CN116003004B - Cement production process coupled with carbon dioxide capturing, electrocatalytic and oxygen-enriched combustion - Google Patents
Cement production process coupled with carbon dioxide capturing, electrocatalytic and oxygen-enriched combustion Download PDFInfo
- Publication number
- CN116003004B CN116003004B CN202310037772.1A CN202310037772A CN116003004B CN 116003004 B CN116003004 B CN 116003004B CN 202310037772 A CN202310037772 A CN 202310037772A CN 116003004 B CN116003004 B CN 116003004B
- Authority
- CN
- China
- Prior art keywords
- flue gas
- carbon dioxide
- waste heat
- oxygen
- electrolytic cell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 78
- 239000004568 cement Substances 0.000 title claims abstract description 44
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 39
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 39
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 239000001301 oxygen Substances 0.000 title claims abstract description 26
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 26
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 55
- 239000003546 flue gas Substances 0.000 claims abstract description 51
- 239000002918 waste heat Substances 0.000 claims abstract description 33
- 239000003792 electrolyte Substances 0.000 claims abstract description 22
- 238000010521 absorption reaction Methods 0.000 claims abstract description 14
- 239000007789 gas Substances 0.000 claims abstract description 9
- 239000000446 fuel Substances 0.000 claims abstract description 8
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 7
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 7
- 230000005611 electricity Effects 0.000 claims abstract description 5
- 230000008878 coupling Effects 0.000 claims abstract description 3
- 238000010168 coupling process Methods 0.000 claims abstract description 3
- 238000005859 coupling reaction Methods 0.000 claims abstract description 3
- 238000005406 washing Methods 0.000 claims description 47
- 239000007788 liquid Substances 0.000 claims description 45
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 27
- 238000006477 desulfuration reaction Methods 0.000 claims description 25
- 230000023556 desulfurization Effects 0.000 claims description 25
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 24
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 18
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 16
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 16
- 239000000428 dust Substances 0.000 claims description 14
- 239000011736 potassium bicarbonate Substances 0.000 claims description 9
- 229910000028 potassium bicarbonate Inorganic materials 0.000 claims description 9
- 235000015497 potassium bicarbonate Nutrition 0.000 claims description 9
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 claims description 9
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 9
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 8
- 235000011181 potassium carbonates Nutrition 0.000 claims description 8
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 8
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 8
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 238000004064 recycling Methods 0.000 claims description 2
- 239000000779 smoke Substances 0.000 claims 3
- 238000000926 separation method Methods 0.000 claims 1
- 235000017550 sodium carbonate Nutrition 0.000 claims 1
- 238000005868 electrolysis reaction Methods 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 6
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 4
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 2
- 101001121408 Homo sapiens L-amino-acid oxidase Proteins 0.000 description 2
- 102100026388 L-amino-acid oxidase Human genes 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 235000019253 formic acid Nutrition 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000006722 reduction reaction Methods 0.000 description 2
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical class S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 2
- 229910052815 sulfur oxide Inorganic materials 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 1
- 238000010795 Steam Flooding Methods 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 description 1
- 229910001950 potassium oxide Inorganic materials 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
本发明公开了一种耦合二氧化碳捕集、电催化和富氧燃烧的水泥生产工艺，涉及水泥烟气处理技术领域，包括水泥窑、余热发电机组、多功能吸收塔、富集塔、电解池和电解液循环系统，所述水泥窑用于进行富氧燃烧和产生烟气，所述余热发电机组用于吸收烟气热能进行发电，所述多功能吸收塔用于吸收烟气中的非二氧化碳物质，所述富集塔用于吸收二氧化碳，所述电解池用于进行电解反应，所述电解液循环系统用于在电解池和富集塔之间循环使用电解液本发明用于对水泥烟气进行处理产生氧气和合成气燃料用于水泥生产的富氧燃烧，且该装置绿色环保、高效节能，利用烟气余热供能，充分利用了电解池两级生产的产物。The invention discloses a cement production process coupling carbon dioxide capture, electrocatalysis and oxygen-enriched combustion, and relates to the technical field of cement flue gas treatment, including a cement kiln, a waste heat generator set, a multifunctional absorption tower, an enrichment tower, an electrolytic cell and an electrolyte circulation system, wherein the cement kiln is used for oxygen-enriched combustion and generating flue gas, the waste heat generator set is used for absorbing flue gas heat energy to generate electricity, the multifunctional absorption tower is used for absorbing non-carbon dioxide substances in the flue gas, the enrichment tower is used for absorbing carbon dioxide, the electrolytic cell is used for electrolysis reaction, and the electrolyte circulation system is used for circulating electrolyte between the electrolytic cell and the enrichment tower. The invention is used for treating cement flue gas to generate oxygen and synthesis gas fuel for oxygen-enriched combustion in cement production, and the device is green, environmentally friendly, highly efficient and energy-saving, utilizes flue gas waste heat for energy supply, and makes full use of the products of two-stage production of the electrolytic cell.
Description
技术领域Technical Field
本发明涉及一种水泥烟气处理工艺，具体涉及一种耦合二氧化碳捕集、电催化和富氧燃烧的水泥生产工艺。The invention relates to a cement flue gas treatment process, in particular to a cement production process coupling carbon dioxide capture, electrocatalysis and oxygen-enriched combustion.
背景技术Background technique
全球升温已经导致气候风险越来越高，二氧化碳是目前排放的最主要的温室气体，水泥行业是工业领域第二大碳排放行业，水泥生产过程中的二氧化碳排放主要源于石灰石煅烧和燃烧燃料；Global warming has led to increasing climate risks. Carbon dioxide is the most important greenhouse gas currently emitted. The cement industry is the second largest carbon emitter in the industrial field. Carbon dioxide emissions in the cement production process mainly come from limestone calcination and fuel combustion.
碳捕集、利用与封存技术(CCUS)被认为是我国实现“双碳”目标的重要手段，但现有CCUS技术仍存在二氧化碳捕集能耗高、二氧化碳利用方式单一、无法和水泥工业有机结合等问题。例如专利公开号为CN113606946A，公开了一种水泥窑烟气二氧化碳捕集系统，但并没有解决捕集后高纯度二氧化碳的利用问题。专利公开号为CN113897630A，公开了一种二氧化碳电解制甲酸用制备气体再利用装置，但一方面，该装置使用的是高纯度二氧化碳气体，无法规避高昂的二氧化碳捕集费用；另一方面，该装置生产的主要产品是化工产品甲酸，无法实现和水泥熟料生产工艺的耦合；Carbon capture, utilization and storage technology (CCUS) is considered to be an important means for my country to achieve the "dual carbon" goal, but the existing CCUS technology still has problems such as high energy consumption for carbon dioxide capture, single carbon dioxide utilization method, and inability to be organically combined with the cement industry. For example, the patent publication number is CN113606946A, which discloses a cement kiln flue gas carbon dioxide capture system, but does not solve the problem of utilizing high-purity carbon dioxide after capture. The patent publication number is CN113897630A, which discloses a gas recycling device for preparing formic acid by electrolysis of carbon dioxide, but on the one hand, the device uses high-purity carbon dioxide gas and cannot avoid the high cost of carbon dioxide capture; on the other hand, the main product produced by the device is the chemical product formic acid, which cannot be coupled with the cement clinker production process;
因此需要对现有装置进行改进，实现水泥生产过程中的碳循环，降低碳捕集过程能耗。Therefore, it is necessary to improve the existing equipment to realize carbon circulation in the cement production process and reduce the energy consumption of the carbon capture process.
发明内容Summary of the invention
本发明的目的在于提供一种耦合二氧化碳捕集、电催化和富氧燃烧的水泥生产工艺，以解决现有技术中导致的上述多项缺陷。The object of the present invention is to provide a cement production process that couples carbon dioxide capture, electrocatalysis and oxygen-enriched combustion to solve the above-mentioned multiple defects caused by the prior art.
一种耦合二氧化碳捕集、电催化和富氧燃烧的水泥生产工艺，包括水泥窑、余热发电机组、多功能吸收塔、富集塔、电解池和电解液循环系统，所述水泥窑用于进行富氧燃烧和产生烟气，所述余热发电机组用于吸收烟气热能进行发电，所述多功能吸收塔用于吸收烟气中的非二氧化碳物质，所述富集塔用于吸收二氧化碳，所述电解池用于进行电解反应，所述电解液循环系统用于在电解池和富集塔之间循环使用电解液。A cement production process coupled with carbon dioxide capture, electrocatalysis and oxygen-enriched combustion, comprising a cement kiln, a waste heat generator set, a multifunctional absorption tower, an enrichment tower, an electrolytic cell and an electrolyte circulation system, wherein the cement kiln is used for oxygen-enriched combustion and generating flue gas, the waste heat generator set is used for absorbing flue gas heat energy to generate electricity, the multifunctional absorption tower is used for absorbing non-carbon dioxide substances in the flue gas, the enrichment tower is used for absorbing carbon dioxide, the electrolytic cell is used for performing electrolytic reaction, and the electrolyte circulation system is used for circulating electrolyte between the electrolytic cell and the enrichment tower.
优选的，所述余热发电机组包括余热锅炉和汽轮发电机组，所述余热锅炉与水泥窑连接，吸收水泥窑烟气中的热量，所述余热锅炉为立式锅炉，可以提高蒸汽产量，所述汽轮发电机组与余热锅炉连接，并在余热锅炉产生的蒸汽带动下工作，将热能转化为电能。Preferably, the waste heat power generation unit includes a waste heat boiler and a steam turbine generator set. The waste heat boiler is connected to a cement kiln to absorb heat from the flue gas of the cement kiln. The waste heat boiler is a vertical boiler that can increase steam production. The steam turbine generator set is connected to the waste heat boiler and works under the drive of the steam generated by the waste heat boiler to convert thermal energy into electrical energy.
优选的，所述多功能吸收塔包括除尘区域、脱硫脱硝区域、二次洗涤区域、烟气洗涤液进口、烟气洗涤液出口、脱硫脱硝液进口、脱硫脱硝液出口、二次洗涤液进口和二次洗涤液出口，所述除尘区域、脱硫脱硝区域和二次洗涤区域依次相连，所述三个区域之间均设有隔断层，所述烟气洗涤液进口和烟气洗涤液出口分别设在除尘区域的两侧，用于除去烟气中的灰尘颗粒，所述脱硫脱硝洗涤液进口和脱硫脱硝洗涤液出口分别设在脱硫脱硝区域的两侧，用于除去烟气中的硫氧化物和氮氧化物，所述二次洗涤液进口和二次洗涤液出口分别设在二次洗涤区域的两侧，用于对烟气进行二次洗涤。Preferably, the multifunctional absorption tower comprises a dust removal area, a desulfurization and denitrification area, a secondary washing area, a flue gas washing liquid inlet, a flue gas washing liquid outlet, a desulfurization and denitrification liquid inlet, a desulfurization and denitrification liquid outlet, a secondary washing liquid inlet and a secondary washing liquid outlet. The dust removal area, the desulfurization and denitrification area and the secondary washing area are connected in sequence, and a partition layer is provided between the three areas. The flue gas washing liquid inlet and the flue gas washing liquid outlet are respectively arranged on both sides of the dust removal area for removing dust particles in the flue gas. The desulfurization and denitrification washing liquid inlet and the desulfurization and denitrification washing liquid outlet are respectively arranged on both sides of the desulfurization and denitrification area for removing sulfur oxides and nitrogen oxides in the flue gas. The secondary washing liquid inlet and the secondary washing liquid outlet are respectively arranged on both sides of the secondary washing area for secondary washing of the flue gas.
优选的，所述富集塔内设有氢氧化钾、氢氧化钠的一种或混合液，用于吸收处理后的烟气中的二氧化碳，所述二氧化碳被富集之后转化为碳酸氢钾(或碳酸氢钠)及少量的碳酸钾(或碳酸钠)。Preferably, the enrichment tower is provided with potassium hydroxide, sodium hydroxide or a mixed solution for absorbing carbon dioxide in the treated flue gas. The carbon dioxide is converted into potassium bicarbonate (or sodium bicarbonate) and a small amount of potassium carbonate (or sodium carbonate) after enrichment.
优选的，所述电解池包括阳极电极和阴极电极，所述阳极电极和阴极电极均与水泥窑连接，所述阳极电极产生氧气用于进行富氧燃烧，所述阴极电极产生包含一氧化碳和氢气的合成气，用于作为水泥窑的燃料。Preferably, the electrolytic cell comprises an anode electrode and a cathode electrode, both of which are connected to a cement kiln, the anode electrode generates oxygen for oxygen-enriched combustion, and the cathode electrode generates synthesis gas containing carbon monoxide and hydrogen for use as fuel for the cement kiln.
优选的，所述电解液循环系统包括与富集塔、阳极电极以及阴极电极相连的循环管道，所述富集液吸收二氧化碳产生二氧化碳生成碳酸氢钾(或碳酸氢钠)及少量的碳酸钾(或碳酸钠)后，经过电解池反应后又生成氢氧化钾或氢氧化钠，然后富集吸收二氧化碳后再次进入电解池成为电解液。Preferably, the electrolyte circulation system includes a circulation pipeline connected to an enrichment tower, an anode electrode and a cathode electrode. The enriched liquid absorbs carbon dioxide to generate carbon dioxide to generate potassium bicarbonate (or sodium bicarbonate) and a small amount of potassium carbonate (or sodium carbonate), which then reacts in an electrolytic cell to generate potassium hydroxide or sodium hydroxide, and then enters the electrolytic cell again to become an electrolyte after enriching and absorbing carbon dioxide.
本发明的优点在于：本发明用于对水泥烟气进行处理产生氧气和合成气燃料用于水泥生产的富氧燃烧，且该装置绿色环保、高效节能，利用烟气余热供能，充分利用了电解池两级生产的产物。The advantages of the present invention are: the present invention is used to treat cement flue gas to generate oxygen and synthesis gas fuel for oxygen-enriched combustion in cement production, and the device is green, environmentally friendly, efficient and energy-saving, uses flue gas waste heat for energy, and fully utilizes the products of two-stage production of the electrolytic cell.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
图1为本发明的结构示意图。FIG1 is a schematic structural diagram of the present invention.
其中1—水泥窑、2—余热发电机组、3—多功能吸收塔、4—富集塔、5—电解池、6—电解液循环系统、21—余热锅炉、22—汽轮发电机组、31—除尘区域、32—脱硫脱硝区域、33—二次洗涤区域、311—烟气洗涤液进口、312—烟气洗涤液出口、321—脱硫脱硝液进口、322—脱硫脱硝液出口、331—二次洗涤液进口、332—二次洗涤液出口、51—阳极电极、52—阴极电极。Among them, 1 is a cement kiln, 2 is a waste heat power generation unit, 3 is a multifunctional absorption tower, 4 is an enrichment tower, 5 is an electrolytic cell, 6 is an electrolyte circulation system, 21 is a waste heat boiler, 22 is a steam turbine generator unit, 31 is a dust removal area, 32 is a desulfurization and denitrification area, 33 is a secondary washing area, 311 is a flue gas washing liquid inlet, 312 is a flue gas washing liquid outlet, 321 is a desulfurization and denitrification liquid inlet, 322 is a desulfurization and denitrification liquid outlet, 331 is a secondary washing liquid inlet, 332 is a secondary washing liquid outlet, 51 is an anode electrode, and 52 is a cathode electrode.
具体实施方式Detailed ways
为使本发明实现的技术手段、创作特征、达成目的与功效易于明白了解，下面结合具体实施方式，进一步阐述本发明。In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.
如图1所示，一种耦合二氧化碳捕集、电催化和富氧燃烧的水泥生产工艺，包括水泥窑1、余热发电机组2、多功能吸收塔3、富集塔4、电解池5和电解液循环系统6，所述水泥窑1用于进行富氧燃烧和产生烟气，所述余热发电机组2用于吸收烟气热能进行发电，所述多功能吸收塔3用于吸收烟气中的非二氧化碳物质，所述富集塔4用于吸收二氧化碳，所述电解池5用于进行电解反应，所述电解液循环系统6用于在电解池5和富集塔4之间循环使用电解液。As shown in FIG1 , a cement production process coupled with carbon dioxide capture, electrocatalysis and oxygen-enriched combustion includes a cement kiln 1, a waste heat generator set 2, a multifunctional absorption tower 3, an enrichment tower 4, an electrolytic cell 5 and an electrolyte circulation system 6, wherein the cement kiln 1 is used for oxygen-enriched combustion and generating flue gas, the waste heat generator set 2 is used for absorbing flue gas heat energy to generate electricity, the multifunctional absorption tower 3 is used for absorbing non-carbon dioxide substances in the flue gas, the enrichment tower 4 is used for absorbing carbon dioxide, the electrolytic cell 5 is used for electrolysis reaction, and the electrolyte circulation system 6 is used for circulating electrolyte between the electrolytic cell 5 and the enrichment tower 4.
在本实施例中，所述余热发电机组2包括余热锅炉21和汽轮发电机组22，所述余热锅炉21与水泥窑1连接，吸收水泥窑1烟气中的热量，所述余热锅炉21为立式锅炉，可以提高蒸汽产量，所述汽轮发电机组22与余热锅炉21连接，并在余热锅炉21产生的蒸汽带动下工作，将热能转化为电能。In this embodiment, the waste heat generator set 2 includes a waste heat boiler 21 and a steam turbine generator set 22. The waste heat boiler 21 is connected to the cement kiln 1 to absorb heat from the flue gas of the cement kiln 1. The waste heat boiler 21 is a vertical boiler that can increase steam production. The steam turbine generator set 22 is connected to the waste heat boiler 21 and works under the drive of the steam generated by the waste heat boiler 21 to convert thermal energy into electrical energy.
在本实施例中，所述多功能吸收塔3包括除尘区域31、脱硫脱硝区域32、二次洗涤区域33、烟气洗涤液进口311、烟气洗涤液出口312、脱硫脱硝液进口321、脱硫脱硝液出口322、二次洗涤液进口331和二次洗涤液出口332，所述除尘区域31、脱硫脱硝区域32和二次洗涤区域33依次相连，所述三个区域之间均设有隔断层，所述烟气洗涤液进口311和烟气洗涤液出口312分别设在除尘区域31的两侧，用于除去烟气中的灰尘颗粒，所述脱硫脱硝洗涤液进口和脱硫脱硝洗涤液出口分别设在脱硫脱硝区域32的两侧，用于除去烟气中的硫氧化物和氮氧化物，所述二次洗涤液进口331和二次洗涤液出口332分别设在二次洗涤区域33的两侧，用于对烟气进行二次洗涤。In this embodiment, the multifunctional absorption tower 3 includes a dust removal area 31, a desulfurization and denitrification area 32, a secondary washing area 33, a flue gas washing liquid inlet 311, a flue gas washing liquid outlet 312, a desulfurization and denitrification liquid inlet 321, a desulfurization and denitrification liquid outlet 322, a secondary washing liquid inlet 331 and a secondary washing liquid outlet 332. The dust removal area 31, the desulfurization and denitrification area 32 and the secondary washing area 33 are connected in sequence, and a partition layer is provided between the three areas. The flue gas washing liquid inlet 311 and the flue gas washing liquid outlet 312 are respectively arranged on both sides of the dust removal area 31 for removing dust particles in the flue gas. The desulfurization and denitrification washing liquid inlet and the desulfurization and denitrification washing liquid outlet are respectively arranged on both sides of the desulfurization and denitrification area 32 for removing sulfur oxides and nitrogen oxides in the flue gas. The secondary washing liquid inlet 331 and the secondary washing liquid outlet 332 are respectively arranged on both sides of the secondary washing area 33 for secondary washing of the flue gas.
在本实施例中，所述电解液循环系统6包括与富集塔4、阳极电极51以及阴极电极52相连的循环管道，所述富集液吸收二氧化碳产生碳酸氢钾(或碳酸氢钠)及少量的碳酸钾(或碳酸钠)后，经过电解池5反应后又生成氢氧化钾或氢氧化钠，然后富集吸收二氧化碳后再次进入电解池5成为电解液；所述富集塔4内设有氢氧化钾、氢氧化钠的一种或混合液，用于吸收处理后的烟气中的二氧化碳，所述二氧化碳被富集之后转化为碳酸氢钾(或碳酸氢钠)及少量的碳酸钾(或碳酸钠)；In this embodiment, the electrolyte circulation system 6 includes a circulation pipeline connected to the enrichment tower 4, the anode electrode 51 and the cathode electrode 52. After the enriched liquid absorbs carbon dioxide to produce potassium bicarbonate (or sodium bicarbonate) and a small amount of potassium carbonate (or sodium carbonate), it is reacted in the electrolytic cell 5 to generate potassium hydroxide or sodium hydroxide, and then enriches and absorbs carbon dioxide and enters the electrolytic cell 5 again to become an electrolyte; the enrichment tower 4 is provided with one or a mixture of potassium hydroxide and sodium hydroxide for absorbing carbon dioxide in the treated flue gas, and the carbon dioxide is converted into potassium bicarbonate (or sodium bicarbonate) and a small amount of potassium carbonate (or sodium carbonate) after being enriched;
所述电解池5包括阳极电极51和阴极电极52，所述阳极电极51和阴极电极52均与水泥窑1连接，所述阳极电极51产生氧气用于进行富氧燃烧，所述阴极电极52产生包含一氧化碳和氢气的合成气，用于作为水泥窑1的燃料。The electrolytic cell 5 includes an anode electrode 51 and a cathode electrode 52 , both of which are connected to the cement kiln 1 . The anode electrode 51 generates oxygen for oxygen-enriched combustion, and the cathode electrode 52 generates synthesis gas containing carbon monoxide and hydrogen, which is used as fuel for the cement kiln 1 .
本发明的工作原理为：所述水泥窑1在生产过程中产生烟气，所述烟气首先进入余热锅炉21中被吸收热能产生蒸汽，蒸汽带动汽轮发电机组22发电，汽轮发电机组22将热能提供给电解池5进行电解反应，所述烟气经过余热锅炉21之后再进入多功能吸收塔3，通过在多功能吸收塔3中分区域倒入相应的洗涤液进行了除尘处理、脱硫脱硝和二次洗涤处理后，烟气中的二氧化碳纯度提高，接着烟气进入富集塔4中，二氧化碳在富集塔4中被氢氧化钾或氢氧化钠吸收产生碳酸氢钾(或碳酸氢钠)及少量的碳酸钾(或碳酸钠)，从而作为电解液参与电解还原反应，所述电解液在反应结束后产生氢氧化钾或者氢氧化钠继续进入富集塔4，再生成碳酸氢钾(或碳酸氢钠)及少量的碳酸钾(或碳酸钠)参与反应，使得电解液循环使用，所述电解池5进行电解还原反应，其阳极电极51产生氧气，用于进行富氧燃烧，阴极电极52产生包含一氧化碳和氢气的合成气，用于作为富氧燃烧的燃料。The working principle of the present invention is as follows: the cement kiln 1 generates flue gas during the production process, and the flue gas first enters the waste heat boiler 21 to absorb heat energy to generate steam, and the steam drives the steam turbine generator set 22 to generate electricity, and the steam turbine generator set 22 provides heat energy to the electrolytic cell 5 for electrolysis reaction. After the flue gas passes through the waste heat boiler 21, it enters the multifunctional absorption tower 3. After the corresponding washing liquid is poured into the multifunctional absorption tower 3 in different regions for dust removal, desulfurization and denitrification and secondary washing, the purity of carbon dioxide in the flue gas is improved, and then the flue gas enters the enrichment tower 4, and the carbon dioxide is hydrogenated in the enrichment tower 4. Potassium oxide or sodium hydroxide absorbs to produce potassium bicarbonate (or sodium bicarbonate) and a small amount of potassium carbonate (or sodium carbonate), thereby participating in the electrolytic reduction reaction as an electrolyte. After the reaction is completed, the electrolyte produces potassium hydroxide or sodium hydroxide and continues to enter the enrichment tower 4 to regenerate potassium bicarbonate (or sodium bicarbonate) and a small amount of potassium carbonate (or sodium carbonate) to participate in the reaction, so that the electrolyte is recycled. The electrolytic cell 5 performs an electrolytic reduction reaction, and its anode electrode 51 produces oxygen for oxygen-enriched combustion, and the cathode electrode 52 produces synthesis gas containing carbon monoxide and hydrogen, which is used as a fuel for oxygen-enriched combustion.
基于上述，本发明用于对水泥烟气进行处理产生氧气和合成气燃料用于水泥生产的富氧燃烧，且该装置绿色环保、高效节能，利用烟气余热供能，充分利用了电解池两级生产的产物。Based on the above, the present invention is used to process cement flue gas to generate oxygen and synthesis gas fuel for oxygen-enriched combustion in cement production. The device is green, environmentally friendly, efficient and energy-saving, uses flue gas waste heat for energy, and fully utilizes the products of the two-stage production of the electrolytic cell.
由技术常识可知，本发明可以通过其它的不脱离其精神实质或必要特征的实施方案来实现。因此，上述公开的实施方案，就各方面而言，都只是举例说明，并不是仅有的。所有在本发明范围内或在等同于本发明的范围内的改变均被本发明包含。It is known from common technical knowledge that the present invention can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the above disclosed embodiments are only illustrative in all respects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310037772.1A CN116003004B (en) | 2023-01-10 | 2023-01-10 | Cement production process coupled with carbon dioxide capturing, electrocatalytic and oxygen-enriched combustion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310037772.1A CN116003004B (en) | 2023-01-10 | 2023-01-10 | Cement production process coupled with carbon dioxide capturing, electrocatalytic and oxygen-enriched combustion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116003004A CN116003004A (en) | 2023-04-25 |
| CN116003004B true CN116003004B (en) | 2024-05-28 |
Family
ID=86033704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310037772.1A Active CN116003004B (en) | 2023-01-10 | 2023-01-10 | Cement production process coupled with carbon dioxide capturing, electrocatalytic and oxygen-enriched combustion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116003004B (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101314102A (en) * | 2008-05-30 | 2008-12-03 | 西安热工研究院有限公司 | Carbon dioxide capture method and device in flue gas of coal-fired power plant |
| CN201244430Y (en) * | 2008-05-30 | 2009-05-27 | 西安热工研究院有限公司 | Apparatus for collecting carbonic anhydride in coal-fired plant flue gas |
| EP2559472A1 (en) * | 2011-08-15 | 2013-02-20 | Alstom Technology Ltd. | Integrated carbon dioxide capture for cement plants |
| CN103143249A (en) * | 2013-03-06 | 2013-06-12 | 上海锅炉厂有限公司 | Method and device for capturing carbon dioxide in flue gas of power station boiler |
| CN103372365A (en) * | 2013-07-04 | 2013-10-30 | 天津大学 | Cement kiln waste heat power generation auxiliary carbon dioxide capture system device |
| CN104313631A (en) * | 2014-10-10 | 2015-01-28 | 昆明理工大学 | Method and device for preparing carbon monoxide through carrying out phase interface electrochemical catalytic reduction on carbon dioxide |
| AU2017201565A1 (en) * | 2016-03-07 | 2017-09-21 | Siddons Enertec Pty Ltd | Method and apparatus for collection of carbon dioxide from a calcining or combustion process |
| CN110921667A (en) * | 2019-12-27 | 2020-03-27 | 天津健威泽节能环保科技股份有限公司 | System for capturing and purifying carbon dioxide in cement clinker production line and implementation method |
| KR20200065164A (en) * | 2018-11-29 | 2020-06-09 | (주)평화엔지니어링 | The all in one type system of carbon dioxide collecting and transforming into carbonated mineral at cement industry |
| EP3744700A1 (en) * | 2019-05-28 | 2020-12-02 | HeidelbergCement AG | Improved process and device for carbonating concrete waste and/or sequestering co2 |
| CN113350989A (en) * | 2021-04-23 | 2021-09-07 | 东南大学 | Carbon dioxide capture method and system for coal-fired power generation coupled with renewable energy power generation |
| DE102020118546A1 (en) * | 2020-07-14 | 2022-01-20 | Khd Humboldt Wedag Gmbh | Process for operating a plant for the production of cement clinker |
| CN114931853A (en) * | 2022-07-26 | 2022-08-23 | 苏州博纽强新材料科技有限公司 | Trapping CO in cement kiln flue gas 2 Method for synergistically preparing low-carbon cement and obtained product |
| CN115449822A (en) * | 2022-09-26 | 2022-12-09 | 南开大学 | Method for preparing cement and/or carbonaceous product by converting calcium carbonate based on electrochemical method |
-
2023
- 2023-01-10 CN CN202310037772.1A patent/CN116003004B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101314102A (en) * | 2008-05-30 | 2008-12-03 | 西安热工研究院有限公司 | Carbon dioxide capture method and device in flue gas of coal-fired power plant |
| CN201244430Y (en) * | 2008-05-30 | 2009-05-27 | 西安热工研究院有限公司 | Apparatus for collecting carbonic anhydride in coal-fired plant flue gas |
| EP2559472A1 (en) * | 2011-08-15 | 2013-02-20 | Alstom Technology Ltd. | Integrated carbon dioxide capture for cement plants |
| CN103143249A (en) * | 2013-03-06 | 2013-06-12 | 上海锅炉厂有限公司 | Method and device for capturing carbon dioxide in flue gas of power station boiler |
| CN103372365A (en) * | 2013-07-04 | 2013-10-30 | 天津大学 | Cement kiln waste heat power generation auxiliary carbon dioxide capture system device |
| CN104313631A (en) * | 2014-10-10 | 2015-01-28 | 昆明理工大学 | Method and device for preparing carbon monoxide through carrying out phase interface electrochemical catalytic reduction on carbon dioxide |
| AU2017201565A1 (en) * | 2016-03-07 | 2017-09-21 | Siddons Enertec Pty Ltd | Method and apparatus for collection of carbon dioxide from a calcining or combustion process |
| KR20200065164A (en) * | 2018-11-29 | 2020-06-09 | (주)평화엔지니어링 | The all in one type system of carbon dioxide collecting and transforming into carbonated mineral at cement industry |
| EP3744700A1 (en) * | 2019-05-28 | 2020-12-02 | HeidelbergCement AG | Improved process and device for carbonating concrete waste and/or sequestering co2 |
| CN110921667A (en) * | 2019-12-27 | 2020-03-27 | 天津健威泽节能环保科技股份有限公司 | System for capturing and purifying carbon dioxide in cement clinker production line and implementation method |
| DE102020118546A1 (en) * | 2020-07-14 | 2022-01-20 | Khd Humboldt Wedag Gmbh | Process for operating a plant for the production of cement clinker |
| CN113350989A (en) * | 2021-04-23 | 2021-09-07 | 东南大学 | Carbon dioxide capture method and system for coal-fired power generation coupled with renewable energy power generation |
| CN114931853A (en) * | 2022-07-26 | 2022-08-23 | 苏州博纽强新材料科技有限公司 | Trapping CO in cement kiln flue gas 2 Method for synergistically preparing low-carbon cement and obtained product |
| CN115449822A (en) * | 2022-09-26 | 2022-12-09 | 南开大学 | Method for preparing cement and/or carbonaceous product by converting calcium carbonate based on electrochemical method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116003004A (en) | 2023-04-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109301283B (en) | An integrated coal gasification fuel cell system with CO2 capture | |
| CN103303877B (en) | Many sources of the gas low concentration SO 2smoke comprehensive reclaims acid-making process flow process | |
| CN113350989A (en) | Carbon dioxide capture method and system for coal-fired power generation coupled with renewable energy power generation | |
| CN104722177B (en) | A kind of carbon dioxide capture system for concentrating conversion and electrolytic regeneration | |
| CN108729965B (en) | Partially oxygen-enriched combustion power generation system and CO2 capture method combining calcium-based chains | |
| CN109148919B (en) | Integrated coal gasification fuel cell power generation system and method utilizing gas high-temperature sensible heat | |
| CN114262902A (en) | Coal-fired power plant carbon capture coupled with electrolysis of water to produce hydrogen co-product chemical system and method | |
| CN109361001A (en) | A kind of integral coal gasification solid oxide fuel cell power generating system and technique | |
| CN101780371A (en) | Method for jointly removing carbon dioxide and sulfur dioxide from smoke | |
| CN204710062U (en) | The carbon dioxide capture device of a kind of concentrated conversion and electrolytic regeneration | |
| EP4443051A1 (en) | Nitrogen-free combustion and carbon dioxide capture and utilization process for gas-fired boiler | |
| CN109473702A (en) | A solid oxide fuel cell exhaust gas treatment system and treatment method | |
| CN112811454A (en) | System and method for comprehensively utilizing sulfur-containing flue gas and fly ash of boiler | |
| JP2004174370A (en) | Method, apparatus and system for treating gas | |
| CN112499651A (en) | Method and device for preparing sodium bicarbonate by electrochemically capturing carbon dioxide | |
| CN113416131B (en) | Methods and devices for producing methyl formate and purifying natural gas through carbon capture in gas-fired power plants | |
| CN216712257U (en) | Coal fired power plant carbon capture coupling water electrolysis hydrogen production coproduction chemical industry strain system | |
| CN116003004B (en) | Cement production process coupled with carbon dioxide capturing, electrocatalytic and oxygen-enriched combustion | |
| WO2024169042A1 (en) | System and method for boiler flue gas desulfurization and carbon dioxide resource utilization | |
| WO2024239672A1 (en) | Method and system for utilization of waste heat from converter gas and production of hydrogen | |
| CN109266373B (en) | A coal chemical power polygeneration system based on calcium-based compounds | |
| CN210092233U (en) | A molten carbonate fuel cell and calcium cycle integrated system | |
| CN215855145U (en) | A system for comprehensive utilization of boiler sulfur-containing flue gas and fly ash | |
| CN217264848U (en) | Device for preparing hydrogen by utilizing low-carbon coal | |
| CN104722197B (en) | A kind of calcium copper combines chemical round-robin method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20230920 Address after: 241000 Floor 16-18, Building 5, Science and Technology Industrial Park, Hi-tech Industrial Development Zone, Yijiang District, Wuhu City, Anhui Province Applicant after: Three Carbon (Anhui) Science and Technology Research Institute Co.,Ltd. Applicant after: NANKAI University Address before: 241000 Floor 16-18, Building 5, Science and Technology Industrial Park, Hi-tech Industrial Development Zone, Yijiang District, Wuhu City, Anhui Province Applicant before: Three Carbon (Anhui) Science and Technology Research Institute Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |