CN108085161B - 氢氰酸聚合物的清洗试剂及方法 - Google Patents
氢氰酸聚合物的清洗试剂及方法 Download PDFInfo
- Publication number
- CN108085161B CN108085161B CN201711258700.0A CN201711258700A CN108085161B CN 108085161 B CN108085161 B CN 108085161B CN 201711258700 A CN201711258700 A CN 201711258700A CN 108085161 B CN108085161 B CN 108085161B
- Authority
- CN
- China
- Prior art keywords
- cleaning
- alkali
- polyoxyethylene ether
- concentration
- hydrocyanic acid
- 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
- 238000004140 cleaning Methods 0.000 title claims abstract description 66
- LELOWRISYMNNSU-UHFFFAOYSA-N hydrogen cyanide Chemical compound N#C LELOWRISYMNNSU-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 229920000642 polymer Polymers 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000003153 chemical reaction reagent Substances 0.000 title abstract description 23
- 229940051841 polyoxyethylene ether Drugs 0.000 claims abstract description 35
- 229920000056 polyoxyethylene ether Polymers 0.000 claims abstract description 35
- 239000003513 alkali Substances 0.000 claims abstract description 33
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 27
- 239000012459 cleaning agent Substances 0.000 claims abstract description 26
- 239000004094 surface-active agent Substances 0.000 claims abstract description 17
- 239000002270 dispersing agent Substances 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000004115 Sodium Silicate Substances 0.000 claims abstract description 9
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052911 sodium silicate Inorganic materials 0.000 claims abstract description 9
- 239000011734 sodium Substances 0.000 claims abstract description 8
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 6
- -1 polyoxyethylene Polymers 0.000 claims abstract description 6
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims abstract description 4
- 239000008367 deionised water Substances 0.000 claims abstract description 4
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 4
- 150000002191 fatty alcohols Chemical class 0.000 claims description 12
- 238000005070 sampling Methods 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 11
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 9
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 claims description 8
- 238000012360 testing method Methods 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000006386 neutralization reaction Methods 0.000 claims description 6
- 238000002791 soaking Methods 0.000 claims description 4
- 238000003860 storage Methods 0.000 claims description 4
- 239000002699 waste material Substances 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims description 3
- SMVRDGHCVNAOIN-UHFFFAOYSA-L disodium;1-dodecoxydodecane;sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O.CCCCCCCCCCCCOCCCCCCCCCCCC SMVRDGHCVNAOIN-UHFFFAOYSA-L 0.000 claims description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 abstract description 11
- 235000011152 sodium sulphate Nutrition 0.000 abstract description 11
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 8
- 239000003795 chemical substances by application Substances 0.000 abstract description 5
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 abstract description 4
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 238000004090 dissolution Methods 0.000 description 21
- 239000000243 solution Substances 0.000 description 20
- 239000007864 aqueous solution Substances 0.000 description 12
- ONJQDTZCDSESIW-UHFFFAOYSA-N polidocanol Chemical compound CCCCCCCCCCCCOCCOCCOCCOCCOCCOCCOCCOCCOCCO ONJQDTZCDSESIW-UHFFFAOYSA-N 0.000 description 11
- 238000002474 experimental method Methods 0.000 description 8
- LQZZUXJYWNFBMV-UHFFFAOYSA-N dodecan-1-ol Chemical compound CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 description 7
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 6
- 238000013329 compounding Methods 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- 239000003599 detergent Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000002671 adjuvant Substances 0.000 description 4
- 229910000029 sodium carbonate Inorganic materials 0.000 description 4
- 239000003945 anionic surfactant Substances 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- 239000002736 nonionic surfactant Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000001804 emulsifying effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- MWFMGBPGAXYFAR-UHFFFAOYSA-N 2-hydroxy-2-methylpropanenitrile Chemical compound CC(C)(O)C#N MWFMGBPGAXYFAR-UHFFFAOYSA-N 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- BTGRAWJCKBQKAO-UHFFFAOYSA-N adiponitrile Chemical compound N#CCCCCC#N BTGRAWJCKBQKAO-UHFFFAOYSA-N 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- KXZJHVJKXJLBKO-UHFFFAOYSA-N chembl1408157 Chemical compound N=1C2=CC=CC=C2C(C(=O)O)=CC=1C1=CC=C(O)C=C1 KXZJHVJKXJLBKO-UHFFFAOYSA-N 0.000 description 1
- 239000013064 chemical raw material Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007922 dissolution test Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- UIIMBOGNXHQVGW-UHFFFAOYSA-M sodium bicarbonate Substances [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 230000003381 solubilizing effect Effects 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/83—Mixtures of non-ionic with anionic compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/04—Water-soluble compounds
- C11D3/044—Hydroxides or bases
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/04—Water-soluble compounds
- C11D3/10—Carbonates ; Bicarbonates
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/008—Polymeric surface-active agents
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/02—Anionic compounds
- C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
- C11D1/29—Sulfates of polyoxyalkylene ethers
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/72—Ethers of polyoxyalkylene glycols
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
- C11D2111/10—Objects to be cleaned
- C11D2111/14—Hard surfaces
- C11D2111/20—Industrial or commercial equipment, e.g. reactors, tubes or engines
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Detergent Compositions (AREA)
Abstract
本发明公开了一种氢氰酸聚合物的清洗试剂,以表面活性剂作为清洗主剂,辅以碱助剂和分散剂,具体由以下浓度的组分构成:烷基酚聚氧乙烯醚OP‑10 1.2%;十二醇聚氧乙烯醚硫酸钠1.6%;脂肪醇聚氧乙烯醚AEO‑9 0.4%;碱助剂1.0‑2.0%,其中,碱助剂由质量分数比为2:1的NaOH与Na2CO3构成;硅酸钠0.4%;余量为去离子水。清洗剂简单易配制,对氢氰酸聚合物清洗效果好,对冷凝器及设备管线等凡是清洗液可达到的地方均能彻底清洗,对金属管道设备腐蚀性小,清洗过程方便易操作,将清洗管线接入设备即可进行快速清洗,节约时间,降低成本。
Description
技术领域
本发明属于化工原料清洗技术领域,具体为一种氢氰酸聚合物的清洗试剂及方法。
背景技术
氢氰酸是有机化工合成的重要原料,可用于生产氰化钠、丙酮氰醇和己二腈等化学品,在农药、医药、染料、助剂和冶金等方面都有着广泛的应用,市场需求量很大。纯的氢氰酸在低温条件下稳定,但当混入水、碱及铁屑等杂质时易发生分解和聚合等反应,该过程具有自催化作用,加之反应放热可能引起爆炸,具有很大的风险。氢氰酸发生聚合时,产生的黑色粘稠物很快就会堵塞冷凝器、塔器设备和管线等,影响装置正常运行,因此生产过程中需要针对氢氰酸聚合采取可靠的预防措施,并在聚合物生成后及时进行清洗。
氰化氢的聚合物为有机垢,可采用高温碱液溶解除掉。水基碱液清洗剂一般由碱性无机盐类与复合表面活性剂组成,具有润湿、渗透、乳化、分散和絮凝等作用,一般采用5%氢氧化钠、2%碳酸钠的水溶液,再加入适当的表面活性剂和助剂等进行循环浸泡清洗。碱液清洗氢氰酸聚合物干净彻底,使用范围广,可用于不同位置、不同规模尺寸的塔器设备和管线中,但碱液冲洗在装置停车时进行,耗费时间较长,需要长时间浸泡清洗,耗水量大,且清洗液有腐蚀性,对于操作人员也有一定的安全风险。
发明内容
本发明目的是提供了一种高效便捷、设备腐蚀性小、人员操作安全系数高,且可在线快速清洗氢氰酸聚合物的清洗试剂及方法,通过选配适当的表面活性剂和分散剂,配以适当的碱助剂为清洗剂,通过循环浸泡清洗,能够迅速将塔器设备管线内堵塞的氢氰酸聚合物除去。
本发明是采用如下技术方案实现的:
一种氢氰酸聚合物的清洗试剂,以表面活性剂作为清洗主剂,辅以碱助剂和分散剂,具体由以下浓度的组分构成:
烷基酚聚氧乙烯醚OP-10 1.2%,
十二醇聚氧乙烯醚硫酸钠 1.6%,
脂肪醇聚氧乙烯醚AEO-9 0.4%,
碱助剂 1.0~2.0%,
其中,碱助剂由质量分数比为2:1的NaOH与Na2CO3构成;
硅酸钠 0.4%,
余量为去离子水。
优选的,碱助剂的浓度为1.5%。
一种氢氰酸聚合物的清洗方法,包括如下步骤:
(1)、按照上述配方配制清洗液,通过循环泵输送至需要清洗的塔器设备内;加热清洗液至50-70℃,浸泡1-3小时,反复循环清洗,每隔1小时,从取样口取样并化验浊度,待浊度稳定后,停止循环;
(2)、停止加热,将变为黑色的清洗液排放至废液桶内进行破氰处理,切换至中和清洗储液槽,将pH=4-5的醋酸溶液注入清洗系统中,进行中和清洗;
(3)、最后进行水冲洗,每隔0.5-1小时,从取样口取样1次,至pH为中性,清洗液变为无色透明时结束冲洗。
本发明设计合理,清洗剂简单易配制,对氢氰酸聚合物清洗效果好,对冷凝器及设备管线等凡是清洗液可达到的地方均能彻底清洗,对金属管道设备腐蚀性小,清洗过程方便易操作,将清洗管线接入设备即可进行快速清洗,节约时间,降低成本。清洗后的废液可直接就地破氰处理,减少有毒物质的排放和环境污染。
附图说明
图1表示本发明清洗方法的流程示意图。
具体实施方式
下面对本发明的具体实施例进行详细说明。
1、清洗剂的配制
表面活性剂的低浓度水溶液具有减小表面张力,润湿渗透,乳化分散与增溶等作用,氢氰酸聚合物为有机垢,碱助剂对其去除有良好的效果,为了有效去除聚合物,同时避免强碱对设备的腐蚀,因此选择表面活性剂作为清洗主剂,辅以碱助剂和分散剂。
1.1、表面活性剂的选择
分别将各阴离子表面活性剂、非离子表面活性剂配成浓度为10g/L的水溶液,向500mL烧杯中加入试剂溶液200mL,分析天平称垢样10g,加入试剂溶液中,搅拌1h,静置后用滤纸过滤,测定滤渣的固含量,计算试剂的垢样溶解率。溶垢能力测定结果如下表1和表2所示,溶垢率越高则试剂溶垢能力越好。
表1 阴离子表面活性剂溶垢实验结果
表2 非离子表面活性剂溶垢实验结果
根据上述结果,选定阴离子表面活性剂十二醇聚氧乙烯醚硫酸钠、脂肪醇硫酸钠和醇醚羧酸钠与非离子表面活性剂脂肪醇聚氧乙烯醚AEO-9、烷基酚聚氧乙烯醚OP-10进行复配,溶垢率实验结果如下表3所示。
表3 表面活性剂复配实验结果
可以看出,脂肪醇聚氧乙烯醚AEO-9,烷基酚聚氧乙烯醚OP-10和十二醇聚氧乙烯醚硫酸钠复配后,溶垢率增加最为显著,说明三者之间的协同作用良好,因此选其作为复配的表面活性剂。
1.2、表面活性剂最佳复配浓度的确定
室温下,分别将脂肪醇聚氧乙烯醚AEO-9,烷基酚聚氧乙烯醚OP-10和十二醇聚氧乙烯醚硫酸钠配制成不同浓度的水溶液,分别进行单一表面活性剂剂溶垢能力测定,结果如下表4所示。
表4 不同浓度单一表面活性剂剂溶垢率试验结果
可以看出,随着表面活性剂浓度的增大,溶垢率有一最大值,此时的浓度即为该表面活性剂的最佳浓度值。据此设计正交复配浓度试验,固定两种试剂的浓度,测试另一种试剂浓度对复配表面活性剂溶垢率的影响。
(1)、分别配制浓度为0.8%的脂肪醇聚氧乙烯醚AEO-9水溶液,浓度为1.2%的烷基酚聚氧乙烯醚OP-10水溶液,逐步增大十二醇聚氧乙烯醚硫酸钠浓度,得到溶垢率实验结果如下表5所示,得到十二醇聚氧乙烯醚硫酸钠的最佳浓度为1.4%。
表5 十二醇聚氧乙烯醚硫酸钠浓度对复配试剂的影响
(2)、分别配制浓度为0.8%的脂肪醇聚氧乙烯醚AEO-9水溶液,浓度为1.6%的十二醇聚氧乙烯醚硫酸钠水溶液,逐步增大烷基酚聚氧乙烯醚OP-10的浓度,得到溶垢率实验结果如下表6所示,得到烷基酚聚氧乙烯醚OP-10的最佳浓度为1.0%。
表6 烷基酚聚氧乙烯醚OP-10浓度对复配试剂的影响
(3)、分别配制浓度为1.2%的烷基酚聚氧乙烯醚OP-10水溶液,浓度为1.6%的十二醇聚氧乙烯醚硫酸钠水溶液,逐步增大脂肪醇聚氧乙烯醚AEO-9的浓度,得到溶垢率实验结果如下表7所示,得到脂肪醇聚氧乙烯醚AEO-9的最佳浓度为0.4%。
表7 脂肪醇聚氧乙烯醚AEO-9浓度对复配试剂的影响
1.3、碱助剂的选择
分别将各碱助剂配成浓度为10g/L的水溶液,向500mL烧杯中加入试剂溶液200mL,分析天平称垢样10g,加入试剂溶液中,搅拌1h,静置后用滤纸过滤,测定滤渣的固含量,计算试剂的垢样溶解率。溶垢能力测定结果如下表8所示,溶垢率越高则试剂溶垢能力越好。
表8 碱助剂溶垢实验结果
可以看出,单个碱助剂溶垢能力:NaOH>Na2CO3>NaHCO3,两种碱助剂混合时,NaOH与Na2CO3的混合体系溶垢能力提升最多,据此选择NaOH与Na2CO3的质量分数比为2:1的混合体系作为碱助剂。将NaOH与Na2CO3分别配制成浓度为0.5-5%(质量分数)的水溶液,与上述得到的复配表面活性剂等体积均匀混合配制试剂,进行溶垢能力测定,结果见下表9。
表9 不同碱助剂浓度下复配试剂的溶垢率
可以看出,加入碱助剂后,清洗剂的溶垢率有所提升,对该复配清洗剂进行腐蚀性测定,结果如下表10:
表10不同碱助剂浓度下复配试剂的腐蚀率
根据 HG/T2387-92《工业设备化学清洗质量标准》规定,清洗剂对铁及铁合金的腐蚀率﹤6g/(m2·h)。从表10中可以看出,碱助剂浓度低于2.0g/L 时,复配试剂对试片的腐蚀率均符合标准规定,复配试剂的腐蚀率随着碱助剂浓度的增大而增高;结合表9中碱助剂的浓度对复配试剂溶垢率的影响,综合考虑,确定碱助剂的复配浓度为1.0-2.0%。
1.4、分散剂的选择
按上述比例配制清洗剂,室温下,在 500mL烧杯中加入清洗剂溶液 200mL,测定初始浊度,分析天平称量垢样10g加入清洗液当中,搅拌1h后静置 10min,测定终止浊度,计算两者的浊度差1;在现有配比清洗液中加入不同种类的分散剂,再次测定溶垢前后的浊度差2。计算两次测定浊度差的增值,结果如表11所示。
表11 分散剂悬浮实验结果
可以看出,加入分散剂时,清洗剂溶垢后的浊度明显增大,这是由于清洗剂的粘度增大,减小了清洗剂中不溶微粒的沉降速度,延长了不溶微粒在清洗剂中的停留时间。比较加入三种不同分散剂的清洗剂溶垢后的浊度值,浊度差增值越大,说明分散剂的分散能力越好,因此选择硅酸钠作为清洗剂中的分散剂。
室温下,测定空白清洗剂溶垢前后的浊度,计算浊度差1;向清洗剂中加入不同浓度的硅酸钠,再次测定清洗剂溶垢前后的浊度,计算浊度差2。计算两次测定浊度差的增值,结果如表12所示。
表12不同浓度分散剂悬浮实验结果
可以看出,硅酸钠的加入大大降低了不溶微粒在清洗剂中的沉降速度,而当硅酸钠浓度达到0.4%时,继续增大其浓度,清洗剂与空白清洗剂的浊度差增值基本保持不变,因此,确定硅酸钠的浓度为0.4%。
1.5、清洗温度
按上述配方配制清洗剂,水浴控制清洗温度为 20℃~110℃,不同温度下清洗剂溶垢能力测定结果如表13所示。
表13不同温度下清洗剂溶垢实验结果
可以看出,随着温度的升高,清洗剂的溶垢能力增强,当温度增高到60℃以后,清洗剂的溶垢率增大缓慢,综合考虑清洗施工的经济性,确定清洗温度为 50-70℃。
总之,氢氰酸聚合物的清洗试剂,以表面活性剂作为清洗主剂,辅以碱助剂和分散剂,具体由以下浓度的组分构成:
1.2%的烷基酚聚氧乙烯醚OP-10;1.6%的十二醇聚氧乙烯醚硫酸钠;
0.4%的脂肪醇聚氧乙烯醚AEO-9;1.0~2.0%的碱助剂,其中,碱助剂由质量分数比为2:1的NaOH与Na2CO3构成,(优选碱助剂的浓度为1.5%);0.4%的硅酸钠;余量为去离子水。
2、清洗方法
如图1所示,清洗精馏塔时,关闭物料进入精馏塔的管路阀门,只需隔离精馏塔,将清洗系统通过管线接入设备即可快速清洗。按照上述配方配制清洗液于储液槽内,通过循环泵输送至精馏塔内,直至充满冷凝器。利用塔釜蒸汽将清洗液加热至50~70℃,浸泡1小时,利用循环泵进行反复循环冲洗,每隔1小时,从取样口取样并化验浊度,清洗5小时后,浊度基本稳定,停止循环。停止加热,按循环清洗流程将变为黑色的清洗液排放至废液桶内进行破氰处理。系统切换至中和清洗储液槽,将pH=4-5的醋酸溶液注入清洗系统中,进行中和清洗。最后进行水冲洗,每隔0.5小时,从取样口取样1次,至pH为中性,清洗液变为无色透明时结束冲洗。
以上实施例仅用以说明本发明而非限制,本领域技术人员应当理解,对本发明内容进行修改或者等同替换,都不脱离本发明范围。
Claims (1)
1.一种氢氰酸聚合物的清洗方法,其特征在于:包括如下步骤:
(1)、配制清洗液:清洗液以表面活性剂作为清洗主剂,辅以碱助剂和分散剂,具体由以下浓度的组分构成:烷基酚聚氧乙烯醚OP-10 1.2%,十二醇聚氧乙烯醚硫酸钠 1.6%,脂肪醇聚氧乙烯醚AEO-9 0.4%,碱助剂 1.5%, 硅酸钠 0.4%,余量为去离子水;其中,碱助剂由质量分数比为2:1的NaOH与Na2CO3构成;
将清洗液通过循环泵输送至需要清洗的塔器设备内;加热清洗液至70℃,浸泡1-3小时,反复循环清洗,每隔1小时,从取样口取样并化验浊度,待浊度稳定后,停止循环;
(2)、停止加热,将变为黑色的清洗液排放至废液桶内进行破氰处理,切换至中和清洗储液槽,将pH=4-5的醋酸溶液注入清洗系统中,进行中和清洗;
(3)、最后进行水冲洗,每隔0.5-1小时,从取样口取样1次,至pH为中性,清洗液变为无色透明时结束冲洗。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201711258700.0A CN108085161B (zh) | 2017-12-04 | 2017-12-04 | 氢氰酸聚合物的清洗试剂及方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201711258700.0A CN108085161B (zh) | 2017-12-04 | 2017-12-04 | 氢氰酸聚合物的清洗试剂及方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN108085161A CN108085161A (zh) | 2018-05-29 |
CN108085161B true CN108085161B (zh) | 2020-04-10 |
Family
ID=62173645
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201711258700.0A Active CN108085161B (zh) | 2017-12-04 | 2017-12-04 | 氢氰酸聚合物的清洗试剂及方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN108085161B (zh) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108865534B (zh) * | 2018-08-01 | 2020-09-18 | 三晃树脂(佛山)有限公司 | 清洗剂及其制备方法 |
-
2017
- 2017-12-04 CN CN201711258700.0A patent/CN108085161B/zh active Active
Non-Patent Citations (1)
Title |
---|
丙烯腈车间成品塔及脱氰塔再沸器清洗的探讨;金英顺等;《科技情报》;19981231(第2期);第16-19页 * |
Also Published As
Publication number | Publication date |
---|---|
CN108085161A (zh) | 2018-05-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN109576077B (zh) | 光学玻璃清洗剂 | |
CN101892132B (zh) | 一种太阳能硅片清洗剂及其制备方法 | |
CN108315748B (zh) | 一种金属清洗剂及其制备方法 | |
CN106283635B (zh) | 一种棉用精练剂 | |
CN104313622A (zh) | 一种常温水基无磷重油防锈清洗剂 | |
CN110067001B (zh) | 一种金属清洗剂及其制备方法 | |
US11459530B2 (en) | Solution for removing various types of deposits from a surface | |
CN107418771B (zh) | 剥离型水基光学玻璃清洗剂 | |
CN110777017A (zh) | 一种环保型洗衣液及其制备方法 | |
CN108085161B (zh) | 氢氰酸聚合物的清洗试剂及方法 | |
CN112522037A (zh) | 一种用于清洗pcb板的中性水基清洗剂及其制备方法 | |
CN112592771A (zh) | 一种半导体清洗剂及其制备方法 | |
CN114045188A (zh) | 一种中性环保清洗剂及其制备方法与应用 | |
CN110387292A (zh) | 一种应用于光学玻璃基板的清洗液及制备方法 | |
CN106566677A (zh) | 一种油田输油管道在线清洗除垢的清洗分散剂及制备方法 | |
CN103643228A (zh) | 一种水相封孔剂及其使用方法 | |
CN103668264A (zh) | 常温中性无磷脱脂剂及其制备方法 | |
CN111440679A (zh) | 一种清洁高硫酸盐垢的清洁剂及其制备方法和应用 | |
CN115571863B (zh) | 一种湿法磷酸溶垢剂及其制备方法和应用 | |
CN113789227A (zh) | 一种适用于铝合金传热管的硫酸钙垢清洗剂及其制备方法和应用 | |
CN107630223A (zh) | 一种高效微泡环保型水基金属清洗剂 | |
RU2412985C1 (ru) | Композиция для отмыва нефтешламов | |
CN114437876B (zh) | 一种线路板干膜显影清槽液 | |
CN115537821B (zh) | 一种用于金属表面的生物酶洗涤剂及其制备方法 | |
CN112479907B (zh) | 一种正庚酸三异丙醇胺皂及其制备方法和应用、金属清洗剂 |
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 | ||
GR01 | Patent grant | ||
GR01 | Patent grant |