electricity-manganese comprehensive utilization system according to claim 1, which is characterized in that: the first induced draft fan (1) and the second induced draft fan (4) are all axial flow fans, wherein impeller materials are cast aluminum, the motor is an explosion-proof motor, and the air quantity of the first induced draft fan (1) and the second induced draft fan (4) is 1000 m/h, and the air pressure is 4000Pa.
4. The energy-saving and consumption-reducing process of the coal-electricity-manganese comprehensive utilization system according to claim 1, which is characterized in that: the condenser (2) is specifically any one of a tube type heat exchanger or a coiled tube type surface cooler, the material is Q235, and the condenser (2) adopts a grounding antistatic measure.
5. The energy-saving and consumption-reducing process of the coal-electricity-manganese comprehensive utilization system according to claim 1, which is characterized in that: the steam-water separator (3) is specifically a steam-water separator with a volume of 1-5 m, and is made of Q235 lining tetrafluoro.
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| CN104726702A (en) * | 2015-03-13 | 2015-06-24 | 四川会理铅锌股份有限公司 | Method for preparing manganese sulfate from high-sulfur manganese carbonate ores and manganese peroxide ores |
| CN109987636A (en) * | 2019-05-05 | 2019-07-09 | 刘向东 | A kind of energy-saving new technology of manganese sulphate |
| CN113909260A (en) * | 2021-11-11 | 2022-01-11 | 湖南广义节能装备有限公司 | Manganese product clean production and resource recycling treatment process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104726702A (en) * | 2015-03-13 | 2015-06-24 | 四川会理铅锌股份有限公司 | Method for preparing manganese sulfate from high-sulfur manganese carbonate ores and manganese peroxide ores |
| CN109987636A (en) * | 2019-05-05 | 2019-07-09 | 刘向东 | A kind of energy-saving new technology of manganese sulphate |
| CN113909260A (en) * | 2021-11-11 | 2022-01-11 | 湖南广义节能装备有限公司 | Manganese product clean production and resource recycling treatment process |
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| 二氧化锰电解工序研究;王松;刘子民;胡平;吴睿林;冷森林;;中国锰业(第01期) * |
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