CN112827512A - 一种脱硫脱硝剂及其制备方法 - Google Patents
一种脱硫脱硝剂及其制备方法 Download PDFInfo
- Publication number
- CN112827512A CN112827512A CN202011570792.8A CN202011570792A CN112827512A CN 112827512 A CN112827512 A CN 112827512A CN 202011570792 A CN202011570792 A CN 202011570792A CN 112827512 A CN112827512 A CN 112827512A
- Authority
- CN
- China
- Prior art keywords
- desulfurization
- temperature
- parts
- denitrification agent
- reactor
- 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.)
- Pending
Links
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 44
- 230000023556 desulfurization Effects 0.000 title claims abstract description 44
- 238000002360 preparation method Methods 0.000 title claims description 16
- 239000003245 coal Substances 0.000 claims abstract description 34
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 33
- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(3+);trinitrate Chemical compound [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000002994 raw material Substances 0.000 claims abstract description 25
- 239000000571 coke Substances 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910017604 nitric acid Inorganic materials 0.000 claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 36
- 238000000034 method Methods 0.000 claims description 25
- 239000003463 adsorbent Substances 0.000 claims description 23
- 238000001994 activation Methods 0.000 claims description 18
- 238000003763 carbonization Methods 0.000 claims description 18
- 238000001816 cooling Methods 0.000 claims description 18
- 238000001035 drying Methods 0.000 claims description 18
- 229910052757 nitrogen Inorganic materials 0.000 claims description 18
- 230000008569 process Effects 0.000 claims description 16
- 238000002309 gasification Methods 0.000 claims description 12
- 239000011265 semifinished product Substances 0.000 claims description 12
- 229910001220 stainless steel Inorganic materials 0.000 claims description 12
- 239000010935 stainless steel Substances 0.000 claims description 12
- 239000000853 adhesive Substances 0.000 claims description 10
- 230000001070 adhesive effect Effects 0.000 claims description 10
- 230000004913 activation Effects 0.000 claims description 7
- 238000002485 combustion reaction Methods 0.000 claims description 7
- 230000003213 activating effect Effects 0.000 claims description 6
- 238000010000 carbonizing Methods 0.000 claims description 6
- 238000007598 dipping method Methods 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 6
- 239000003077 lignite Substances 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- 238000000197 pyrolysis Methods 0.000 claims description 6
- 238000010992 reflux Methods 0.000 claims description 6
- 238000012216 screening Methods 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims 1
- 238000004064 recycling Methods 0.000 claims 1
- 238000001179 sorption measurement Methods 0.000 abstract description 16
- 239000003546 flue gas Substances 0.000 abstract description 12
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 10
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract description 8
- 230000003647 oxidation Effects 0.000 abstract description 8
- 238000007254 oxidation reaction Methods 0.000 abstract description 8
- 230000003197 catalytic effect Effects 0.000 abstract description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 5
- 239000011230 binding agent Substances 0.000 abstract description 5
- 229910052760 oxygen Inorganic materials 0.000 abstract description 5
- 239000001301 oxygen Substances 0.000 abstract description 5
- 239000000126 substance Substances 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 10
- 239000003570 air Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 125000000524 functional group Chemical group 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
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Inorganic materials O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
- B01J35/56—Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional monoliths
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8603—Removing sulfur compounds
- B01D53/8609—Sulfur oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
- B01D53/8628—Processes characterised by a specific catalyst
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/74—Iron group metals
- B01J23/745—Iron
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/0201—Impregnation
- B01J37/0207—Pretreatment of the support
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/08—Heat treatment
- B01J37/082—Decomposition and pyrolysis
- B01J37/084—Decomposition of carbon-containing compounds into carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2062—Ammonia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
- B01D2257/404—Nitrogen oxides other than dinitrogen oxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Analytical Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Biomedical Technology (AREA)
- Health & Medical Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Treating Waste Gases (AREA)
Abstract
本发明涉及烟气处理技术领域,且公开了一种脱硫脱硝剂,包括以下重量份的原料组成:原煤10‑15份黏结剂、5‑8份稀硝酸8‑13份、硝酸铁10‑15份。脱硫脱硝剂的表面对SO2具有吸附和催化氧化的作用,当烟气中没有氧和水蒸气存在时,活性焦吸附SO2仅为物理吸附,吸附量较小,而当烟气中有氧和水蒸气存在时,在物理吸附之外还发生化学吸附,吸附的SO2在活性焦的催化氧化下与烟气中的O2反应生成SO3,之后再和水蒸气反应生成硫酸,使其吸附量大为增加。
Description
技术领域
本发明涉及烟气处理技术领域,具体为一种脱硫脱硝剂及其制备方法。
背景技术
煤燃烧排放的SO2和NOx是主要的大气污染物,是造成酸雨和光化学烟雾的主要根源,多年来,国家对SO2和NOx的治理一直十分重视,随着对NOX控制标准的不断严格化,同时脱硫脱硝技术正受到各国的日益重视。
烟气脱硫脱硝技术是应用于多氮氧化物、硫氧化物生成化工工业的一项锅炉烟气净化技术。氮氧化物、硫氧化物是空气污染的主要来源之一。故应用此项技术对环境空气净化益处颇多。已知的烟气脱硫脱硝技术有PAFP、ACFP、软锰矿法、电子束氨法、脉冲电晕法、石膏湿法、催化氧化法、微生物降解法等技术。
目前,湿法烟气脱硫和催化还原脱硝是工业化应用最普遍的两种技术,然而该技术投资成本高、操作难度大,限制了其在中国的推广使用,迫切需要开发一种高效、低成本的脱硫脱硝技术,为此我们提出了一种脱硫脱硝剂及其制备方法。
发明内容
针对现有技术存在的上述不足,本发明提供了一种脱硫脱硝剂及其制备方法。
本发明提供如下技术方案:一种脱硫脱硝剂,包括以下重量份的原料组成:
原煤 10-15份
黏结剂 5-8份
稀硝酸 8-13份
硝酸铁 10-15份
优选的,一种脱硫脱硝剂,包括以下重量份的原料组成:
原煤 10份
黏结剂 5份
稀硝酸 8份
硝酸铁 10份
优选的,一种脱硫脱硝剂,包括以下重量份的原料组成:
原煤 12份
黏结剂 6份
稀硝酸 10份
硝酸铁 12份
优选的,一种脱硫脱硝剂,包括以下重量份的原料组成:
原煤 15份
黏结剂 8份
稀硝酸 13份
硝酸铁 15份
一种脱硫脱硝剂的制备方法,具体制备方法如下:
S1、原煤经过破碎筛分后,进入流化床轻度气化褐煤提质反应器内,原煤在提质反应器内经热空气流化后,在反应器内发生轻度气化、燃烧、干馏反应,控制反应器内的温度在合适的范围内,最后将原料导出;
S2、处理过的原煤经制粉工艺后,添加黏结剂,再经过挤出成型过程,并进行干燥处理,干燥后的原料进行碳化、活化处理,冷却后得到活性焦;
S3、将活性焦放入三口圆底烧瓶中,加人稀硝酸溶液,恒温85℃回流处理2h,取出样品水洗至pH值大于6,120℃干燥12h,样品装入管式不锈钢反应器,在氮气保护下,700℃恒温2h,降至室温即得半成品;
S4、将半成品浸渍到一定浓度的硝酸铁溶液,室温下放置2h后取出,在110℃的温度下干燥12h,在氮气保护下,700℃恒温2h,降至室温即得吸附剂。
优选的,在S2的碳化过程中,其碳化炉的碳化温度在450-550℃。
优选的,在S2的活化过程中,采用蒸汽活化工艺、其活化温度控制在750-950℃。
优选的,在S4中得到的吸附剂使用后,置入水中,搅拌30分钟并置入不锈钢反应器,在氮气流量100mL/min条件下,升温至700℃,恒温2h,降至室温后取出,即可重复利用。
该脱硫脱硝剂及其制备方法,与现有技术对比,本发明具备以下有益效果:
脱硫脱硝剂的表面对SO2具有吸附和催化氧化的作用,当烟气中没有氧和水蒸气存在时,活性焦吸附SO2仅为物理吸附,吸附量较小,而当烟气中有氧和水蒸气存在时,在物理吸附之外还发生化学吸附,吸附的SO2在活性焦的催化氧化下与烟气中的O2反应生成SO3,之后再和水蒸气反应生成硫酸,使其吸附量大为增加;
脱硫脱硝剂的表面对NOX具有吸附和催化氧化的作用,在活性焦吸附脱硫***中加入氨,可使NOX与NH发生催化还原反应,从而有效对NOX进行清除,
脱硫脱硝剂的孔隙内负载Fe2O3,能够进一步提高吸附剂脱硫活性,活性焦经改性处理后能够脱除其中的灰分,形成丰富的织状孔网结构,改善活性焦的表面性质,有利于SO2在半焦表面的吸附和氧化,负载的金属氧化物,一方面能够促进SO2的氧化,另一方面其本身与SO2也会发生相互作用,具有一定的固硫效果;
另外活性焦经改性处理后比表面积增大,表面含氧官能团和碱性官能团增多,有利于气体NO的吸附和氧化转化,脱硝活性明显提高。
具体实施方式
为了使本公开实施例的目的、技术方案和优点更加清楚,因此对本公开实施例的技术方案进行清楚、完整地描述,为了保持本公开实施例的以下说明清楚且简明,本公开省略了已知功能和已知部件的详细说明,以避免不必要地混淆本发明的概念。
一种脱硫脱硝剂,包括以下重量份的原料组成:
原煤 10-15份
黏结剂 5-8份
稀硝酸 8-13份
硝酸铁 10-15份
一种脱硫脱硝剂的制备方法,具体制备方法如下:
S1、原煤经过破碎筛分后,进入流化床轻度气化褐煤提质反应器内,原煤在提质反应器内经热空气流化后,在反应器内发生轻度气化、燃烧、干馏反应,控制反应器内的温度在合适的范围内,最后将原料导出;
S2、处理过的原煤经制粉工艺后,添加黏结剂,再经过挤出成型过程,并进行干燥处理,干燥后的原料进行碳化、活化处理,冷却后得到活性焦,其中碳化过程中,其碳化炉的碳化温度在450-550℃,活化过程中,采用蒸汽活化工艺、其活化温度控制在750-950℃;
S3、将活性焦放入三口圆底烧瓶中,加人稀硝酸溶液,恒温85℃回流处理2h,取出样品水洗至pH值大于6,120℃干燥12h,样品装入管式不锈钢反应器,在氮气保护下,700℃恒温2h,降至室温即得半成品;
S4、将半成品浸渍到一定浓度的硝酸铁溶液,室温下放置2h后取出,在110℃的温度下干燥12h,在氮气保护下,700℃恒温2h,降至室温即得吸附剂。
吸附剂使用后,置入水中,搅拌30分钟并置入不锈钢反应器,在氮气流量100mL/min条件下,升温至700℃,恒温2h,降至室温后取出,即可重复利用。
实施例1
一种脱硫脱硝剂,包括以下重量份的原料组成:
原煤 10份
黏结剂 5份
稀硝酸 8份
硝酸铁 10份
一种脱硫脱硝剂的制备方法,具体制备方法如下:
S1、原煤经过破碎筛分后,进入流化床轻度气化褐煤提质反应器内,原煤在提质反应器内经热空气流化后,在反应器内发生轻度气化、燃烧、干馏反应,控制反应器内的温度在合适的范围内,最后将原料导出;
S2、处理过的原煤经制粉工艺后,添加黏结剂,再经过挤出成型过程,并进行干燥处理,干燥后的原料进行碳化、活化处理,冷却后得到活性焦,其中碳化过程中,其碳化炉的碳化温度在450-550℃,活化过程中,采用蒸汽活化工艺、其活化温度控制在750-950℃;
S3、将活性焦放入三口圆底烧瓶中,加人稀硝酸溶液,恒温85℃回流处理2h,取出样品水洗至pH值大于6,120℃干燥12h,样品装入管式不锈钢反应器,在氮气保护下,700℃恒温2h,降至室温即得半成品;
S4、将半成品浸渍到一定浓度的硝酸铁溶液,室温下放置2h后取出,在110℃的温度下干燥12h,在氮气保护下,700℃恒温2h,降至室温即得吸附剂。
吸附剂使用后,置入水中,搅拌30分钟并置入不锈钢反应器,在氮气流量100mL/min条件下,升温至700℃,恒温2h,降至室温后取出,即可重复利用。
实施例2
一种脱硫脱硝剂,包括以下重量份的原料组成:
原煤 12份
黏结剂 6份
稀硝酸 10份
硝酸铁 12份
一种脱硫脱硝剂的制备方法,具体制备方法如下:
S1、原煤经过破碎筛分后,进入流化床轻度气化褐煤提质反应器内,原煤在提质反应器内经热空气流化后,在反应器内发生轻度气化、燃烧、干馏反应,控制反应器内的温度在合适的范围内,最后将原料导出;
S2、处理过的原煤经制粉工艺后,添加黏结剂,再经过挤出成型过程,并进行干燥处理,干燥后的原料进行碳化、活化处理,冷却后得到活性焦,其中碳化过程中,其碳化炉的碳化温度在450-550℃,活化过程中,采用蒸汽活化工艺、其活化温度控制在750-950℃;
S3、将活性焦放入三口圆底烧瓶中,加人稀硝酸溶液,恒温85℃回流处理2h,取出样品水洗至pH值大于6,120℃干燥12h,样品装入管式不锈钢反应器,在氮气保护下,700℃恒温2h,降至室温即得半成品;
S4、将半成品浸渍到一定浓度的硝酸铁溶液,室温下放置2h后取出,在110℃的温度下干燥12h,在氮气保护下,700℃恒温2h,降至室温即得吸附剂。
吸附剂使用后,置入水中,搅拌30分钟并置入不锈钢反应器,在氮气流量100mL/min条件下,升温至700℃,恒温2h,降至室温后取出,即可重复利用。
实施例3
一种脱硫脱硝剂,包括以下重量份的原料组成:
原煤 15份
黏结剂 8份
稀硝酸 13份
硝酸铁 15份
一种脱硫脱硝剂的制备方法,具体制备方法如下:
S1、原煤经过破碎筛分后,进入流化床轻度气化褐煤提质反应器内,原煤在提质反应器内经热空气流化后,在反应器内发生轻度气化、燃烧、干馏反应,控制反应器内的温度在合适的范围内,最后将原料导出;
S2、处理过的原煤经制粉工艺后,添加黏结剂,再经过挤出成型过程,并进行干燥处理,干燥后的原料进行碳化、活化处理,冷却后得到活性焦,其中碳化过程中,其碳化炉的碳化温度在450-550℃,活化过程中,采用蒸汽活化工艺、其活化温度控制在750-950℃;
S3、将活性焦放入三口圆底烧瓶中,加人稀硝酸溶液,恒温85℃回流处理2h,取出样品水洗至pH值大于6,120℃干燥12h,样品装入管式不锈钢反应器,在氮气保护下,700℃恒温2h,降至室温即得半成品;
S4、将半成品浸渍到一定浓度的硝酸铁溶液,室温下放置2h后取出,在110℃的温度下干燥12h,在氮气保护下,700℃恒温2h,降至室温即得吸附剂。
吸附剂使用后,置入水中,搅拌30分钟并置入不锈钢反应器,在氮气流量100mL/min条件下,升温至700℃,恒温2h,降至室温后取出,即可重复利用。
实验
按照实施例1、2、3的配方和工艺制成脱硫脱硝剂,并在实施例1、2、3制成脱硫脱硝剂中各取8组进行测试,在相同的环境下进行测试,且6小时就对其脱硫脱硝情况进行检测,详细数据如下:
按照实施例1、2、3的配方和工艺制成脱硫脱硝剂,在相同的环境下,在不同时间下,对脱硫脱硝情况进行检测,详细数据如下:
由此可看出,该脱硫脱硝剂在脱硫脱硝上,具有良好的效果。
以上实施例仅为本发明的示例性实施例,不用于限制本发明,本发明的保护范围由权利要求书限定。本领域技术人员可以在本发明的实质和保护范围内,对本发明做出各种修改或等同替换,这种修改或等同替换也应视为落在本发明的保护范围内。
Claims (8)
5.根据权利要求1-4任一所述的一种脱硫脱硝剂的制备方法,其特征在于,具体制备方法如下:
S1、原煤经过破碎筛分后,进入流化床轻度气化褐煤提质反应器内,原煤在提质反应器内经热空气流化后,在反应器内发生轻度气化、燃烧、干馏反应,控制反应器内的温度在合适的范围内,最后将原料导出;
S2、处理过的原煤经制粉工艺后,添加黏结剂,再经过挤出成型过程,并进行干燥处理,干燥后的原料进行碳化、活化处理,冷却后得到活性焦;
S3、将活性焦放入三口圆底烧瓶中,加人稀硝酸溶液,恒温85℃回流处理2h,取出样品水洗至pH值大于6,120℃干燥12h,样品装入管式不锈钢反应器,在氮气保护下,700℃恒温2h,降至室温即得半成品;
S4、将半成品浸渍到一定浓度的硝酸铁溶液,室温下放置2h后取出,在110℃的温度下干燥12h,在氮气保护下,700℃恒温2h,降至室温即得吸附剂。
6.根据权利要求5所述的一种脱硫脱硝剂的制备方法,其特征在于,在S2的碳化过程中,其碳化炉的碳化温度在450-550℃。
7.根据权利要求5所述的一种脱硫脱硝剂的制备方法,其特征在于,在S2的活化过程中,采用蒸汽活化工艺、其活化温度控制在750-950℃。
8.根据权利要求5所述的一种脱硫脱硝剂的制备方法,其特征在于,在S4中得到的吸附剂使用后,置入水中,搅拌30分钟并置入不锈钢反应器,在氮气流量100mL/min条件下,升温至700℃,恒温2h,降至室温后取出,即可重复利用。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202011570792.8A CN112827512A (zh) | 2020-12-26 | 2020-12-26 | 一种脱硫脱硝剂及其制备方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202011570792.8A CN112827512A (zh) | 2020-12-26 | 2020-12-26 | 一种脱硫脱硝剂及其制备方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN112827512A true CN112827512A (zh) | 2021-05-25 |
Family
ID=75924717
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202011570792.8A Pending CN112827512A (zh) | 2020-12-26 | 2020-12-26 | 一种脱硫脱硝剂及其制备方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN112827512A (zh) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63294942A (ja) * | 1987-05-26 | 1988-12-01 | Central Res Inst Of Electric Power Ind | 乾式脱硫吸着剤 |
CN102491324A (zh) * | 2011-11-29 | 2012-06-13 | 山西新华化工有限责任公司 | 一种高脱硝活性焦的制备方法 |
CN104229793A (zh) * | 2014-09-12 | 2014-12-24 | 中国华能集团清洁能源技术研究院有限公司 | 一种褐煤活性焦及其制备方法 |
CN104525116A (zh) * | 2014-12-31 | 2015-04-22 | 上海克硫环保科技股份有限公司 | 一种脱硫脱硝的改性活性焦及其制备方法 |
US20190046962A1 (en) * | 2016-12-23 | 2019-02-14 | Valiant Co., Ltd. | Method for preparing molecular sieve-multielement oxide composite integrally extruded denitration catalyst |
CN111704132A (zh) * | 2020-06-24 | 2020-09-25 | 中冶南方都市环保工程技术股份有限公司 | 活性焦及其制备方法和应用 |
CN111847448A (zh) * | 2020-07-07 | 2020-10-30 | 太原理工大学 | 一种基于废弃塑料粘结剂的柱状活性焦及其制备方法 |
-
2020
- 2020-12-26 CN CN202011570792.8A patent/CN112827512A/zh active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63294942A (ja) * | 1987-05-26 | 1988-12-01 | Central Res Inst Of Electric Power Ind | 乾式脱硫吸着剤 |
CN102491324A (zh) * | 2011-11-29 | 2012-06-13 | 山西新华化工有限责任公司 | 一种高脱硝活性焦的制备方法 |
CN104229793A (zh) * | 2014-09-12 | 2014-12-24 | 中国华能集团清洁能源技术研究院有限公司 | 一种褐煤活性焦及其制备方法 |
CN104525116A (zh) * | 2014-12-31 | 2015-04-22 | 上海克硫环保科技股份有限公司 | 一种脱硫脱硝的改性活性焦及其制备方法 |
US20190046962A1 (en) * | 2016-12-23 | 2019-02-14 | Valiant Co., Ltd. | Method for preparing molecular sieve-multielement oxide composite integrally extruded denitration catalyst |
CN111704132A (zh) * | 2020-06-24 | 2020-09-25 | 中冶南方都市环保工程技术股份有限公司 | 活性焦及其制备方法和应用 |
CN111847448A (zh) * | 2020-07-07 | 2020-10-30 | 太原理工大学 | 一种基于废弃塑料粘结剂的柱状活性焦及其制备方法 |
Non-Patent Citations (1)
Title |
---|
于英民等: "半焦吸附剂烟气脱硫脱硝性能", 《燃料化学学报》 * |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Knoblauch et al. | Application of active coke in processes of SO2-and NOx-removal from flue gases | |
JP3272367B2 (ja) | 脱硝用熱処理活性炭素繊維、その製造方法、それを用いた脱硝方法、及びそれを用いた脱硝システム | |
CN107213917B (zh) | 担载胺基化合物的复合脱硝催化剂及其制备方法和应用 | |
CN1126594C (zh) | 用于脱硫和脱硝的活性炭纤维、其用途和废气处理*** | |
CN111229209B (zh) | 一种荷叶源生物炭负载锰氧化物的低温scr烟气脱硝催化剂及其制备方法与应用 | |
JP2012245444A (ja) | 焼結炉排ガスの脱硫・脱硝方法 | |
CN104190478A (zh) | 一种脱硝脱硫活性炭催化剂再生方法 | |
CN108993476B (zh) | 金属氧化物-钒酸盐/TiO2催化剂及其制备方法和应用 | |
CN110548518A (zh) | 一种用于净化燃煤有机废气的过渡金属复合催化剂及其制备方法与应用 | |
CN110407210A (zh) | 一种活性炭基催化法脱硫工艺 | |
CN112892547A (zh) | 一种同时脱除氮氧化物和一氧化碳的催化剂及制备方法 | |
CN110102302B (zh) | 一种羰基硫净化用催化剂及其制备方法和应用 | |
KR101527028B1 (ko) | 활성화된 탄소 촉매 | |
CN113546644B (zh) | 焦炉煤气有机硫深度脱除催化剂的制备方法和应用 | |
US6106791A (en) | Exhaust gas treating systems | |
CN106984319B (zh) | 一种用于同时脱除烟气中氮氧化物和有机污染物的铁基复合催化剂及其制备方法 | |
CN106732547B (zh) | 低温氧化燃煤烟气中零价汞的脱汞催化剂及其制备方法 | |
CN112827512A (zh) | 一种脱硫脱硝剂及其制备方法 | |
CN112221488A (zh) | 一种协同脱硝脱汞的新型核壳结构催化剂及制备方法 | |
CN111375274B (zh) | 一种含so2气体的处理方法及装置 | |
KR101651220B1 (ko) | 암모니아 제거용 백금/바나듐/티타니아 촉매의 제조방법 | |
KR101329828B1 (ko) | 암모니아 제거용 텅스텐/티타니아 촉매와 그 제조방법 | |
KR102224335B1 (ko) | 가스상 암모니아를 질소로 전환하는 선택적 산화촉매 및 그 그 제조방법 | |
CN114210314B (zh) | 双前驱体炭基催化剂及其制备方法、脱除甲醛和汞的应用 | |
CN109647175A (zh) | 一种氰尿酸脱硝剂及其制备方法和应用 |
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 | ||
RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210525 |
|
RJ01 | Rejection of invention patent application after publication |