WO2022236795A1 - 一种染料分散蓝b56#的生产方法 - Google Patents

一种染料分散蓝b56#的生产方法 Download PDF

Info

Publication number
WO2022236795A1
WO2022236795A1 PCT/CN2021/093755 CN2021093755W WO2022236795A1 WO 2022236795 A1 WO2022236795 A1 WO 2022236795A1 CN 2021093755 W CN2021093755 W CN 2021093755W WO 2022236795 A1 WO2022236795 A1 WO 2022236795A1
Authority
WO
WIPO (PCT)
Prior art keywords
disperse blue
hydrolysis
production method
dinitrophenol
mother liquor
Prior art date
Application number
PCT/CN2021/093755
Other languages
English (en)
French (fr)
Inventor
丁振中
张超
朱萌
王士刚
高小燕
方祥
陈娇
陆金森
张万宏
徐俊山
Original Assignee
扬州日兴生物科技股份有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 扬州日兴生物科技股份有限公司 filed Critical 扬州日兴生物科技股份有限公司
Priority to PCT/CN2021/093755 priority Critical patent/WO2022236795A1/zh
Publication of WO2022236795A1 publication Critical patent/WO2022236795A1/zh

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C201/00—Preparation of esters of nitric or nitrous acid or of compounds containing nitro or nitroso groups bound to a carbon skeleton
    • C07C201/06—Preparation of nitro compounds
    • C07C201/12—Preparation of nitro compounds by reactions not involving the formation of nitro groups
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C201/00—Preparation of esters of nitric or nitrous acid or of compounds containing nitro or nitroso groups bound to a carbon skeleton
    • C07C201/06—Preparation of nitro compounds
    • C07C201/16—Separation; Purification; Stabilisation; Use of additives
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B1/00—Dyes with anthracene nucleus not condensed with any other ring
    • C09B1/50—Amino-hydroxy-anthraquinones; Ethers and esters thereof
    • C09B1/503—Amino-hydroxy-anthraquinones; Ethers and esters thereof unsubstituted amino-hydroxy anthraquinone

Definitions

  • the invention belongs to the technical field of chemical dyes, and in particular relates to a production method of dye disperse blue B56#.
  • the technical problem to be solved in the present invention is to provide a kind of production method of dye disperse blue B56#, effectively utilize the active ingredient in the mother liquor of hydrolysis recovery, reduce three waste discharges, produce by-product by acidification, filtration 2-4-Dinitrophenol.
  • a kind of production method of dye disperse blue B56# by utilizing sodium sulfite to treat 1-aminoanthraquinone DMF residue to purify and produce mixed nitrate, then the mixed nitrate is sequentially passed through mononitration, mononitration refining, condensation, dinitration, hydrolysis, reduction and In the process of bromination transformation, the product disperse blue B56# is finally obtained; the mother liquor recovered by hydrolysis is reprocessed to recover the by-product 2,4-dinitrophenol.
  • the production method of the dye disperse blue B56#, the reprocessing of the reclaimed mother liquor by hydrolysis specifically comprises the following steps:
  • step (2) Add activated carbon to the solution in step (1), stir and decolorize for 0.5 to 1 hour;
  • the production method of the dye disperse blue B56# the step (1) adding sulfuric acid to adjust the solution to a pH value of 4-7.
  • the filtrate in the step (3) is added to an acid adjustment tank to adjust the pH to ⁇ 1.0.
  • the reaction temperature in the step (1) is 60-70° C., and the reaction time is 0.5-1 h.
  • the mass fraction of the sulfuric acid is 90% to 98%, and the amount of the sulfuric acid is 40% to 50% of the mass of the mother liquor recovered by hydrolysis.
  • the ratio of the amount of activated carbon used in the step (2) to the mass of the recovered mother liquor by hydrolysis is 1:3 to 1:5.
  • the advantages of the present invention include:
  • Disperse blue B56# filter cake hydrolysis reaction process of the present invention produces 2,4-dinitrophenol sodium salt, and 2,4-dinitrophenol sodium salt is dissolved in the mother liquor recovered by hydrolysis, in order to effectively utilize the active ingredients therein, Reduce the discharge of three wastes, and produce the by-product 2-4-dinitrophenol through acidification and filtration.
  • the by-products all meet the standards and can be used as raw materials for the production of coating intermediates.
  • a kind of production method of dye disperse blue B56# by utilizing sodium sulfite to treat 1-aminoanthraquinone DMF residue to purify and produce mixed nitrate, then the mixed nitrate is sequentially passed through mononitration, mononitration refining, condensation, dinitration, hydrolysis, reduction and In the process of bromination transformation, the product disperse blue B56# is finally obtained; the mother liquor recovered by hydrolysis is reprocessed to recover the by-product 2,4-dinitrophenol.
  • the reprocessing of the recovered mother liquor by hydrolysis specifically includes the following steps:
  • step (2) Add activated carbon to the solution of step (1), stir and decolorize for 0.8h; the ratio of the consumption of activated carbon to the quality of the hydrolysis recovery mother liquor is 1:3;
  • the material is pumped into an activated carbon filter press to filter, the filter cake is squeezed dry, and the filtrate is collected in an acid adjustment kettle to adjust acid to a pH value less than 1.0, the feed liquid is pumped into a filter press to filter, and the filter cake is squeezed dry to obtain
  • the refined 2,4-dinitrophenol filter cake has a filter cake yield of 30% (the yield refers to the mass percentage of the filter cake to the mass of the mother liquor recovered by hydrolysis, the same below).
  • the refined 2,4-dinitrophenol filter cake was detected and analyzed, and the results are shown in Table 1. It can be seen from Table 1 that the by-product meets the requirements of relevant national product index standards and has good environmental friendliness from the test results of product appearance and purity.
  • the product should be kept away from fire, heat source and flammable during production and storage. , Combustibles, avoid mixing with oxidants and alkalis.
  • This product can be sold as a by-product and used as a raw material for the production of coating intermediates.
  • a kind of production method of dye disperse blue B56# by utilizing sodium sulfite to treat 1-aminoanthraquinone DMF residue to purify and produce mixed nitrate, then the mixed nitrate is sequentially passed through mononitration, mononitration refining, condensation, dinitration, hydrolysis, reduction and In the process of bromination transformation, the product disperse blue B56# is finally obtained; the mother liquor recovered by hydrolysis is reprocessed to recover the by-product 2,4-dinitrophenol.
  • the reprocessing of the recovered mother liquor by hydrolysis specifically includes the following steps:
  • step (2) Add activated carbon to the solution of step (1), stir and decolorize for 1h; the ratio of the consumption of activated carbon to the quality of the hydrolysis recovery mother liquor is 1:3;
  • the material is pumped into an activated carbon filter press to filter, the filter cake is squeezed dry, and the filtrate is collected in an acid adjustment kettle to adjust acid to a pH value less than 1.0, the feed liquid is pumped into a filter press to filter, and the filter cake is squeezed dry to obtain
  • the refined 2,4-dinitrophenol filter cake has a filter cake yield of 20%.
  • the refined 2,4-dinitrophenol filter cake was detected and analyzed, which met the requirements of relevant national product index standards.
  • a kind of production method of dye disperse blue B56# by utilizing sodium sulfite to treat 1-aminoanthraquinone DMF residue to purify and produce mixed nitrate, then the mixed nitrate is sequentially passed through mononitration, mononitration refining, condensation, dinitration, hydrolysis, reduction and In the process of bromination transformation, the product disperse blue B56# is finally obtained; the mother liquor recovered by hydrolysis is reprocessed to recover the by-product 2,4-dinitrophenol.
  • the reprocessing of the recovered mother liquor by hydrolysis specifically includes the following steps:
  • step (2) Add activated carbon to the solution of step (1), stir and decolorize for 1h; the ratio of the consumption of activated carbon to the quality of the mother liquor recovered by hydrolysis is 1:5;
  • the material is pumped into an activated carbon filter press to filter, the filter cake is squeezed dry, and the filtrate is collected in an acid adjustment kettle to adjust acid to a pH value less than 1.0, the feed liquid is pumped into a filter press to filter, and the filter cake is squeezed dry to obtain
  • the refined 2,4-dinitrophenol filter cake has a filter cake yield of 35%.
  • the refined 2,4-dinitrophenol filter cake was detected and analyzed, which met the requirements of relevant national product index standards.
  • a kind of production method of dye disperse blue B56# by utilizing sodium sulfite to treat 1-aminoanthraquinone DMF residue to purify and produce mixed nitrate, then the mixed nitrate is sequentially passed through mononitration, mononitration refining, condensation, dinitration, hydrolysis, reduction and In the process of bromination transformation, the product disperse blue B56# is finally obtained; the mother liquor recovered by hydrolysis is reprocessed to recover the by-product 2,4-dinitrophenol.
  • the reprocessing of the recovered mother liquor by hydrolysis specifically includes the following steps:
  • step (2) Add activated carbon to the solution of step (1), stir and decolorize for 1h; the ratio of the consumption of activated carbon to the quality of the hydrolysis recovery mother liquor is 1:3;
  • the material is pumped into an activated carbon filter press to filter, the filter cake is squeezed dry, and the filtrate is collected in an acid adjustment kettle to adjust acid to a pH value less than 1.0, the feed liquid is pumped into a filter press to filter, and the filter cake is squeezed dry to obtain
  • the refined 2,4-dinitrophenol filter cake has a filter cake yield of 40%.
  • the refined 2,4-dinitrophenol filter cake was detected and analyzed, which met the requirements of relevant national product index standards.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

本发明公开了一种染料分散蓝B56#的生产方法，属于化工染料技术领域。通过利用亚硫酸钠处理1-氨基蒽醌DMF残渣提纯生产混硝，然后再将混硝依次通过一硝化、一硝化精制、缩合、二硝化、水解、还原和溴化转型过程，最后得到产物分散蓝B56#；对水解回收母液进行再处理回收副产品2,4-二硝基苯酚。本发明分散蓝B56#滤饼水解反应过程中产生了2,4-二硝基苯酚钠盐，2,4-二硝基苯酚钠盐溶解在水解回收母液中，为有效利用其中的有效成分，减少三废排放量，通过酸化、过滤生产副产品2-4-二硝基苯酚，该副产品检测均符合标准，可用作生产涂料中间体的企业原料。

Description

一种染料分散蓝B56#的生产方法 技术领域
本发明属于化工染料技术领域，具体涉及一种染料分散蓝B56#的生产方法。
背景技术
现有的1-氨基蒽醌生产线中一次精制过程中产生DMF蒸馏残渣量非常大，该废渣属于危险废物(HW12)，现有处置方式为送厂内焚烧炉焚烧处理，这样既浪费了大量原料，也带来了环境污染。所以通常选择将该固体残渣用于染料分散蓝B56#的生产中，生产过程会使用到大量的洗涤水，洗涤水中会存在大量的副产品，如果不经处理就排放必然带来更大的水污染，还有很大的原料浪费，为了节约生产成本和保护环境，应该寻找一种绿色环保节约的染料分散蓝B56#的生产方法和生产过程。
发明内容
针对现有技术中存在的问题，本发明要解决的技术问题在于提供一种染料分散蓝B56#的生产方法，有效利用水解回收母液中的有效成分，减少三废排放量，通过酸化、过滤生产副产品2-4-二硝基苯酚。
为了解决上述问题，本发明所采用的技术方案如下：
一种染料分散蓝B56#的生产方法，通过利用亚硫酸钠处理1-氨基蒽醌DMF残渣提纯生产混硝，然后再将混硝依次通过一硝化、一硝化精制、缩合、二硝化、水解、还原和溴化转型过程，最后得到产物分散蓝B56#；对水解回收母液进行再处理回收副产品2,4-二硝基苯酚。
所述染料分散蓝B56#的生产方法，所述水解回收母液再处理具体包括以下步骤：
(1)将水解回收母液加入精制釜中，室温下缓慢加入硫酸；
(2)向步骤(1)的溶液中加入活性碳，搅拌脱色0.5～1h；
(3)将物料泵入活性炭压滤机进行过滤，滤饼挤干，滤液收集至调酸釜调酸，将料液泵入压滤机进行过滤，滤饼挤干，得到精制后的2,4-二硝基苯酚滤饼。该副产品生产过程中涉及的反应方程式主要为：
Figure PCTCN2021093755-appb-000001
所述染料分散蓝B56#的生产方法，对精制后的2,4-二硝基苯酚滤饼进行产品检测若不合格，将2,4-二硝基苯酚滤饼再次加入精制釜中，加入底水，调节pH值为6～7，然后重复步骤(2)和(3)。
所述染料分散蓝B56#的生产方法，所述步骤(1)加入硫酸调节溶液至pH值为4～7。
所述染料分散蓝B56#的生产方法，所述步骤(3)滤液加入调酸釜调节pH≤1.0。
所述染料分散蓝B56#的生产方法，所述步骤(1)反应温度为60～70℃，反应时间为0.5～1h。
所述染料分散蓝B56#的生产方法，所述硫酸的质量分数为90％～98％，所述硫酸的用量为水解回收母液质量的40％～50％。
所述染料分散蓝B56#的生产方法，所述步骤(2)中活性炭的用量与水解回收母液质量之比为1:3～1:5。
有益效果：与现有的技术相比，本发明的优点包括：
本发明分散蓝B56#滤饼水解反应过程中产生了2,4-二硝基苯酚钠盐，2,4-二硝基苯酚钠盐溶解在水解回收母液中，为有效利用其中的有效成分，减少三废排放量，通过酸化、过滤生产副产品2-4-二硝基苯酚，该副产品检测均符合标准，可用作生产涂料中间体的企业原料。
具体实施方式
为使本发明的上述目的、特征和优点能够更加明显易懂，下面结合具体实施例对本发明的具体实施方式做详细的说明。
实施例1
一种染料分散蓝B56#的生产方法，通过利用亚硫酸钠处理1-氨基蒽醌DMF残渣提纯生产混硝，然后再将混硝依次通过一硝化、一硝化精制、缩合、二硝化、水解、还原和溴化转型过程，最后得到产物分散蓝B56#；对水解回收母液进行再处理回收副产品2,4-二硝基苯酚。
水解回收母液再处理具体包括以下步骤：
(1)将水解回收母液加入精制釜中，室温下缓慢加入质量分数为98％的硫酸调节溶液至pH值为5，硫酸用量为水解回收母液质量的45％；然后调节反应温度为65℃，反应时间为1h；
(2)向步骤(1)的溶液中加入活性碳，搅拌脱色0.8h；活性炭的用量与水解回收母液质量之比为1:3；
(3)将物料泵入活性炭压滤机进行过滤，滤饼挤干，滤液收集至调酸釜调酸至pH值小于1.0，将料液泵入压滤机进行过滤，滤饼挤干，得到精制后的2,4-二硝基苯酚滤饼，滤饼收率为30％(该收率指的是滤饼质量占水解回收母液质量的质量百分比，下同)。对精制后的2,4-二硝基苯酚滤饼进行检测分析，结果如表1所示。由表1可知，从产品外观、纯度等各方面检测结果显示，该副产品符合相关国家产品指标标准要求，具有良好的环境友好性，该产品生产及储存过程中应远离火种、热源，远离易燃、可燃物，避免与氧化剂、碱类物质混存，该产品可作为副产品外售用作生产涂料中间体的企业原料。
表1 2-4-二硝基苯酚检验参数对照表
Figure PCTCN2021093755-appb-000002
实施例2
一种染料分散蓝B56#的生产方法，通过利用亚硫酸钠处理1-氨基蒽醌DMF残渣提纯生产混硝，然后再将混硝依次通过一硝化、一硝化精制、缩合、二硝化、水解、还原和溴化转型过程，最后得到产物分散蓝B56#；对水解回收母液进行再处理回收副产品2,4-二硝基苯酚。
水解回收母液再处理具体包括以下步骤：
(1)将水解回收母液加入精制釜中，室温下缓慢加入质量分数为90％的硫酸调节溶液至pH值为7，硫酸用量为水解回收母液质量的50％；然后调节反应温度为60℃，反应时间为0.5h；
(2)向步骤(1)的溶液中加入活性碳，搅拌脱色1h；活性炭的用量与水解回收母液质量之比为1:3；
(3)将物料泵入活性炭压滤机进行过滤，滤饼挤干，滤液收集至调酸釜调酸至pH值小于1.0，将料液泵入压滤机进行过滤，滤饼挤干，得到精制后的2,4-二硝基苯酚滤饼，滤饼收率为20％。对精制后的2,4-二硝基苯酚滤饼进行检测分析，符合相关国家产品指标标准要求。
实施例3
一种染料分散蓝B56#的生产方法，通过利用亚硫酸钠处理1-氨基蒽醌DMF残渣提纯生产混硝，然后再将混硝依次通过一硝化、一硝化精制、缩合、二硝化、水解、还原和溴化转型过程，最后得到产物分散蓝B56#；对水解回收母液进行再处理回收副产品2,4-二硝基苯酚。
水解回收母液再处理具体包括以下步骤：
(1)将水解回收母液加入精制釜中，室温下缓慢加入质量分数为95％的硫酸调节溶液至pH值为5，硫酸用量为水解回收母液质量的45％；然后调节反应温度为70℃，反应时间为1h；
(2)向步骤(1)的溶液中加入活性碳，搅拌脱色1h；活性炭的用量与水解回收母液质量之比为1:5；
(3)将物料泵入活性炭压滤机进行过滤，滤饼挤干，滤液收集至调酸釜调酸至pH值小于1.0，将料液泵入压滤机进行过滤，滤饼挤干，得到精制后的2,4-二硝基苯酚滤饼，滤饼收率为35％。对精制后的2,4-二硝基苯酚滤饼进行检测分析，符合相关国家产品指标标准要求。
实施例4
一种染料分散蓝B56#的生产方法，通过利用亚硫酸钠处理1-氨基蒽醌DMF残渣提纯生产混硝，然后再将混硝依次通过一硝化、一硝化精制、缩合、二硝化、水解、还原和溴化转型过程，最后得到产物分散蓝B56#；对水解回收母液进行再处理回收副产品2,4-二硝基苯酚。
水解回收母液再处理具体包括以下步骤：
(1)将水解回收母液加入精制釜中，室温下缓慢加入质量分数为98％的硫酸调节溶液至pH值为5，硫酸用量为水解回收母液质量的50％；然后调节反应温度为70℃，反应时间为1h；
(2)向步骤(1)的溶液中加入活性碳，搅拌脱色1h；活性炭的用量与水解回收母液质量之比为1:3；
(3)将物料泵入活性炭压滤机进行过滤，滤饼挤干，滤液收集至调酸釜调酸至pH值小于1.0，将料液泵入压滤机进行过滤，滤饼挤干，得到精制后的2,4-二硝基苯酚滤饼，滤饼收率为40％。对精制后的2,4-二硝基苯酚滤饼进行检测分析，符合相关国家产品指标标准要求。

Claims (8)

  1. 一种染料分散蓝B56#的生产方法，其特征在于，通过利用亚硫酸钠处理1-氨基蒽醌DMF残渣提纯生产混硝，然后再将混硝依次通过一硝化、一硝化精制、缩合、二硝化、水解、还原和溴化转型过程，最后得到产物分散蓝B56#；对水解回收母液进行再处理回收副产品2,4-二硝基苯酚。
  2. 根据权利要求1所述染料分散蓝B56#的生产方法，其特征在于，所述水解回收母液再处理具体包括以下步骤：
    (1)将水解回收母液加入精制釜中，室温下缓慢加入硫酸；
    (2)向步骤(1)的溶液中加入活性碳，搅拌脱色0.5～1h；
    (3)将物料泵入活性炭压滤机进行过滤，滤饼挤干，滤液收集至调酸釜调酸，将料液泵入压滤机进行过滤，滤饼挤干，得到精制后的2,4-二硝基苯酚滤饼。
  3. 根据权利要求2所述染料分散蓝B56#的生产方法，其特征在于，对精制后的2,4-二硝基苯酚滤饼进行产品检测若不合格，将2,4-二硝基苯酚滤饼再次加入精制釜中，加入底水，调节pH值为6～7，然后重复步骤(2)和(3)。
  4. 根据权利要求2所述染料分散蓝B56#的生产方法，其特征在于，所述步骤(1)加入硫酸调节溶液至pH值为4～7。
  5. 根据权利要求2所述染料分散蓝B56#的生产方法，其特征在于，所述步骤(3)滤液加入调酸釜调节PH≤1.0。
  6. 根据权利要求2所述染料分散蓝B56#的生产方法，其特征在于，所述步骤(1)反应温度为60～70℃，反应时间为0.5～1h。
  7. 根据权利要求2所述染料分散蓝B56#的生产方法，其特征在于，所述硫酸的质量分数为90％～98％，所述硫酸的用量为水解回收母液质量的40％～50％。
  8. 根据权利要求2所述染料分散蓝B56#的生产方法，其特征在于，所述步骤(2)中活性炭的用量与水解回收母液质量之比为1:3～1:5。
PCT/CN2021/093755 2021-05-14 2021-05-14 一种染料分散蓝b56#的生产方法 WO2022236795A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2021/093755 WO2022236795A1 (zh) 2021-05-14 2021-05-14 一种染料分散蓝b56#的生产方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2021/093755 WO2022236795A1 (zh) 2021-05-14 2021-05-14 一种染料分散蓝b56#的生产方法

Publications (1)

Publication Number Publication Date
WO2022236795A1 true WO2022236795A1 (zh) 2022-11-17

Family

ID=84027910

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/093755 WO2022236795A1 (zh) 2021-05-14 2021-05-14 一种染料分散蓝b56#的生产方法

Country Status (1)

Country Link
WO (1) WO2022236795A1 (zh)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101423477A (zh) * 2008-12-02 2009-05-06 江苏吉华化工有限公司 1，5(1，8)-二硝基蒽醌的生产方法
CN101591249A (zh) * 2009-06-23 2009-12-02 江苏吉华化工有限公司 将生产1-氨基蒽醌的“废渣”处理成生产1,5(1,8)-二硝基蒽醌原料的方法
CN102320979A (zh) * 2011-05-25 2012-01-18 盐城市瓯华化学工业有限公司 溶剂法生产1-硝基蒽醌产生的废渣的资源化利用方法
CN102399153A (zh) * 2011-12-15 2012-04-04 盐城市瓯华化学工业有限公司 溶剂法生产1-硝基蒽醌产生的“废渣”制备α,α′-二硝基蒽醌精制物的方法
CN103436046A (zh) * 2013-08-20 2013-12-11 杭州帝凯化工有限公司 一种环保新型分散蓝2bln的制备方法
CN107446381A (zh) * 2017-07-13 2017-12-08 青岛海湾集团有限公司 分散蓝56一次硝化废酸循环利用的方法
CN111690266A (zh) * 2020-06-01 2020-09-22 扬州日兴生物科技股份有限公司 一种染料分散蓝b56#的生产方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101423477A (zh) * 2008-12-02 2009-05-06 江苏吉华化工有限公司 1，5(1，8)-二硝基蒽醌的生产方法
CN101591249A (zh) * 2009-06-23 2009-12-02 江苏吉华化工有限公司 将生产1-氨基蒽醌的“废渣”处理成生产1,5(1,8)-二硝基蒽醌原料的方法
CN102320979A (zh) * 2011-05-25 2012-01-18 盐城市瓯华化学工业有限公司 溶剂法生产1-硝基蒽醌产生的废渣的资源化利用方法
CN102399153A (zh) * 2011-12-15 2012-04-04 盐城市瓯华化学工业有限公司 溶剂法生产1-硝基蒽醌产生的“废渣”制备α,α′-二硝基蒽醌精制物的方法
CN103436046A (zh) * 2013-08-20 2013-12-11 杭州帝凯化工有限公司 一种环保新型分散蓝2bln的制备方法
CN107446381A (zh) * 2017-07-13 2017-12-08 青岛海湾集团有限公司 分散蓝56一次硝化废酸循环利用的方法
CN111690266A (zh) * 2020-06-01 2020-09-22 扬州日兴生物科技股份有限公司 一种染料分散蓝b56#的生产方法

Similar Documents

Publication Publication Date Title
CN110227702B (zh) 一种利用化工废盐制备熔剂的方法
CN106399715A (zh) 高氯锌灰物料氨浸离子交换联合工艺生产电解锌的方法
US20240010507A1 (en) Method For Recovering High-Purity Sodium Bromide From Bromine-Containing Crude Salt
CN103979705B (zh) 一种蒽醌类染料碱性废水中硝酸钾的回收方法
CN105130854A (zh) 一种改进的h酸生产工艺
CN103880210A (zh) 一种分散染料生产中酸性废水的处理回用工艺
CN101294286A (zh) 钢材酸洗废酸液的处理与回收方法及设备
CN108910849A (zh) 一种从污泥灰中循环提取磷的方法
CN109607623B (zh) 钛白废酸的简化利用工艺
CN103896307A (zh) 焦炉煤气脱硫废液提盐产品硫酸铵的再精制方法
CN111690266B (zh) 一种染料分散蓝b56#的生产方法
CN101838204B (zh) 一种从1-氨基蒽醌生产废渣中收集1-硝基蒽醌的工艺
WO2022236795A1 (zh) 一种染料分散蓝b56#的生产方法
CN103466713A (zh) 低品位锰矿高压法一次结晶制备一水合硫酸锰
CN108585335A (zh) 一种盐酸苯肼生产废液处理及资源回收方法
CN106000075B (zh) 苯氯化工艺中氯化尾气的净化吸收及循环利用方法和装置
CN111253773A (zh) 一种利用1-氨基蒽醌dmf残渣生产分散蓝的方法
CN101633495A (zh) 利用硫化染料废水制备硫化黑染料和硫代硫酸钠的方法
KR100516976B1 (ko) 중유회 또는 오리멀젼회로 부터 산화바나듐 플레이크를회수하는 방법
CN105540926A (zh) 一种利用酸性废水联产白炭黑和无机盐的方法
CN103274923B (zh) 一种回收利用双烯醇酮醋酸酯废液的方法
CN109180605A (zh) 废水中树脂直接合成橡胶硫化促进剂tbbs的方法
CN110964905A (zh) 一种粗氯铂酸铵的提纯方法
CN101723845A (zh) 一种n，n-二乙基间乙酰氨基苯胺的生产方法
CN101607917B (zh) 高品质对氨基苯酚的生产方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21941366

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21941366

Country of ref document: EP

Kind code of ref document: A1