CN1235913C - Production for stable chlorinedioxide solution - Google Patents

Production for stable chlorinedioxide solution Download PDF

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CN1235913C
CN1235913C CN 03121405 CN03121405A CN1235913C CN 1235913 C CN1235913 C CN 1235913C CN 03121405 CN03121405 CN 03121405 CN 03121405 A CN03121405 A CN 03121405A CN 1235913 C CN1235913 C CN 1235913C
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chlorine dioxide
solution
composite
ratio
hydrogen peroxide
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CN1439599A (en
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王奎涛
张炳烛
陈宇鹏
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河北科技大学
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Abstract

本发明涉及一种稳定性二氧化氯溶液的生产方法。 The present invention relates to a method of producing a stabilized chlorine dioxide solution. 它采用双氧水做还原剂,在硫酸介质中还原碱金属氯酸盐发生二氧化氯,反应中使用了由焦磷酸钠、2-羟基膦酰基乙酸、尿素按配比组成的复合催化剂,并由复合催化剂、双氧水、碱金属氯酸盐按配比组成复合反应液,与硫酸溶液在多梯级反应器中进行反应,生成高纯二氧化氯气体,然后导入组合吸收塔中与复合稳定吸收液进行稳定吸收处理,产生稳定性二氧化氯溶液。 It uses hydrogen peroxide as reducing agent, reduction of alkali metal chlorate, chlorine dioxide in sulfuric acid medium, the composite catalyst used in the reaction of sodium pyrophosphate, 2-hydroxy phosphonoacetic acid, urea, by the ratio of the composition, the composite catalyst by , hydrogen peroxide, alkali metal chlorate by the composition of the composite ratio of the reaction solution, reacted in a multi-step reactor with a sulfuric acid solution to produce chlorine dioxide of high purity, and then introduced into the absorption column stabilized composition was subjected to stabilizing the absorbent composite absorption treatment generating stabilized chlorine dioxide solution. 该生产方法,取得了极高的吸收率,解决了二氧化氯溶液的稳定性,生产效率高,成本大幅降低,整个操作过程安全、运行平稳可靠,可连续自动生产,适于工业化生产。 The production process, to obtain a high absorption rate, the solution stabilized chlorine dioxide solution, and high productivity, significant cost reductions, the whole operation safe, stable and reliable, continuous automatic production, suitable for industrial production.

Description

一种稳定性二氧化氯溶液的生产方法 A method of producing a stabilized chlorine dioxide solution

技术领域 FIELD

本发明涉及一种稳定性二氧化氯溶液的生产方法。 The present invention relates to a method of producing a stabilized chlorine dioxide solution.

背景技术 Background technique

二氧化氯溶液作为一种高效、广谱、快速、无毒的杀菌消毒剂、除臭剂、防霉剂、食品保险剂、水质和空气净化剂及优异的纸浆漂白剂,近年来在世界范围内得到广泛的研究应用,有着广阔的市场前景。 Chlorine dioxide solution as an efficient, broad spectrum, fast, non-toxic disinfectant, deodorant, fungicide, the insurance agent, food, water and air purification agent excellent in pulp bleaching agents, in recent years worldwide has been widely studied within the application, it has broad market prospects. 目前国内主导工艺现为亚氯酸钠转化法和甲醇还原法,亚氯酸钠转化法的原料及动力消耗高出国外平均水平3倍以上,甲醇还原法亦存在着生产装置复杂、反映温度高、产成品中甲醇含量易超标等问题,制约了稳定二氧化氯溶液的推广应用。 Currently technology is now the leading sodium chlorite conversion and methanol reduction method, raw materials and power consumption of sodium chlorite transformation of foreign higher than 3 times the average, there is also a reduction methanol production apparatus is complicated, reflecting the high temperature , the methanol content in the finished product is easy to excessive problems, restricted stabilized chlorine dioxide solution application.

中国专利CN1097716A公开了一种稳定性二氧化氯的生产方法,用双氧水作还原剂,在硫酸介质中还原氯酸钠产生二氧化氯,再导入碳酸钠溶液中吸收制得二氧化氯溶液。 Chinese patent CN1097716A discloses a method of producing a stabilized chlorine dioxide with hydrogen peroxide as the reducing agent, reduction of sodium chlorate to produce chlorine dioxide in sulfuric acid medium, and then absorbed into sodium carbonate solution to prepare a solution of chlorine dioxide. 上述生产方法存在的缺点为,三种原料同时向单级反应罐中滴加反应,产生局部过热、反应不充分、易产生爆炸现象,工艺操作难准确控制等都会造成二氧化氯反应的速度、吸收率、纯度下降,反应过程较难控制,难以生产高浓度、高纯度的稳定性二氧化氯溶液,通常二氧化氯含量为2.0~2.5%,二氧化氯纯度较低。 The above-described disadvantages of the production method, three materials simultaneously added dropwise to the reaction in a single stage reaction tank to produce local overheating, insufficient reaction, easy to produce explosions, and other process operations are difficult to accurately control the speed caused by the reaction of chlorine dioxide, absorption rate, decreased purity, the process is difficult to control the reaction, it is difficult to produce a high concentration chlorine dioxide solution stability, high purity, typically chlorine dioxide content of 2.0% to 2.5%, a lower purity of chlorine dioxide.

发明内容 SUMMARY

本发明的目的在于提供一种新的高效、高纯、高浓度的稳定性二氧化氯溶液的生产方法。 Object of the present invention to provide a new efficient, high-purity, stabilized chlorine dioxide of high concentration solution of production methods. 利用本方法制备的二氧化氯溶液可使其成本显著下降,产品浓度、纯度明显提高,并使生产过程安全平稳、易操作、高效、环保。 With the present method of preparing chlorine dioxide solution so that the cost can be significantly reduced, product concentration, significantly improved the purity, safety and stable production process, easy to operate, efficient and environmentally friendly.

本发明通过下述技术方案予以实现:一种稳定性二氧化氯溶液的生产方法采用双氧水做还原剂,在硫酸介质中还原碱金属氯酸盐发生二氧化氯,它包括以下步骤:①由焦磷酸钠、2-羟基膦酰基乙酸、尿素按配比组成复合催化剂,重量比为1∶0.1~0.5∶0.5~1。 The present invention is realized by the following technical scheme: A method for the production of chlorine dioxide using hydrogen peroxide as reducing agent solution, reduction in the sulfuric acid medium alkali metal chlorate in chlorine dioxide occurs, which includes the following: ① From the coke sodium phosphate, 2-hydroxy phosphonoacetic acid, urea, according to the ratio of the catalyst composition of the composite, the weight ratio of 1:0.1 0.5:0.5 ~ ~ 1.

②将碱金属氯酸盐在配料罐中用软化水搅拌溶解,按配比加入过氧化氢溶液(30%)和复合催化剂,于常温下继续搅拌使完全溶解作为复合反应液,复合反应液配比,即碱金属氯酸盐、过氧化氢、软化水和复合催化剂的重量配比为1∶0.5~0.8∶0.4~1∶0.006~0.01。 ② The alkali metal chlorate is dissolved in demineralized water mixing tank with stirring, was added according to the ratio of hydrogen peroxide solution (30%) and the composite catalyst, and stirring was continued at room temperature so as to completely dissolve the reaction solution as a composite, the composite ratio of the reaction solution , i.e., alkali metal chlorate, hydrogen peroxide, demineralized water and the weight ratio of the composite catalyst 0.8:0.4 ~ 0.5 ~ 0.01 ~ 1:0.006.

③复合反应液与硫酸溶液按重量配比1∶1~1.5,经计量泵进入多梯级反应器中反应,产生二氧化氯气体,控制反应在0.02~0.05Mpa的负压及20~50℃的温度下进行,其中硫酸溶液的浓度为50~70%。 Compound ③ reaction solution with the sulfuric acid solution by weight ratio of 1/1 to 1.5 by metering pump into the multi-step reactor to produce chlorine dioxide gas, the reaction is controlled and the negative pressure 0.02 ~ 0.05Mpa of 20 ~ 50 ℃ at a temperature, wherein the concentration of sulfuric acid solution of 50 to 70%.

④二氧化氯气体经空气稀释后,用负压抽送至缓冲罐,然后导入组合式吸收塔与复合稳定吸收液进行稳定吸收处理,产生稳定性二氧化氯溶液;复合稳定吸收液由碳酸钠、氢氧化钠、过氧化氢、去离子水组成,配比是碳酸钠3.5~5%;氢氧化钠0.5~5%;过氧化氢4~17%;去离子水73~92%。 ④ chlorine dioxide gas diluted by the air pumped to the buffer tank by the negative pressure, and then introduced into an absorption tower combined with a composite absorbent in a stable stable absorption process, stabilized chlorine dioxide solution is generated; stable compound by the absorption liquid sodium, sodium hydroxide, hydrogen peroxide, deionized water, sodium carbonate ratio of 3.5 to 5%; 0.5 to 5% of sodium hydroxide; hydrogen peroxide, 4% to 17%; deionized water 73 to 92%.

上述过程反应原理为:-------------(1)-------------(2)-------------(3)综合(1)(2)(3)式:-------(4)--------------------(5)所述的稳定性二氧化氯溶液的生产方法,由焦磷酸钠、2-羟基膦酰基乙酸、尿素组成的复合催化剂的最佳重量配比是1∶0.35~0.45∶0.6~0.7;由碱金属氯酸盐、过氧化氢、软化水和复合催化剂组成的复合反应液的最佳重量比是1∶0.65~0.75∶0.6~0.7∶0.007~0.008;复合反应液与硫酸溶液的重量配比最佳1∶1.15~1.25;硫酸溶液的浓度最佳为60~70%。 The reaction principle of the above process: ------------- (1) ------------- (2) ------------ - (3) integrated (1) (2) (3) where: ------- (4) -------------------- (5) stabilized chlorine dioxide solution production process described later, the optimum weight of the composite catalyst by sodium pyrophosphate, 2-hydroxy-phosphonoacetic acid, and urea ratio is 1:0.35 0.45:0.6 ~ 0.7 ~; an alkali metal chloride best weight ratio of the composite reaction liquid acid, hydrogen peroxide, demineralized water and the composite catalyst composition is 1:0.65 0.75:0.6 ~ ~ ~ 0.7:0.007 0.008; by weight of the reaction solution with sulfuric acid composite ratio a best :1.15 ~ 1.25; optimum concentration of sulfuric acid solution of 60 to 70%.

本发明提供的二氧化氯溶液生产方法的具体工艺流程是这样的,首先把焦磷酸钠、2-羟基膦酰基乙酸、尿素按重量比1∶0.1~0.5∶0.5~1配成复合催化剂待用,然后将碱金属氯酸盐在配料罐中用软化水搅拌溶解,按配比加入过氧化氢溶液(30%)和复合催化剂,于常温下继续搅拌使完全溶解作为复合反应液,碱金属氯酸盐、过氧化氢、软化水和复合催化剂的重量配比为1∶0.5~0.8∶0.4~1∶0.006~0.01,碱金属氯酸盐最好用氯酸钠;然后将复合反应液与硫酸溶液按重量配比1∶1~1.5,经计量泵进入多梯级反应器中反应,产生二氧化氯气体,控制反应在0.02~0.05Mpa的负压及20~50℃的温度下进行,产生的高纯二氧化氯气体经空气稀释后,用负压抽送至净化器、缓冲罐,然后进入组合式吸收塔中,与由碳酸钠、氢氧化钠、过氧化氢、去离子水按配比组成的复合稳定吸 Specific process of producing chlorine dioxide solution is provided by the present invention, first of all the sodium pyrophosphate, 2-hydroxy phosphonoacetic acid, urea weight ratio of 1 1:0.1 ~ ~ 0.5:0.5 formulated composite catalyst inactive and the alkali metal chlorate is dissolved in demineralized water mixing tank with stirring, was added according to the ratio of hydrogen peroxide solution (30%) and the composite catalyst, stirring continued at ambient temperature was completely dissolved the reaction solution as a complex, an alkali metal chlorate salts, hydrogen peroxide, demineralized water and the weight ratio of the composite catalyst 0.8:0.4 ~ 0.5 ~ 0.01 ~ 1:0.006, alkali metal chlorate preferably sodium chlorate; then the reaction solution with sulfuric acid compound solution weight ratio of 1/1 to 1.5 by metering pump into the multi-step reactor to produce chlorine dioxide gas, to control the reaction under negative pressure 0.02 ~ 0.05Mpa and a temperature of 20 ~ 50 ℃ performed to produce high pure chlorine dioxide after dilution air, pumped to a vacuum cleaner with a buffer tank and then into absorption tower combined with a sodium carbonate, sodium hydroxide, hydrogen peroxide, deionized water at a composition ratio of compound stable suction 液进行充分气液接触,达到高效吸收的目的,生成二氧化氯含量2~8%浓度的多规格稳定性二氧化氯溶液,复合稳定吸收液的重量配比最佳为:碳酸纳-3.5~5%;氢氧化钠0.5~5%;过氧化氢4~17%;去离子水73~92%,在操作过程中为避免过氧化氢过量和在负压情况下过氧化氢分解损失,利用在稳定吸收过程中连续监测中间体产物含量、温度和PH值的方法,连续定量补加过氧化氢溶液,取得了极高的吸收收率和稳定、连续的操作过程,吸收收率99%以上。 Gas-liquid contact was sufficient to achieve the purpose of efficient absorption, generate 2-8% concentration of chlorine dioxide content more specifications stable chlorine dioxide solution, the weight ratio of the composite stable optimally absorbing liquid: sodium carbonate -3.5 ~ 5%; 0.5 to 5% of sodium hydroxide; hydrogen peroxide, 4% to 17%; deionized water 73 to 92%, during the operation in order to avoid an excess of hydrogen peroxide and negative pressure in the decomposition of hydrogen peroxide losses by continuous monitoring of the absorption process in a stable manner to intermediate product content, temperature and PH, supplemented continuous quantitative hydrogen peroxide solution, to obtain a high yield and stable absorption, continuous operation of the process, a yield of more than 99% absorption . 比过碳酸钠溶液吸收工艺降低成本40%以上,上述过程在稳定性二氧化氯溶液组合生产装置中完成。 Than sodium percarbonate solution absorption process to reduce the cost of more than 40%, the above-described process is completed composition stabilized chlorine dioxide solution production plant.

在反应过程中产生的残液一般为15~25%左右的硫酸氢钠溶液,经复配处理后作为稳定二氧化氯的活化剂或卫生间清洁除臭剂等副产品出售;反应残液也可经浓缩、结晶、过滤、干燥处理后,回收固体硫酸钠作为副产品出售,酸性滤液返回反应工段套用,生产过程无废液排放,不仅大大降低生产成本,且环保经济。 Raffinate produced during the reaction is generally about 15 to 25% solution of sodium bisulfate, after complex processing of stabilized chlorine dioxide as the activator or deodorant bathroom cleaning-product sold; raffinate reaction also may be concentration, crystallization, filtration, drying, solid was recovered over sodium sulfate as a byproduct to sell, apply the acidic filtrate was returned to the reactor section, the production process without waste emissions, not only greatly reduce the production cost, economical and environmentally friendly.

本发明与现有技术相比,其显著的优点是:①与目前主导工艺亚氯酸钠转化法、甲醇还原法相比,原料及动力消耗比亚氯酸钠法降低3倍,比甲醇法降低20~30%,另外彻底解决了甲醇法生产装置复杂、产品中甲醇含量易超标问题,产品中不含对人体有害的有机溶剂,也防止了环境污染。 Compared with the prior art the present invention that significant advantages are: ① dominant compared to the current transformation process sodium chlorite, methanol reduction, material and method to reduce power consumption of sodium chlorate Shakespeare 3 times, reducing the ratio of methanol Method 20 to 30%, while the methanol completely solved the production of complicated apparatus, the product is easy problem of excessive methanol content, the product does not contain harmful organic solvents, environmental pollution is prevented. ②复合催化剂的采用及二氧化氯发生工艺,有效解决了二氧化氯气体发生过程中的不稳定性,增大了工艺控制参数的操作范围,发生的二氧化氯纯度达98%以上,反应总收率达80%以上,生产效率大幅度提高。 ② The composite catalyst and chlorine dioxide generating process, an effective solution to the instability of chlorine dioxide occurs in the process of increasing the operating range of the process control parameters, the purity of chlorine dioxide occurs more than 98% of the total reaction yield of more than 80%, significantly increase productivity. ③采用特殊的复合稳定吸收液,取得了极高的吸收收率和稳定连续的操作过程,吸收率99%以上,比过碳酸钠溶液吸收工艺降低成本40%以上,可使稳定性二氧化氯溶液产品含量达到8%。 ③ The special composite stable absorbing liquid, to obtain a high yield and a stable absorption continuous operation, more than 99% absorption, the absorption ratio of sodium percarbonate solution process to reduce the cost of more than 40%, stabilized chlorine dioxide can product content was 8%. ④整个生产过程安全、运行平稳可靠,原料转化彻底,而且可连续自动生产,适于工业化生产。 ④ entire production process safe, stable and reliable, complete feedstock conversion, and continuous automatic production, suitable for industrial production.

附图说明 BRIEF DESCRIPTION

图1为本发明的工艺流程示意图。 Figure 1 is a process flow schematic diagram of the invention.

具体实施方式 Detailed ways

下面结合附图对本发明作进一步的说明。 DRAWINGS The invention will be further described below in connection.

实施例1: Example 1:

将生产产品规格浓度确定为2%。 The production of product specifications to determine the concentration of 2%. 首先把焦磷酸钠、2-羟基膦酰基乙酸、尿素按重量比1∶0.4∶0.7配成复合催化剂待用;然后按配比将氯酸钠在配料罐中用软化水搅拌溶解,加入过氧化氢溶液(30%)和复合催化剂,于常温下继续搅拌使完全溶解作为复合反应液,氯酸钠、过氧化氢、软化水和复合催化剂的重量配比为1∶0.7∶0.7∶0.008;向组合式吸收塔中加入复合稳定吸收液,配比为碳酸纳3.5%;氢氧化钠0.5%;过氧化氢5%;去离子水91%,控制多梯级反应器的反应负压在0.04~0.42Mpa、反应温度32~35C。 First, the sodium pyrophosphate, 2-hydroxy phosphonoacetic acid, urea weight ratio of the composite catalyst 1:0.4:0.7 dubbed stand; and sodium chlorate according to the ratio of demineralized water with dissolved with stirring in mixing tank, hydrogen peroxide solution (30%) and the composite catalyst, stirring continued at ambient temperature was completely dissolved the reaction solution as a complex, sodium chlorate, hydrogen peroxide, demineralized water and the weight ratio of the composite catalyst 1:0.7:0.7:0.008; the composition adding a compound of formula absorber liquid stable absorption, ratio of sodium carbonate, 3.5%; sodium hydroxide, 0.5%; 5% hydrogen peroxide; 91% deionized water, multi-step controlling a negative pressure in the reactor is 0.04 ~ 0.42Mpa reaction The reaction temperature is 32 ~ 35C. 运行8小时后,排出1.15吨稳定性二氧化氯水溶液,计算原料消耗成本为342元/吨产品,总收率89.1%,按连续碘量法测定产品中二氧化氯纯度为98.5%。 After 8 hours of operation, the discharge stability of aqueous chlorine dioxide 1.15 t, calculating the cost of raw material consumption of 342 yuan / ton of product, total yield 89.1%, determined by iodometry of continuous chlorine dioxide product purity of 98.5%. 按国家标准HG3669-2000所示检验方法进行检测,指标如下: Detected by the test method shown in the national standard HG3669-2000, indicators are as follows:

实施例2:将产品规格浓度确定为4%。 Example 2: The product specification is determined to be a concentration of 4%. 取复合催化剂焦磷酸钠、2-羟基瞵酰基乙酸、尿素的重量配比为1∶0.4∶0.6;复合反应液中氯酸钠、过氧化氢、软化水和复合催化剂的重量配比为1∶0.65∶0.76∶0.008;向组合式吸收塔中加入复合稳定吸收液,配比为碳酸纳4%;氢氧化钠1%;过氧化氢8%;去离子水87%,过氧化氢浓度30%,调整复合反应液流量为22L/h,硫酸溶液流量为26L/h,控制多梯级反应器的反应负压在0.04~0.42Mpa、反应温度32~35℃。 Take composite catalyst pyrophosphate, 2-hydroxy-phosphine acid group, the weight ratio of urea 1:0.4:0.6; composite reaction solution chlorite, hydrogen peroxide, demineralized water and the weight ratio of the composite catalyst 1: 0.65:0.76:0.008; complex was added to the combined absorber liquid stable absorption, ratio of sodium carbonate 4%; 1% of sodium hydroxide; 8% hydrogen peroxide; 87% deionized water, 30% concentration of hydrogen peroxide , the reaction liquid flow rate adjustment composite 22L / h, sulfuric acid solution flow 26L / h, the control multi-step reaction of a negative pressure in the reactor 0.04 ~ 0.42Mpa, the reaction temperature is 32 ~ 35 ℃. 运行15小时后,排出3.07吨稳定性二氧化氯水溶液,计算原料消耗成本为703元/吨产品,总收率88.2%,按连续碘量法测定产品中二氧化氯纯度为98.3%。 After 15 hours operation, the discharge stability of aqueous chlorine dioxide 3.07 t, calculating the cost of raw material consumption of 703 yuan / ton of product, total yield 88.2%, determined by iodometry of continuous chlorine dioxide in the product was 98.3% pure.

实施例3:将产品规格浓度确定为8%。 Example 3: The concentration of the product specification is determined to be 8%. 取复合催化剂焦磷酸钠、2-羟基瞵酰基乙酸、尿素重量配比为1∶0.5∶0.1;复合反应液中氯酸钠、过氧化氢、软化水和复合催化剂的重量配比为1∶0.65∶0.8∶0.008;向组合式吸收塔中加入复合稳定吸收液,配比为碳酸纳5%;氢氧化钠4.5%;过氧化氢16%;去离子水74.5%,调整复合反应液流量为27.5L/h,硫酸溶液流量为18.5L/h;纯水流量:14L/h;控制多梯级反应器的反应负压在0.04~0.42Mpa、反应温度32~35℃。 Take composite catalyst pyrophosphate, 2-hydroxy-acyl phosphine acid, urea weight proportions 1:0.5:0.1; composite reaction solution chlorite, hydrogen peroxide, demineralized water and the weight ratio of the composite catalyst 1:0.65 :0.8:0.008; complex was added to the combined absorption liquid stable absorption tower, the ratio is 5% sodium carbonate; sodium hydroxide, 4.5%; 16% hydrogen peroxide; 74.5% deionized water, adjust the flow rate of the reaction liquid compound 27.5 L / h, the flow rate of sulfuric acid solution of 18.5L / h; water flow rate: 14L / h; multi-step control of the negative pressure in the reactor of the reaction 0.04 ~ 0.42Mpa, the reaction temperature is 32 ~ 35 ℃. 运行8小时后,排出1.08吨稳定性二氧化氯水溶液,计算原料消耗成本为1448元/吨产品,总收率87.9%,按连续碘量法测定产品中二氧化氯纯度为98.1%。 After 8 hours of operation, the discharge stability of aqueous chlorine dioxide 1.08 tons, raw material consumption cost is calculated 1448 yuan / ton of product, total yield 87.9%, determined by iodometry of continuous chlorine dioxide product purity was 98.1%.

Claims (5)

1.一种稳定性二氧化氯溶液的生产方法,采用双氧水做还原剂,在硫酸介质中还原碱金属氯酸盐发生二氧化氯,其特征在于该生产方法包括以下步骤:①由焦磷酸钠、2-羟基膦酰基乙酸、尿素按配比组成复合催化剂,重量比为1∶0.1~0.5∶0.5~1;②将碱金属氯酸盐在配料罐中用软化水搅拌溶解,按配比加入30%的过氧化氢溶液和复合催化剂,于常温下继续搅拌使完全溶解作为复合反应液,复合反应液配比,即碱金属氯酸盐、过氧化氢、软化水和复合催化剂的重量配比为1∶0.5~0.8∶0.4~1∶0.006~0.01;③复合反应液与硫酸溶液按重量配比1∶1~1.5,经计量泵进入多梯级反应器中反应,产生二氧化氯气体,控制反应在0.02~0.05Mpa的负压及20~50℃的温度下进行,硫酸溶液浓度50~70%;④二氧化氯气体经稀释后,用负压抽送至缓冲罐,然后进入组合式吸收塔, 1. A method of producing stabilized chlorine dioxide solution using hydrogen peroxide reductant, reducing alkali metal chlorate, chlorine dioxide in sulfuric acid medium, characterized in that the production process comprises the following: ① From the pyrophosphate , 2-hydroxy phosphonoacetic acid, urea, according to the ratio of the catalyst composition of the composite, the weight ratio of 1:0.1 ~ 0.5:0.5 ~ 1; ② the alkali metal chlorate dissolved with stirring in demineralized water using a mixing tank, according to the ratio 30% hydrogen peroxide solution and the composite catalyst, stirring continued at ambient temperature was completely dissolved the reaction solution as a composite, the composite ratio of the reaction solution, i.e., an alkali metal chlorate, hydrogen peroxide, by weight of demineralized water and the composite catalyst ratio of 1 :0.5 ~ 0.8:0.4 ~ 1:0.006 ~ 0.01; ③ the composite reaction solution with the sulfuric acid solution by weight ratio of 1/1 to 1.5 by metering pump into the multi-step reactor to produce chlorine dioxide gas, the reaction control negative pressure and temperature of 0.02 ~ 0.05Mpa at 20 ~ 50 ℃, the concentration of sulfuric acid solution is 50 ~ 70%; ④ after diluted chlorine dioxide gas, pumped to a surge tank negative pressure, and then combined into the absorption column, 与复合稳定吸收液进行稳定吸收处理,产生稳定性二氧化氯溶液;复合稳定吸收液由碳酸钠、氢氧化钠、过氧化氢、去离子水组成,配比是碳酸钠3.5~5%;氢氧化钠0.5~5%;过氧化氢4~17%;去离子水73~92%。 Stabilizing the absorbent composite was subjected to absorption treatment stable, stabilized chlorine dioxide solution is generated; stable compound absorbing liquid by the sodium carbonate, sodium hydroxide, hydrogen peroxide, deionized water, sodium carbonate ratio of 3.5 to 5%; hydrogen sodium oxide, 0.5 to 5%; hydrogen peroxide, 4% to 17%; deionized water 73 to 92%.
2.根据权利要求1所述的一种稳定性二氧化氯溶液的生产方法,其特征是由焦磷酸钠、2-羟基膦酰基乙酸、尿素组成的复合催化剂的重量配比是1∶0.35~0.45∶0.6~0.7。 The method of producing a stabilized chlorine dioxide solution according to claim 1, wherein the ratio by weight of the composite catalyst by sodium pyrophosphate, 2-hydroxy-phosphonoacetic acid, and urea - is 1:0.35 0.45:0.6 to 0.7.
3.根据权利要求1所述的一种稳定性二氧化氯溶液的生产方法,其特征是由碱金属氯酸盐、过氧化氢、软化水和复合催化剂组成的复合反应液的重量比是1∶0.65~0.75∶0.6~0.7∶0.007~0.008。 The method of producing a stabilized chlorine dioxide solution according to claim 1, wherein an alkali metal chlorate, hydrogen peroxide, the weight ratio of the composite of demineralized water and the reaction solution is a composite catalyst composition :0.65 0.75:0.6 ~ ~ ~ 0.7:0.007 0.008.
4.根据权利要求1所述的一种稳定性二氧化氯溶液的生产方法,其特征是复合反应液与硫酸溶液的重量配比为1∶1.15~1.25。 4. A method of producing a stabilized chlorine dioxide solution according to claim 1, characterized in that the weight of the composite of the reaction solution with sulfuric acid ratio of 1.15 to 1.25.
5.根据权利要求1所述的一种稳定性二氧化氯溶液的生产方法,其特征是碱金属氯酸盐为氯酸钠。 5. A method of producing a stabilized chlorine dioxide solution according to claim 1, wherein the alkali metal chlorate is sodium chlorate.
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