CN104388127B - 一种焦炉煤气净化的方法和装置 - Google Patents
一种焦炉煤气净化的方法和装置 Download PDFInfo
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- CN104388127B CN104388127B CN201410651179.7A CN201410651179A CN104388127B CN 104388127 B CN104388127 B CN 104388127B CN 201410651179 A CN201410651179 A CN 201410651179A CN 104388127 B CN104388127 B CN 104388127B
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- tower
- tar
- coke
- recovery tower
- liquefied ammonia
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- 238000000746 purification Methods 0.000 title claims abstract description 27
- 239000000571 coke Substances 0.000 title claims abstract description 26
- OKKJLVBELUTLKV-UHFFFAOYSA-N methanol Chemical compound data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0nMS4wJyBlbmNvZGluZz0naXNvLTg4NTktMSc/Pgo8c3ZnIHZlcnNpb249JzEuMScgYmFzZVByb2ZpbGU9J2Z1bGwnCiAgICAgICAgICAgICAgeG1sbnM9J2h0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnJwogICAgICAgICAgICAgICAgICAgICAgeG1sbnM6cmRraXQ9J2h0dHA6Ly93d3cucmRraXQub3JnL3htbCcKICAgICAgICAgICAgICAgICAgICAgIHhtbG5zOnhsaW5rPSdodHRwOi8vd3d3LnczLm9yZy8xOTk5L3hsaW5rJwogICAgICAgICAgICAgICAgICB4bWw6c3BhY2U9J3ByZXNlcnZlJwp3aWR0aD0nMzAwcHgnIGhlaWdodD0nMzAwcHgnIHZpZXdCb3g9JzAgMCAzMDAgMzAwJz4KPCEtLSBFTkQgT0YgSEVBREVSIC0tPgo8cmVjdCBzdHlsZT0nb3BhY2l0eToxLjA7ZmlsbDojRkZGRkZGO3N0cm9rZTpub25lJyB3aWR0aD0nMzAwLjAnIGhlaWdodD0nMzAwLjAnIHg9JzAuMCcgeT0nMC4wJz4gPC9yZWN0Pgo8cGF0aCBjbGFzcz0nYm9uZC0wIGF0b20tMCBhdG9tLTEnIGQ9J00gMTc3LjAsMTUwLjAgTCAxMDMuOCwxNTAuMCcgc3R5bGU9J2ZpbGw6bm9uZTtmaWxsLXJ1bGU6ZXZlbm9kZDtzdHJva2U6I0U4NDIzNTtzdHJva2Utd2lkdGg6Mi4wcHg7c3Ryb2tlLWxpbmVjYXA6YnV0dDtzdHJva2UtbGluZWpvaW46bWl0ZXI7c3Ryb2tlLW9wYWNpdHk6MScgLz4KPHBhdGggY2xhc3M9J2JvbmQtMCBhdG9tLTAgYXRvbS0xJyBkPSdNIDEwMy44LDE1MC4wIEwgMzAuNSwxNTAuMCcgc3R5bGU9J2ZpbGw6bm9uZTtmaWxsLXJ1bGU6ZXZlbm9kZDtzdHJva2U6IzNCNDE0MztzdHJva2Utd2lkdGg6Mi4wcHg7c3Ryb2tlLWxpbmVjYXA6YnV0dDtzdHJva2UtbGluZWpvaW46bWl0ZXI7c3Ryb2tlLW9wYWNpdHk6MScgLz4KPHRleHQgeD0nMjIzLjEnIHk9JzE3MC4wJyBjbGFzcz0nYXRvbS0wJyBzdHlsZT0nZm9udC1zaXplOjQwcHg7Zm9udC1zdHlsZTpub3JtYWw7Zm9udC13ZWlnaHQ6bm9ybWFsO2ZpbGwtb3BhY2l0eToxO3N0cm9rZTpub25lO2ZvbnQtZmFtaWx5OnNhbnMtc2VyaWY7dGV4dC1hbmNob3I6c3RhcnQ7ZmlsbDojRTg0MjM1JyA+TzwvdGV4dD4KPHRleHQgeD0nMjUwLjcnIHk9JzE3MC4wJyBjbGFzcz0nYXRvbS0wJyBzdHlsZT0nZm9udC1zaXplOjQwcHg7Zm9udC1zdHlsZTpub3JtYWw7Zm9udC13ZWlnaHQ6bm9ybWFsO2ZpbGwtb3BhY2l0eToxO3N0cm9rZTpub25lO2ZvbnQtZmFtaWx5OnNhbnMtc2VyaWY7dGV4dC1hbmNob3I6c3RhcnQ7ZmlsbDojRTg0MjM1JyA+SDwvdGV4dD4KPC9zdmc+Cg== data:image/svg+xml;base64,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 OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims abstract description 60
- 238000011084 recovery Methods 0.000 claims abstract description 58
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Chemical compound data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000007788 liquid Substances 0.000 claims abstract description 24
- 239000003034 coal gas Substances 0.000 claims abstract description 21
- CURLTUGMZLYLDI-UHFFFAOYSA-N carbon dioxide Chemical compound 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- 239000001569 carbon dioxide Substances 0.000 claims abstract description 20
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 20
- 238000004140 cleaning Methods 0.000 claims abstract description 16
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- 238000009833 condensation Methods 0.000 claims abstract description 8
- 230000005494 condensation Effects 0.000 claims abstract description 8
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 8
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- 239000007789 gas Substances 0.000 claims description 59
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium monoxide Chemical compound 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[Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 16
- 239000000292 calcium oxide Substances 0.000 claims description 8
- 239000002826 coolant Substances 0.000 claims description 8
- 239000007921 spray Substances 0.000 claims description 7
- 230000001172 regenerating Effects 0.000 claims description 6
- 230000003534 oscillatory Effects 0.000 claims description 4
- 239000006227 byproduct Substances 0.000 claims description 3
- HIVLDXAAFGCOFU-UHFFFAOYSA-N Ammonium hydrosulfide Chemical compound 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[NH4+].[SH-] HIVLDXAAFGCOFU-UHFFFAOYSA-N 0.000 claims description 2
- 239000012024 dehydrating agents Substances 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims description 2
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- 238000010248 power generation Methods 0.000 claims description 2
- 239000000446 fuel Substances 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 3
- 239000012535 impurity Substances 0.000 abstract description 2
- 238000001556 precipitation Methods 0.000 abstract 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L Calcium hydroxide Chemical compound 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[OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 3
- 239000000920 calcium hydroxide Substances 0.000 description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 3
- RWSOTUBLDIXVET-UHFFFAOYSA-N dihydrogen sulfide Chemical compound data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 3
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- UHOVQNZJYSORNB-UHFFFAOYSA-N benzene Chemical compound 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C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 2
- UFWIBTONFRDIAS-UHFFFAOYSA-N naphthalene Chemical compound 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C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N calcium Chemical compound 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[Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000006481 deamination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 125000001477 organic nitrogen group Chemical group 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol Chemical compound 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- 238000011069 regeneration method Methods 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/04—Purifying combustible gases containing carbon monoxide by cooling to condense non-gaseous materials
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/04—Purifying combustible gases containing carbon monoxide by cooling to condense non-gaseous materials
- C10K1/046—Reducing the tar content
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/08—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors
- C10K1/10—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids
Abstract
本发明涉及一种焦炉煤气净化的方法，过程是：焦炉煤气通过初冷器用水间接冷却到300～500℃，脱水塔脱水至水含量5～10ppm进入焦油回收塔，冷凝析出液态焦油外排，进入液氨回收塔冷却到‑30～‑50℃析出液态氨外排，经过甲醇洗涤塔脱除杂质，洁净焦炉煤气进净煤气罐。焦炉煤气净化的装置包括初冷器、脱水塔、焦油回收塔、液氨回收塔和甲醇洗涤塔并依次相连。焦油回收塔和液氨回收塔分别与液态二氧化碳管路连接，焦油回收塔的塔底出口与焦油回收设备连接，液氨回收塔的塔底出口与液氨回收设备连接。本发明通过冷却、脱水、分离焦油和氨，再经甲醇洗涤过程，脱除煤气中的杂质及有害物质，扩大了清洁燃料的来源，有利于提高优质燃料的质量，减少大气污染。
Description
技术领域
[0001]本发明属于化工产品精制技术领域，涉及一种焦炉煤气净化的方法和装置。
背景技术
[0002]焦炉煤气净化传统工艺是焦炉煤气在桥管和集气管中用大量循环氨水喷洒，使煤气冷却到82〜86 °C，再在煤气初冷器中冷却到25〜35°C。初冷器后的煤气，经电捕焦油器捕集焦油雾后进入鼓风机，由鼓风机以25000pa压力送至煤气洗涤净化工段。再分别经过脱硫化氢、脱氨、脱苯工段，然后净化后的煤气外送，如果作为生产LNG的原料气还需要进一步的深度净化。焦炉煤气净化传统工艺产生大量的废水，废水中含有苯、萘、酚(200〜400mg.L—1XNH4+^(200〜600mg.L—3、有机氮(100〜150mg.L—O、CN—(2〜7mg.1^)2-740^(200〜500mg.L—3，成分复杂，难于处理，一般处理方法都达不到排放标准且处理费用较高。
发明内容
[0003]本发明的目的是提供一种焦炉煤气净化的方法，以解决净化过程中产生大量废水难于处理和和处理费用高的问题，有利于减少环境污染和降低生产成本;本发明的另一目的是提供一种实现上述方法的装置。
[0004]本发明焦炉煤气净化的方法，过程是:650〜750°C的焦炉煤气通过初冷器用水间接冷却到300〜500°C。冷却后的焦炉煤气经脱水塔脱水至水含量5〜1ppm进入焦油回收塔，用冷却介质冷凝析出液态焦油并汇集在焦油回收塔底外排，或焦炉煤气在脱水塔中脱水的同时，加入冷却介质冷凝析出焦油汇集冷却塔底外排。脱除焦油后的焦炉煤气进入液氨回收塔，以液态二氧化碳为制冷剂将焦炉煤气冷却到-30〜-50°C，析出液态氨并汇集在塔底收集外排。脱除氨的焦炉煤气经过甲醇洗涤塔，脱除焦炉煤气中的硫化氢、二氧化碳和微量焦油，洗涤后的洁净焦炉煤气进净煤气罐。
[0005]冷却介质为液态二氧化碳，所述脱水的脱水剂为氧化钙，所述二氧化碳的粒径为1mm〜50mm。焦炉煤气水冷时产生副产水蒸气用于汽轮机发电或蒸汽动力源。甲醇洗涤塔的操作温度为-50〜-60°C。
[0006]本发明焦炉煤气净化的装置，包括初冷器和脱水塔，初冷器进料口与焦炉煤气管路连接，出料口与脱水塔连接，其特征是:所述装置还设有液氨回收塔和甲醇洗涤塔，选择设有焦油回收塔。脱水塔与焦油回收塔或液氨回收塔连接，液氨回收塔和甲醇洗涤塔连接，甲醇洗涤塔与净煤气罐连接。选择设有焦油回收塔时，焦油回收塔与液氨回收塔连接。焦油回收塔和液氨回收塔分别与液态二氧化碳管路连接，焦油回收塔的塔底出口与焦油回收设备连接，液氨回收塔的塔底出口与液氨回收设备连接。
[0007]脱水塔为12层振动式筛板塔，甲醇洗涤塔为喷淋塔。装置设有甲醇再生设备和氧化钙再生设备。脱水塔的塔顶设有电捕焦油器。
[0008]本发明焦炉煤气净化的方法，通过冷却、脱水、分离焦油和氨，再经甲醇洗涤过程，脱除煤气中的杂质及有害物质，得到洁净的煤气用作生产LNG的原料，有效利用了焦化过程的副产焦炉煤气，扩大了清洁燃料的来源，有利于提高优质燃料的质量，减少大气污染。焦炉煤气净化的装置为实现焦炉煤气净化过程提供了设备保障。本发明流程简单，设备投资小，易于实施。
附图说明
[0009]图1为本发明焦炉煤气净化装置的流程示意图；
[0010]图2为本发明另一实施方案的流程示意图。
[0011]其中:
[0012] ! 一初冷器、2 一脱水塔、3 一焦油回收塔、4 一液氨回收塔、5—甲醇洗涤塔、6—电捕焦油器。
具体实施方式
[0013]下面结合实施例和附图对本发明进行详细说明。本发明保护范围不限于实施例，本领域技术人员在权利要求限定的范围内做出任何改动也属于本发明保护的范围。
[0014] 实施例1
[0015]本发明焦炉煤气净化的装置如图1所示，包括初冷器1、脱水塔2、焦油回收塔3、液氨回收塔4和甲醇洗涤塔5。初冷器进料口与焦炉煤气管路连接，初冷器、脱水塔、焦油回收塔、液氨回收塔和甲醇洗涤塔依次连接，甲醇洗涤塔与净煤气罐连接。焦油回收塔和液氨回收塔分别与液态二氧化碳管路连接，焦油回收塔的塔底出口与焦油回收设备连接，液氨回收塔的塔底出口与液氨回收设备连接。脱水塔2为12层振动式筛板塔，甲醇洗涤塔为喷淋塔，装置设有甲醇再生设备和氧化钙再生设备。
[0016]本发明焦炉煤气的净化方法，过程是:700°C的焦炉煤气进入初冷器I用水间接冷却到400°C，:冷却后的焦炉煤气经脱水塔2脱水至水含量Sppm进入焦油回收塔3，用液态二氧化碳为冷却介质冷凝析出液态焦油，并汇集在焦油回收塔的塔底排放到焦油储罐。液态二氧化碳从塔顶喷淋与底部进入的煤气逆向接触，将煤气冷却到20〜50°C，此时煤气中绝大部分焦油以液态形式冷凝析出汇集塔底，小部分焦油形成雾状，由塔顶的电捕焦油器收集，二氧化碳气化后进入焦炉煤气中。脱除焦油后的焦炉煤气进入液氨回收塔4，以液态二氧化碳为制冷剂将焦炉煤气冷却到_40°C，析出液态氨并汇集在液氨回收塔的塔底收集排放到液氨储罐。脱除氨的焦炉煤气经过甲醇洗涤塔5，以甲醇为吸收介质，从塔顶喷淋与底部进入的煤气逆向接触，脱除尾气中的硫化氢、二氧化碳和微量焦油，洗涤后的洁净焦炉煤气进净煤气罐。洁净焦炉煤气用作生产LNG的原料气。由低温甲醇洗涤塔出来的富液甲醇，经过再生工段，分别回收硫化氢和二氧化碳，从而使甲醇循环使用。完成脱水和焦油回收过程后氧化钙进行再生，再生过程为脱水塔加热升温至380-500°C脱除焦油，在500°C以上时分解氢氧化钙回收纯净水蒸气，既回收氢氧化钙中焦油，又氢氧化钙再生成氧化钙，整个过程中不产生任何废水。
[0017] 实施例2
[0018]本发明焦炉煤气净化的装置如图2所示，包括初冷器1、脱水塔2、液氨回收塔4和甲醇洗涤塔5。初冷器、脱水塔、液氨回收塔和甲醇洗涤塔依次连接，甲醇洗涤塔与净煤气罐连接。焦油回收塔和液氨回收塔分别与液态二氧化碳管路连接，焦油回收塔的塔底出口与焦油回收设备连接，液氨回收塔的塔底出口与液氨回收设备连接。脱水塔2为12层振动式筛板塔，甲醇洗涤塔为喷淋塔，装置设有甲醇再生设备和氧化钙再生设备。脱水塔2的塔顶设有电捕焦油器6。焦炉煤气在脱水塔2中脱水的同时，加入冷却介质液态二氧化碳，将煤气冷却至IJ20〜50°C，使得煤气中绝大部分焦油以液态形式冷凝吸附在氧化钙上，小部分焦油形成雾状，由塔顶的电捕焦油器收集。
Claims (9)
1.一种焦炉煤气净化的方法，过程是:650〜750°C的焦炉煤气通过初冷器(1)用水间接冷却到300〜500 °C，其特征是:冷却后的焦炉煤气经脱水塔(2)脱水至水含量5〜1ppm进入焦油回收塔(3)，用冷却介质冷凝析出液态焦油并汇集在焦油回收塔底外排，或焦炉煤气在脱水塔中脱水的同时，加入冷却介质冷凝析出焦油汇集冷却塔底外排;所述脱除焦油后的焦炉煤气进入液氨回收塔(4)，以液态二氧化碳为制冷剂将焦炉煤气冷却到-30〜-50°C，析出液态氨并汇集在塔底收集外排;脱除氨的焦炉煤气经过甲醇洗涤塔(5)，脱除焦炉煤气中的硫化氢、二氧化碳和微量焦油，洗涤后的洁净焦炉煤气进净煤气罐。
2.根据权利要求1所述焦炉煤气净化的方法，其特征是:所述冷却介质为液态二氧化碳;所述脱水的脱水剂为氧化钙，所述二氧化碳的粒径为1mm〜50mm。
3.根据权利要求1所述焦炉煤气净化的方法，其特征是:焦炉煤气水冷时产生副产水蒸气用于汽轮机发电或蒸汽动力源。
4.根据权利要求1所述焦炉煤气净化的方法，其特征是:所述甲醇洗涤塔(5)的操作温度-50 〜-60℃。
5.一种焦炉煤气净化的装置，包括初冷器(1)和脱水塔(2)，初冷器进料口与焦炉煤气管路连接，出料口与脱水塔连接，其特征是:所述装置还设有液氨回收塔(4)和甲醇洗涤塔(5)，选择设有焦油回收塔(3);所述脱水塔与焦油回收塔或液氨回收塔连接，液氨回收塔和甲醇洗涤塔连接，甲醇洗涤塔与净煤气罐连接;选择设有焦油回收塔时，焦油回收塔与液氨回收塔连接;所述焦油回收塔和液氨回收塔分别与液态二氧化碳管路连接，所述焦油回收塔的塔底出口与焦油回收设备连接，所述液氨回收塔的塔底出口与液氨回收设备连接。
6.根据权利要求5所述的焦炉煤气净化的装置，其特征是:所述脱水塔(2)为12层振动式筛板塔。
7.根据权利要求5所述的焦炉煤气净化的装置，其特征是:所述甲醇洗涤塔(5)为喷淋塔。
8.根据权利要求5所述的焦炉煤气净化的装置，其特征是:所述装置设有甲醇再生设备和氧化钙再生设备。
9.根据权利要求5所述的焦炉煤气净化的装置，其特征是:所述脱水塔(2)的塔顶设有电捕焦油器(6)。
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