CN102275965A - Free PAC production process heating - Google Patents

Free PAC production process heating Download PDF

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CN102275965A
CN102275965A CN 201110211796 CN201110211796A CN102275965A CN 102275965 A CN102275965 A CN 102275965A CN 201110211796 CN201110211796 CN 201110211796 CN 201110211796 A CN201110211796 A CN 201110211796A CN 102275965 A CN102275965 A CN 102275965A
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CN102275965B (en )
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周松玉
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周松玉
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Abstract

The invention discloses a heating-free production method of polyaluminum chloride. The heating-free production method comprises the following steps of: firstly, diluting a raw material, i.e. hydrochloric acid, into a needed concentration, then adding bauxite under the condition of continuous stirring, adding a proper amount of calcium aluminate powder till the temperature of a reaction liquid rises to 84-87 DEG C, then automatically raising the temperature to 95-105 DEG C for reaction through heat release, observing the concentration of the reaction liquid after the reaction is ended, diluting the concentration of the reaction liquid to a needed concentration, then adding calcium aluminate powder for polymerization reaction, adjusting the concentration of the reaction liquid to a needed concentration after the reaction is ended, and obtaining a liquid product, i.e. the polyaluminum chloride. According to the heating-free production method of the polyaluminum chloride, steam heating isnot needed, thus heating equipment is omitted, and hydraulic acid steam generated in the reaction process is recycled through an absorbing device. Therefore, the heating-free production method disclosed by the invention has the advantages of being low in investment cost, saving energy, reducing consumption and emission, being beneficial to environmental friendliness and having obvious economic benefits and social benefits.

Description

聚合氯化铝免加热的生产方法 Free PAC production process heating

技术领域 FIELD

[0001] 本发明涉及一种絮凝剂聚合氯化铝的生产方法,特别是涉及一种聚合氯化铝免加热的生产方法。 [0001] The present invention relates to a method of producing a flocculant PAC, PAC Free particularly to a method for producing heating.

背景技术 Background technique

[0002] 聚合氯化铝是一种无机高分子絮凝剂,广泛应用于城市和各种工业给水净化处理、工业废水的深度净化处理、油田地下水回注及污泥处理等领域。 [0002] PAC is an inorganic polymer flocculant is widely used in a variety of urban and industrial water purification treatment, the depth of field of purification of industrial waste water, ground water and oil sludge treatment reinjection. 聚合氯化铝是一种目前技术比较成熟、市场销量最大的无机高分子水处理絮凝剂,虽然关于聚合氯化铝的生产工艺相对来说比较成熟,但是在某种程度上仍存在有一定的缺陷。 PAC is a relatively mature technology at present, market sales of the largest inorganic polymer flocculant water treatment, although the production process on PAC is relatively mature, but still to some extent there is a certain defect.

[0003] 聚合氯化铝(PAC)是一种常用的高效水处理添加剂,盐酸、铝酸钙粉和铝土矿等含铝原料是制备聚合氯化铝主要的原材料。 [0003] polyaluminum chloride (PAC) is a common additive effective treatment, hydrochloric acid, calcium aluminate and bauxite aluminum powder starting material is prepared PAC main raw material. 随着经济的不断发展,人们对环境的日益重视,作为高效水处理添加剂的PAC用量也越来越大。 As the economy continues to develop, there is a growing emphasis on the environment, PAC dosage as an efficient water treatment additives are also growing. 目前PAC的生产工艺对环境和资源保护均十分不利,并且加热设备投资较大,不利于减排、降耗、节能。 Currently PAC production process are very detrimental to the environment and resource protection, and heating a large investment in equipment is not conducive to saving, saving, saving.

[0004] 目前,生产聚合氯化铝的现有技术存在的主要问题为: [0004] At present, the main problems of the prior art production of PAC are:

1、反应过程中需要蒸气加热,因而需要投资锅炉等加热设备,投资较大; 1, steam heating needed during the reaction, thus requiring heating boiler equipment investment, investment is large;

2、浪费能源:由于现有生产聚合氯化铝的反应过程中,需要通过两次蒸气加热,每次加热时间不少于2小时,从而需要使用大量的能源,并且排放大量的废酸蒸气,造成能源浪费。 2, waste of energy: Due to the reaction process prior PAC production, it is necessary through two heated steam, the heating time is less than 2 hours each time, thereby requiring the use of large amounts of energy and the discharge of a large amount of waste acid vapor, resulting in energy waste.

[0005] 3、现有生产聚合氯化铝反应过程中,因蒸气加热导致增加了反应设备的内压(蒸气压力一般在0. 6Mpa以上),从而使其反应所产生的废气从加料口处溢出,废气的溢出不仅对操作人员的人身安全造成了危害,而且对环境也造成了污染,热量由于没有回收也被浪费。 [0005] 3, the conventional production of PAC reaction process, due to the vapor heating results in an increase of the internal pressure of the device (usually 0. 6Mpa vapor pressure above), making it the exhaust gas generated by the reaction from the feed mouth overflow, caused by exhaust gas not only for the safety of operating personnel of the hazards, but also to the environment caused by pollution, heat recovery is also because there is no waste.

[0006] 4、现有生产聚合氯化铝反应过程中产生的盐酸蒸气溢出,造成了原材料的浪费。 [0006] 4, hydrochloric acid vapor existing production PAC overflow produced during the reaction, resulting in waste of raw materials.

[0007] 5、现有生产技术中采用凉水进行配酸,延长了加热时间,由此既浪费能源又增加工人劳动强度。 [0007] 5, the cold water used in the prior art for the production of an acid with, the heating time is extended, thereby increasing not only a waste of energy and labor intensity.

[0008] 关于絮凝剂聚合氯化铝也有不少专利文献。 [0008] For polyaluminum chloride flocculant, there are many patent documents. 例如:1、申请号为200810204171. 0、 发明名称为“聚合氯化铝的制备方法”的发明专利,该发明专利将含铝废酸或废酸至于反应釜,同时加入废铝或铝矾土,充分利用废酸与铝发生放热反应的热能进行预加热,然后补充加热至温度为95〜105°C,保持3〜5小时以使聚合反应完全。 For example: 1, Application No. 200810204171.0, entitled "Preparation of polyaluminum chloride" patented invention, the invention aluminum-containing spent acid or spent acid Patent As reactor, while adding scrap or bauxite full use of waste acid and aluminum heat exothermically preheated, then heated to a temperature supplemented 95~105 ° C, held three to five hours to complete the polymerization reaction. 沉淀或过滤法进行产品分离和富集。 Product separation and concentration filtration or precipitation. 2、申请号为200810183878. 8、发明名称为“用铝酸钙粉生产聚合氯化铝”的发明专利,该发明专利是采用铝酸钙粉为原料制备聚合氯化铝。 2, Application No. 200810183878.8, entitled "calcium aluminate powder production PAC" patented invention, which patent is the use of calcium aluminates prepared as polyaluminum chloride starting material.

发明内容 SUMMARY

[0009] 本发明的目的是克服聚合氯化铝现有生产技术中蒸气加热、浪费能源等缺陷,提供一种聚合氯化铝免加热的生产方法。 [0009] The object of the PAC of the present invention to overcome the prior art production of heated steam, waste of energy and other defects, there is provided a method for producing PAC Free heating.

[0010] 为了解决上述问题,本发明采用的技术方案是:本发明提供一种聚合氯化铝免加热的生产方法,所述生产方法包括以下步骤: [0010] In order to solve the above problems, the present invention adopts the technical scheme is: The present invention provides a process for producing polyaluminium chloride-free heating, said production method comprising the steps of:

a、配酸:以1吨质量百分浓度为30%的盐酸为加料基准,将其盐酸加入反应罐中,然后加入步骤b或步骤d中的吸收循环水,将质量百分浓度为30%的盐酸稀释至质量百分浓度为15〜20% ; a, with an acid: mass percent concentration of 1 ton of 30% hydrochloric acid addition to a reference, which hydrochloric acid was added to the reaction tank, followed by the addition of water absorption cycle of step b or step d, the mass percent concentration of 30% dilute hydrochloric acid to a concentration of 15 ~ 20% mass percent;

b、在不断搅拌的条件下,往反应罐中加入220〜350kg铝矾土,然后加入适量的铝酸钙粉,通过盐酸与铝酸钙粉之间的放热反应,反应液的温度随着铝酸钙粉的加入不断升高, 当反应液的温度上升至84〜87°C时停止加入铝酸钙粉,反应液的温度自行升温至95〜 105°C,在此温度条件下反应1. 5〜2小时,反应结束;在此反应过程中产生的盐酸蒸气利用吸收设备回收利用,盐酸蒸气回收利用过程中的吸收循环水应用到步骤a进行配酸或步骤c中稀释反应液; B, under conditions of continuous stirring, was added to the reaction tank 220~350kg bauxite, and then adding an appropriate amount of calcium aluminum powder, by the exothermic reaction between the hydrochloric acid and calcium aluminum powder, with the temperature of the reaction solution calcium aluminate powder was added rising, the reaction was stopped when the temperature rises to 84~87 ° C was added calcium aluminate powder, the temperature of the reaction solution was warmed to self 95~ 105 ° C, at this temperature, the reaction 1 . 5~2 hours, the reaction was complete; vapor produced in this reaction using a hydrochloric acid absorption process equipment for recycling, the water vapor absorption cycle using hydrochloric acid recovery process step applied to a reaction solution with an acid or a dilution step c;

C、利用步骤b盐酸蒸气回收利用过程中的吸收循环水稀释步骤b反应结束后的反应液,将其反应液的浓度稀释至20〜25波美度; C, step b using hydrochloric acid vapor recycled reaction liquid after completion of dilution water absorption cycle process step b of the reaction, the reaction solution was diluted to a concentration of 20 ~ 25 ° Baume;

d、聚合反应:在步骤c稀释后的反应液中加入铝酸钙粉250〜300kg,通过盐酸与铝酸钙粉之间的放热反应,反应液的温度自行升至100〜105°C,在此温度条件下反应40〜90 分钟,反应结束后利用吸收循环水稀释反应液至所需浓度,稀释后出料,得到产品液体聚合氯化铝;在此反应过程中产生的盐酸蒸气利用吸收设备回收利用,盐酸蒸气回收利用过程中的吸收循环水用于步骤a进行配酸或步骤c中稀释反应液。 d, the polymerization reaction: 250~300kg calcium aluminum powder was added to the reaction solution after the dilution step (c), by the exothermic reaction between the hydrochloric acid and calcium aluminate powder, the temperature of the reaction solution is raised self 100~105 ° C, the reaction 40~90 minutes at this temperature, after completion of the reaction using recycled water absorbing reaction solution was diluted to the desired concentration, diluted the material, the liquid product obtained PAC; vapor generated during the reaction of hydrochloric acid using an absorption recycling equipment, hydrochloric acid vapor recovery absorption during recycling water used in step a reaction solution with an acid or a dilution step c.

[0011] 根据上述的聚合氯化铝免加热的生产方法,步骤a中所述吸收循环水的温度为50 〜60Ό。 [0011] According to the method of producing PAC-free heating, a step in the absorption cycle water temperature is 50 ~60Ό.

[0012] 根据上述的聚合氯化铝免加热的生产方法,步骤b中所述铝矾土中Al2O3的质量百分含量为25〜40% ;所述铝酸钙粉中Al2O3的质量百分含量为48〜55%,活性Ca为9〜13。 [0012] According to the production method of the above-described PAC-free heating, the mass percentage of the alumina in step (b) is 25~40% Al2O3; the calcium aluminate powder mass percentage of Al2O3 48~55% of the activity of Ca 9~13.

[0013] 根据上述的聚合氯化铝免加热的生产方法,步骤b中反应结束后反应液的浓度为35〜38波美度。 [0013] According to the production method of the PAC-free heating, after concentration of the reaction solution of step b is 35~38 degrees Baume.

[0014] 根据上述的聚合氯化铝免加热的生产方法,步骤b中所述盐酸蒸气回收利用过程中吸收循环水的温度为50〜60°C。 [0014] According to the method of producing PAC-free heating step b in the hydrochloric acid vapor absorption cycle recycling process water temperature of 50~60 ° C.

[0015] 根据上述的聚合氯化铝免加热的生产方法,步骤c中所述将其反应液的浓度稀释至20〜25波美度时,反应液的温度为68〜72°C。 When the [0015] step c in the concentration of the reaction solution was diluted to 20 ~ 25 ° Baume aluminum chloride free according to the above method of producing a heated, the temperature of the reaction solution is 68~72 ° C.

[0016] 根据上述的聚合氯化铝免加热的生产方法,步骤b和步骤d中所述铝酸钙粉中Al2O3的质量百分含量为48〜55%,活性Ca为9〜13。 [0016] According to the method of producing PAC-free heating, steps b and d of the calcium aluminate powder mass percentage of 48~55% Al2O3, Ca is 9~13 activity.

[0017] 根据上述的聚合氯化铝免加热的生产方法,步骤d中所述盐酸蒸气回收利用过程中吸收循环水的温度为50〜60°C。 [0017] According to the method of producing PAC-free heating, vapor of hydrochloric acid in step d recycling water during the absorption cycle temperature of 50~60 ° C.

[0018] 本发明的积极有益效果: [0018] The positive and beneficial effects of the present invention:

1、本发明利用盐酸与铝和氧化钙的放热反应,通过控制原料的加入及其加入方式,研制出一种不需要加热即可制备聚合氯化铝的生产方法。 1, the present invention utilizes an exothermic reaction of hydrochloric acid with aluminum and calcium oxide, and by controlling the addition of feed addition method, heating is not required to develop a preparation method for producing PAC. 本发明方法由于不需要蒸气加热, 节省了加热设备投资,从而降低了投资成本,从而起到了节能、减排和降耗的作用。 The method of the present invention, since no steam heating, heating equipment investment savings, thereby reducing the investment cost, and thus acts as energy, and saving and emission reduction.

[0019] 2、本发明利用吸收设备,对其反应过程中产生的盐酸蒸气进行吸收,并将吸收循环水用于反应中配酸或稀释反应液。 [0019] 2, using an absorption apparatus of the present invention, absorption of its hydrochloric acid vapor produced during the reaction, and the absorption cycle with an acid or water in the reaction solution for diluting the reaction. 盐酸蒸气的回收利用既有利于操作人员的身体健康安全,又解决了能源和材料的浪费,增加了企业收入,同时又解决了盐酸蒸气外溢对环境造成的污染。 The use of hydrochloric acid vapor recovery is conducive to the health of the operator's safety, but also solved the waste of energy and materials, increased business revenues, but also solve the pollution hydrochloric acid vapor spills on the environment. 因而,本发明实现了节能、减排、降耗的效果,具有显著的经济效益和社会效益。 Accordingly, the present invention achieves the effect of energy saving, reduction, saving, has significant economic and social benefits. [0020] 3、本发明生产聚合氯化铝的反应设备是在常压条件下进行,能够安全生产并可延长反应设备的使用寿命。 [0020] 3, PAC production apparatus of the present invention, the reaction is carried out under atmospheric conditions, the production of safe and lifetime of the reaction apparatus.

[0021] 4、本发明生产聚合氯化铝过程中投料即为加热,与现有技术相比,可减少加热时间4小时以上,明显降低了工人的劳动时间和强度。 [0021] 4, PAC production process of the present invention is the heating feed, compared with the prior art, can reduce the heating time of 4 hours or more, significantly reducing the time and labor intensity.

[0022] 5、本发明生产聚合氯化铝的反应设备为常压设备,在搅拌设备功能允许的情况下,可有效扩大反应罐的容量,从而加大投料量,提高生产量。 [0022] 5, the present invention is the production of PAC reaction apparatus as pressure equipment, in the case where feature allows stirring apparatus can effectively expand the capacity of the reaction tank, thereby increasing the feeding amount, increase production.

[0023] 四、具体实施方式: [0023] IV DETAILED DESCRIPTION:

以下实施例仅为了进一步说明本发明,并不限制本发明的内容。 The following examples are provided only to further illustrate the content of the present invention is not intended to limit the present invention.

[0024] 实施例1 : 一种聚合氯化铝免加热的生产方法 [0024] Example 1: A method for producing heating PAC Free

本发明聚合氯化铝免加热的生产方法,所述生产方法的详细步骤如下: Free PAC production process of the present invention is heated, the detailed steps of the production process as follows:

a、配酸:以1吨质量百分浓度为30%的盐酸为加料基准,将其盐酸加入反应罐中,然后加入步骤b或步骤d中的吸收循环水(吸收循环水的温度为50〜60°C ),将质量百分浓度为30%的盐酸稀释至质量百分浓度为18% ; a, with an acid: mass percent concentration of 1 ton of 30% hydrochloric acid addition to a reference, which hydrochloric acid was added to the reaction tank, the water absorption cycle was then added in step b or step d temperature (water absorption cycle was 50~ 60 ° C), diluted mass percent concentration of 30% hydrochloric acid to a mass percent concentration of 18%;

b、在不断搅拌的条件下,往反应罐中加入290kg铝矾土 (铝矾土中Al2O3的质量百分含量为25〜40%),然后加入适量的铝酸钙粉(铝酸钙粉中Al2O3的质量百分含量为48〜55%, 活性Ca为9〜13),通过盐酸与铝酸钙粉之间的放热反应,反应液的温度随着铝酸钙粉的加入不断升高,当反应液的温度上升至85〜86°C时停止加入铝酸钙粉,反应液的温度自行升温至98〜100°C,在此温度条件下反应1. 8小时,反应结束,反应结束后反应液的浓度为36 波美度;在此反应过程中产生的盐酸蒸气利用吸收设备回收利用,盐酸蒸气回收利用过程中的吸收循环水应用到步骤a进行配酸或步骤c中稀释反应液(吸收循环水的温度为50〜 60 °C); B, under conditions of continuous stirring, was added to the reaction tank 290kg alumina (Al2O3 content alumina percentages by mass of 25~40%), followed by addition of a suitable amount of calcium aluminate powder (calcium aluminate powder Al2O3 mass percentage of 48~55% and the activity of Ca 9~13) by the exothermic reaction between the hydrochloric acid and calcium aluminate powder, the temperature of the reaction solution with the addition of calcium aluminate powder is rising, when the temperature of the reaction solution rose to 85~86 ° C was added calcium aluminate powder is stopped, the temperature of the reaction solution was warmed to self 98~100 ° C, reacted at this temperature, 1.8 hours, the reaction was completed, after the completion of the reaction concentration of the reaction solution was 36 ° Baume; vapors generated during the reaction using a hydrochloric acid absorption apparatus recycling, water vapor absorption cycle using hydrochloric acid recovery process is applied to a dilution step with an acid or a reaction solution of step c ( temperature of the circulating water absorption 50~ 60 ° C);

c、利用步骤b盐酸蒸气回收利用过程中的吸收循环水稀释步骤b反应结束后的反应液,将其反应液的浓度稀释至23波美度,此时反应液的温度为70°C ; C, step b using hydrochloric acid vapor recovery after completion of the reaction solution was diluted water absorption cycle using a process step b of the reaction, the reaction solution was diluted to a concentration of 23 Baume, the temperature of the reaction solution at this time was 70 ° C;

d、聚合反应:在步骤c稀释后的反应液中加入铝酸钙粉(铝酸钙粉中Al2O3的质量百分含量为48〜55%,活性Ca为9〜13),通过盐酸与铝酸钙粉之间的放热反应,反应液的温度自行升至102〜103°C,在此温度条件下反应50分钟,反应结束后利用吸收循环水稀释反应液至所需浓度,稀释后出料,得到产品液体聚合氯化铝;在此反应过程中产生的盐酸蒸气利用吸收设备回收利用,盐酸蒸气回收利用过程中的吸收循环水用于步骤a进行配酸或步骤c中稀释反应液(吸收循环水的温度为50〜60°C)。 d, the polymerization reaction: calcium aluminate powder was added to the reaction solution after the dilution step c (calcium aluminate powder mass percentage of Al2O3 was 48~55% and the activity of 9~13 Ca), aluminum and hydrochloric acid by exothermic reaction between calcium powder, the temperature of the reaction solution was raised to self 102~103 ° C, reacted at this temperature, 50 minutes after the completion of the reaction the desired concentration of a diluted absorption solution circulating water to the reaction, the material was diluted to give a liquid product PAC; vapor generated during the reaction using a hydrochloric acid absorption apparatus recycling, hydrochloric acid vapor recovery absorption process using recycled water used in step a of the reaction solution with an acid or diluted in step c (absorption the circulating water temperature 50~60 ° C).

[0025] 实施例2 :与实施例1基本相同,不同之处在于: [0025] Example 2: Example 1 is substantially the same, except that:

本发明聚合氯化铝免加热的生产方法,所述生产方法的详细步骤如下: 步骤a中:将质量百分浓度为30%的盐酸稀释至质量百分浓度为15% ; 步骤b中:往反应罐中加入260kg铝矾土,当反应液的温度上升至85〜86°C时停止加入铝酸钙粉,反应液的温度自行升温至96〜98°C,在此温度条件下反应1. 9小时,反应结束,反应结束后反应液的浓度为38波美度; Detailed steps of the present invention for Free heating PAC production process, the production process is as follows: step a: The diluted mass percent concentration of 30% hydrochloric acid to a mass percent concentration of 15%; Step b: To reaction vessel was added 260kg bauxite, calcium aluminum powder addition was stopped when the temperature of the reaction solution rose to 85~86 ° C, the temperature of the reaction solution was warmed to self 96~98 ° C, at this temperature, the reaction 1. 9 hours, the reaction was completed, the concentration of the reaction solution after the reaction was 38 ° Baume;

步骤c中:将其反应液的浓度稀释至20波美度,此时反应液的温度为68°C ; 步骤d中:在步骤c稀释后的反应液中加入铝酸钙粉250kg,反应液的温度自行升至100〜102°C,在此温度条件下反应80分钟。 Step c: concentration of the reaction solution was diluted to 20 Baume, the temperature of the reaction solution at this time was 68 ° C; step d: 250kg calcium aluminum powder was added to the reaction solution after the dilution step (c), the reaction solution the temperature was raised to self 100~102 ° C, reacted at this temperature for 80 minutes.

[0026] 实施例3 :与实施例1基本相同,不同之处在于:本发明聚合氯化铝免加热的生产方法,所述生产方法的详细步骤如下: 步骤a中:将质量百分浓度为30%的盐酸稀释至质量百分浓度为20% ; 步骤b中:往反应罐中加入320kg铝矾土,当反应液的温度上升至85〜86°C时停止加入铝酸钙粉,反应液的温度自行升温至103〜104°C,在此温度条件下反应1. 6小时,反应结束,反应结束后反应液的浓度为35波美度; [0026] Example 3: Example 1 is substantially the same, except that: the present invention for Free PAC production process heating, detailed steps of the production process as follows: step a: The mass percentage concentration of hydrochloric acid diluted to 30% by weight percent of 20%; step b: 320kg was added to the reaction tank bauxite, calcium aluminum powder addition was stopped when the temperature of the reaction solution rose to 85~86 ° C, the reaction solution self temperature was raised to 103~104 ° C, reacted at this temperature, 1.6 hours, the reaction was completed, the concentration of the reaction solution after the reaction was 35 ° Baume;

步骤c中:将其反应液的浓度稀释至22波美度,此时反应液的温度为69°C ; 步骤d中:在步骤c稀释后的反应液中加入铝酸钙粉300kg,反应液的温度自行升至104〜105°C,在此温度条件下反应40分钟。 Step c: concentration of the reaction solution was diluted to 22 Baume, the temperature of the reaction solution at this time was 69 ° C; step d: 300kg calcium aluminum powder was added to the reaction solution after the dilution step (c), the reaction solution the temperature was raised to self 104~105 ° C, reacted at this temperature for 40 min.

[0027] 实施例4 :与实施例1基本相同,不同之处在于: [0027] Example 4: Example 1 is substantially the same, except that:

本发明聚合氯化铝免加热的生产方法,所述生产方法的详细步骤如下: 步骤a中:将质量百分浓度为30%的盐酸稀释至质量百分浓度为19% ; 步骤b中:往反应罐中加入350kg铝矾土,当反应液的温度上升至86〜87°C时停止加入铝酸钙粉,反应液的温度自行升温至103〜105°C,在此温度条件下反应1. 5小时,反应结束,反应结束后反应液的浓度为37波美度; Detailed steps of the present invention for Free heating PAC production process, the production process is as follows: step a: The diluted mass percent concentration of 30% hydrochloric acid to a mass percent concentration of 19%; Step b: To was added to the reaction tank 350kg bauxite, calcium aluminum powder addition was stopped when the temperature of the reaction solution rose to 86~87 ° C, the temperature of the reaction solution was warmed to self 103~105 ° C, at this temperature, the reaction 1. 5 hours, the reaction was completed, the concentration of the reaction solution after the reaction was 37 ° Baume;

步骤c中:将其反应液的浓度稀释至25波美度,此时反应液的温度为72°C ; 步骤d中:在步骤c稀释后的反应液中加入铝酸钙粉^^kg,反应液的温度自行升至100〜102°C,在此温度条件下反应90分钟。 Step c: concentration of the reaction solution was diluted to 25 Baume, the temperature of the reaction solution at this time was 72 ° C; step d: calcium aluminum powder was added to the reaction solution after the dilution step c ^^ kg, the reaction temperature was raised to self 100~102 ° C, the reaction conditions at this temperature for 90 minutes.

[0028] 实施例5 :与实施例1基本相同,不同之处在于: [0028] Example 5: Example 1 is substantially the same, except that:

本发明聚合氯化铝免加热的生产方法,所述生产方法的详细步骤如下: 步骤a中:将质量百分浓度为30%的盐酸稀释至质量百分浓度为17% ; 步骤b中:往反应罐中加入220kg铝矾土,当反应液的温度上升至84〜85°C时停止加入铝酸钙粉,反应液的温度自行升温至95〜97°C,在此温度条件下反应2. 0小时,反应结束,反应结束后反应液的浓度为36波美度; Detailed steps of the present invention for Free heating PAC production process, the production process is as follows: step a: The diluted mass percent concentration of 30% hydrochloric acid to a mass percent concentration of 17%; Step b: To was added to the reaction tank 220kg bauxite, calcium aluminum powder addition was stopped when the temperature of the reaction solution rose to 84~85 ° C, the temperature of the reaction solution was warmed to self 95~97 ° C, at this temperature, the reaction 2. 0 hours, the reaction was completed, the concentration of the reaction solution after the reaction was 36 ° Baume;

步骤c中:将其反应液的浓度稀释至22波美度,此时反应液的温度为70°C ; 步骤d中:在步骤c稀释后的反应液中加入铝酸钙粉^K)kg,反应液的温度自行升至102〜103°C,在此温度条件下反应85分钟。 Step c: concentration of the reaction solution was diluted to 22 Baume, the temperature of the reaction solution at this time was 70 ° C; step d: addition of calcium aluminates ^ K) kg in the reaction solution after the dilution step c temperature of the reaction solution was raised to self 102~103 ° C, reacted at this temperature of 85 minutes.

Claims (8)

  1. 1. 一种聚合氯化铝免加热的生产方法,其特征在于,所述生产方法包括以下步骤:a、配酸:以1吨质量百分浓度为30%的盐酸为加料基准,将其盐酸加入反应罐中,然后加入步骤b或步骤d中的吸收循环水,将质量百分浓度为30%的盐酸稀释至质量百分浓度为15〜20% ;b、在不断搅拌的条件下,往反应罐中加入220〜350kg铝矾土,然后加入适量的铝酸钙粉,通过盐酸与铝酸钙粉之间的放热反应,反应液的温度随着铝酸钙粉的加入不断升高, 当反应液的温度上升至84〜87°C时停止加入铝酸钙粉,反应液的温度自行升温至95〜 105°C,在此温度条件下反应1. 5〜2小时,反应结束;在此反应过程中产生的盐酸蒸气利用吸收设备回收利用,盐酸蒸气回收利用过程中的吸收循环水应用到步骤a进行配酸或步骤c中稀释反应液;C、利用步骤b盐酸蒸气回收利用过程中的吸收循环水 1. A method for producing PAC-free heating, characterized in that said producing method comprising the steps of: a, with an acid: mass percent concentration of 1 ton of 30% hydrochloric acid addition to a reference to its hydrochloride added to the reaction tank, followed by the addition of water absorption cycle of step b or step d, the diluted mass percent concentration of 30% hydrochloric acid to a mass percent concentration of 15~20%; b, under conditions of constant stirring, to reaction vessel was added 220~350kg bauxite, and then adding an appropriate amount of calcium aluminum powder, by the exothermic reaction between the hydrochloric acid and calcium aluminate powder, the temperature of the reaction solution with the addition of calcium aluminate powder is rising, is stopped when the temperature of the reaction solution rose to 84~87 ° C was added calcium aluminate powder, the temperature of the reaction solution was warmed to self 95~ 105 ° C, reacted at this temperature, 1 5~2 hours to complete the reaction; and vapor reaction process produces hydrochloric acid using an absorption equipment for recycling, hydrochloric acid vapor recovery absorption utilizing circulating water during application to the step of a reaction solution with an acid or step c dilution; C, using in step b hydrochloric acid vapor recycling process the absorption cycle water 释步骤b反应结束后的反应液,将其反应液的浓度稀释至20〜25波美度;d、聚合反应:在步骤c稀释后的反应液中加入铝酸钙粉250〜300kg,通过盐酸与铝酸钙粉之间的放热反应,反应液的温度自行升至100〜105°C,在此温度条件下反应40〜90 分钟,反应结束后利用吸收循环水稀释反应液至所需浓度,稀释后出料,得到产品液体聚合氯化铝;在此反应过程中产生的盐酸蒸气利用吸收设备回收利用,盐酸蒸气回收利用过程中的吸收循环水用于步骤a进行配酸或步骤c中稀释反应液。 After completion of step b release reaction solution, the reaction solution was diluted to a concentration of 20 ~ 25 ° Baume; D, polymerization: 250~300kg calcium aluminum powder was added to the reaction solution after the dilution step (c), with hydrochloric acid the exothermic reaction between the calcium aluminate powder and the temperature of the reaction solution was raised to self 100~105 ° C, reacted at this temperature, 40~90 minutes. after completion of the reaction by using the reaction solution was diluted absorbent circulating water to the desired concentration after the material was diluted to give a liquid product PAC; vapor generated during the reaction using a hydrochloric acid absorption apparatus recycling, water vapor absorption cycle hydrochloric acid in the recycling process for used in step a or step (c) with an acid The reaction solution was diluted.
  2. 2.根据权利要求1所述的聚合氯化铝免加热的生产方法,其特征在于:步骤a中所述吸收循环水的温度为50〜60°C。 The PAC of the heat-free production process 1 according to claim wherein: in step a the temperature of the circulating water absorbing 50~60 ° C.
  3. 3.根据权利要求1所述的聚合氯化铝免加热的生产方法,其特征在于:步骤b中所述铝矾土中Al2O3的质量百分含量为25〜40% ;所述铝酸钙粉中Al2O3的质量百分含量为48〜 55%,活性Ca为9〜13。 The PAC according to claim 1 Free method of producing a heated, wherein: the mass percentage of the alumina in step (b) is 25~40% Al2O3; the calcium aluminate powder the mass percentage of Al2O3 is 48~ 55% active Ca is 9~13.
  4. 4.根据权利要求1所述的聚合氯化铝免加热的生产方法,其特征在于:步骤b中反应结束后反应液的浓度为35〜38波美度。 4. A method for producing heating Free, wherein said polyaluminum chloride according to claim 1: concentration after the reaction solution of step b is 35~38 degrees Baume.
  5. 5.根据权利要求1所述的聚合氯化铝免加热的生产方法,其特征在于:步骤b中所述盐酸蒸气回收利用过程中吸收循环水的温度为50〜60°C。 The PAC of the heat-free production process 1 according to claim wherein: said step (b) recycling the vapor of hydrochloric acid during the absorption cycle water temperature of 50~60 ° C.
  6. 6.根据权利要求1所述的聚合氯化铝免加热的生产方法,其特征在于:步骤c中所述将其反应液的浓度稀释至20〜25波美度时,反应液的温度为68〜72°C。 The PAC according to claim 1 Free method of producing a heated, wherein: the concentration of the reaction solution was diluted to 20 ~ 25 ° Baume step (c), the temperature of the reaction solution is 68 ~72 ° C.
  7. 7.根据权利要求1所述的聚合氯化铝免加热的生产方法,其特征在于:步骤b和步骤d 中所述铝酸钙粉中Al2O3的质量百分含量为48〜55%,活性Ca为9〜13。 The method for producing PAC 1 Free heated claim, wherein: in steps b and d of the calcium aluminate powder mass percentage of Al2O3 was 48~55%, active Ca It is 9~13.
  8. 8.根据权利要求1所述的聚合氯化铝免加热的生产方法,其特征在于:步骤d中所述盐酸蒸气回收利用过程中吸收循环水的温度为50〜60°C。 1 according to the PAC production process as claimed in claim Free heating, wherein: said step d, using HCl vapor recovery during the absorption cycle water temperature of 50~60 ° C.
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