CN107286992A - 煤化工含硫、含氨工艺废气零排放工艺 - Google Patents

煤化工含硫、含氨工艺废气零排放工艺 Download PDF

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Publication number
CN107286992A
CN107286992A CN201610190239.9A CN201610190239A CN107286992A CN 107286992 A CN107286992 A CN 107286992A CN 201610190239 A CN201610190239 A CN 201610190239A CN 107286992 A CN107286992 A CN 107286992A
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tail gas
gasification furnace
sulphur
sulfur
coal chemical
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张九根
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/46—Gasification of granular or pulverulent flues in suspension
    • C10J3/48—Apparatus; Plants
    • C10J3/50—Fuel charging devices
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/02—Preparation of sulfur; Purification
    • C01B17/04—Preparation of sulfur; Purification from gaseous sulfur compounds including gaseous sulfides
    • 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
    • C10K1/002—Removal of contaminants
    • 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
    • C10K1/002—Removal of contaminants
    • C10K1/003—Removal of contaminants of acid contaminants, e.g. acid gas removal
    • C10K1/004—Sulfur containing contaminants, e.g. hydrogen sulfide
    • 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
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J2300/00—Details of gasification processes
    • C10J2300/12—Heating the gasifier
    • C10J2300/1215—Heating the gasifier using synthesis gas as fuel
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J2300/00—Details of gasification processes
    • C10J2300/16—Integration of gasification processes with another plant or parts within the plant
    • C10J2300/1603—Integration of gasification processes with another plant or parts within the plant with gas treatment

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Organic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Gas Separation By Absorption (AREA)

Abstract

本发明应用于煤化工领域的硫磺回收装置制硫尾气的处理。主要解决煤化工领域中硫磺回收装置制硫尾气的处理。该发明是将制硫尾气(CLUS尾气)通过加氢反应将单质硫、二氧化硫还原成硫化氢，水洗冷却脱除加氢尾气中的水和杂质，通过压缩机增压后一部分作为气化炉引压管、看火孔保护气进入气化炉，其余直接进入气化炉，若是用于粉煤加料苍密相输送介质，需要在压缩机前加气柜，对粉煤加料均压排放的废气进行回收循环使用，避免排放造成污染环境。从而实现煤化工含硫、含氨工艺废气零排放的目标。

Description

煤化工含硫、含氨工艺废气零排放工艺
技术领域：
本发明应用于煤化工领域的废气处理。
技术背景：
随着环境治理的加强，新的污染物排放标准《石油化学工业污染物排放标准GB31571-2015》的颁布，要求排放废气中二氧化硫浓度小于100mg/m3,特殊地区二氧化硫排放浓度小于50mg/m3。传统的硫回收工艺，甚至clus+scot工艺都将不能满足该排放标准要求，现在解决的方案基本上是将clus制硫尾气进行进一步的处理，如氨法脱硫、碱法脱硫或是离子液吸收工艺，这些工艺都存在一些缺点：如设备腐蚀严重、投资大、运行费用大、甚至产生高浓盐废水及少量含硫、含氨尾气排放。
发明内容：
该发明是将煤化工中的硫回收装置(CLUS)的制硫尾气引进气化炉内处理，若是粉煤气化炉时可用于气化炉加压料苍粉煤输送介质。
附图说明：附图1是制硫尾气用作粉煤输送介质工艺流程示意图。
附图2是制硫尾气直接进气化炉工艺流程示意图。
具体实施方式
将低温甲醇洗酸性气、含氨酸性气(又称变换不凝气)通过硫回收装置(CLUS)进行一段高温、两级低温催化反应回收硫磺，回收硫磺的制硫尾气(CLUS尾气)加热后进入加氢反应，将制硫尾气中的单质硫、二氧化硫还原成硫化氢，加氢后的尾气进入水洗塔水洗冷却，脱除加氢尾气中的水和杂质。水洗冷却后的尾气通过压缩机增压后一部分作为气化炉引压管、看火孔保护气进入气化炉，其余直接进入气化炉。从而实现煤化工含硫、含氨工艺废气零排放的目标。若是用于粉煤加料苍密相输送介质，需要在压缩机前加气柜，对粉煤加料苍均压排放的废气进行回收循环使用，避免排放造成污染环境。为了避免制硫尾气中的氮气对气化后续工段的影响和氨分解效果，硫回收装置可采用富氧(纯氧)工艺。

Claims (1)

1.本发明应用于煤化工领域的硫磺回收装置制硫尾气的处理。该工艺技术具有以下特点：
(1)投资少、操作费用低，作为粉煤气化炉加料仓密相输送介质更具有以上优势；
(2)设备腐蚀少；
(3)能实现煤化工含硫、含氨工艺废气零排放的目标。
该发明权利要求如下：
(1)保护将制硫尾气(CLUS尾气)引进气化炉内工艺方案。
(2)保护将制硫尾气(CLUS尾气)通过加氢反应将单质硫、二氧化硫还原成硫化氢，水洗冷却脱除加氢尾气中的水和杂质，通过压缩机增压后一部分作为气化炉引压管、看火孔保护气进入气化炉，其余直接进入气化炉的工艺流程。
(3)保护将制硫尾气(CLUS尾气)通过加氢反应将单质硫、二氧化硫还原成硫化氢，水洗冷却脱除加氢尾气中的水和杂质，通过压缩机增压后作为气化粉煤加料仓密相输送介质进入气化炉的工艺流程。
CN201610190239.9A 2016-03-31 2016-03-31 煤化工含硫、含氨工艺废气零排放工艺 Pending CN107286992A (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111362330A (zh) * 2020-03-24 2020-07-03 上海交通大学 一种二氧化硫梯级还原制备硫化氢的方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090092524A1 (en) * 2005-04-20 2009-04-09 Fluor Technologies Corporation Configurations And Methods for Claus Plant Operation with Variable Sulfur Content
CN104185605A (zh) * 2011-09-21 2014-12-03 氟石科技公司 处理含硫排放气体的构造和方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090092524A1 (en) * 2005-04-20 2009-04-09 Fluor Technologies Corporation Configurations And Methods for Claus Plant Operation with Variable Sulfur Content
CN104185605A (zh) * 2011-09-21 2014-12-03 氟石科技公司 处理含硫排放气体的构造和方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
李大东: "《加氢处理工艺与工程》", 31 December 2004, 中国石化出版社 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111362330A (zh) * 2020-03-24 2020-07-03 上海交通大学 一种二氧化硫梯级还原制备硫化氢的方法
CN111362330B (zh) * 2020-03-24 2021-10-01 上海交通大学 一种二氧化硫梯级还原制备硫化氢的方法

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Application publication date: 20171024