KR100730578B1 - Manufacturing method of the poly aluminum chloride of hig bacicity - Google Patents

Manufacturing method of the poly aluminum chloride of hig bacicity Download PDF

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KR100730578B1
KR100730578B1 KR1020060072437A KR20060072437A KR100730578B1 KR 100730578 B1 KR100730578 B1 KR 100730578B1 KR 1020060072437 A KR1020060072437 A KR 1020060072437A KR 20060072437 A KR20060072437 A KR 20060072437A KR 100730578 B1 KR100730578 B1 KR 100730578B1
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hcl
parts
aluminum
chloride
weight
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이동석
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미주엔비켐 주식회사
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    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/48—Halides, with or without other cations besides aluminium
    • C01F7/56—Chlorides
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron

Abstract

A method for manufacturing high basicity polyaluminum chloride is provided to prepare the polyaluminum chloride with high basicity for purifying drinking water by reacting HCl with Na2CO3 then adding Al(OH)3 to the reaction product after removal of CO2 from the reaction product. The method includes the steps of: mixing 32% of hydrochloric acid(HCl) and sodium carbonate(Na2CO3) to form sodium and hydroxides, that is, [Na2 + Cl(OH)]; adding aluminum hydroxide, Al(OH)3, to the sodium and hydroxides; reacting the mixture at 150-200deg.C for 8 to 12 hours to generate polyaluminum chloride. Particularly, polyaluminum chloride is prepared by mixing 6000wt. parts of HCl and 250-1250wt. parts of Na2CO3 and adding 3000wt. parts of Al(OH)3 and 5750-6750wt. parts of H2O to the mixture. The obtained polyaluminum chloride contains 11% aluminum oxide and has 50-80% of basicity.

Description

고염기도 폴리염화알루미늄 제조방법{Manufacturing method of the poly aluminum chloride of hig bacicity}Manufacturing method of the high basic poly aluminum chloride {Manufacturing method of the poly aluminum chloride of hig bacicity}

본 발명은 고염기도 폴리염화알루미늄 제조방법에 관한 것으로, 염산(HCl)과 탄산나트륨(Na2CO3)을 반응시킨 후 탄산가스(CO2)를 제거시키고 수산화알루미늄(Al(OH)3)을 투입하여 고온(120~180℃), 고압(2~5㎏/㎠) 반응에 의해 The present invention relates to a method for producing a polybasic aluminum chloride, the reaction of hydrochloric acid (HCl) and sodium carbonate (Na 2 CO 3 ), remove the carbon dioxide (CO 2 ) and add aluminum hydroxide (Al (OH) 3 ). High temperature (120 ~ 180 ℃), high pressure (2 ~ 5㎏ / ㎠)

〔AL2(OH)nCl6-n〕m , 1≤n≤5, m≤10 으로 구성되는 고염기도 폴리염화알루미늄 제조방법에 관한 것이다.[AL 2 (OH) nCl 6-n] m, 1 ≦ n ≦ 5, m ≦ 10 relates to a method for producing a polyaluminum chloride.

폴리염화알루미늄은 일반적으로 47~60%를 함유하는 수산화알루미늄(Al(OH)3 )의 1몰과 32~35%를 함유하는 염산(HCL) 2몰을 혼합한 후 120~180℃에서 7~8시간 교반하고 물을 희석하여 염기도가 42~43%이고 10~17%의 농도의 산화알루미늄(Al2O3)을 갖는 폴리염화알루미늄을 얻거나, 수용액으로 폴리염화알루미늄을 얻을 때는 〔Al2(OH)nCl6-n〕m 이 아코착이온〔Al(H2O)6〕을 가지는 화합물이기 때문에 수산기(OH)를 가교해서 다핵 체제가 되고 핵은 증가해서 거대화한 무기 고분자 화 합물을 얻게 되는 일반적 방법을 사용하게 된다.Polyaluminum chloride is generally mixed with 1 mole of aluminum hydroxide (Al (OH) 3 ) containing 47-60% and 2 moles of hydrochloric acid (HCL) containing 32-35%, then at 7-120 ° C. stirred for 8 hours and diluted with water basicity is 42-43% and obtain a poly-aluminum chloride having from 10 to 17% of aluminum oxide (Al 2 O 3) at a concentration of, or, when obtained poly aluminum chloride with an aqueous solution [Al 2 Since (OH) nCl6-n] m is a compound having an azo complex [Al (H 2 O) 6], the hydroxyl group (OH) is crosslinked to form a multinuclear system, and the nucleus is increased to obtain a large inorganic polymer compound. The usual method is used.

상기와 같은 제조방법에서도 염기도를 올리기 위해서는 탄산나트륨(Na2CO3)을 폴리염화알루미늄(PAC)에 첨가하게 된다.In the above production method, in order to increase the basicity, sodium carbonate (Na 2 CO 3 ) is added to polyaluminum chloride (PAC).

상기와 같이 탄산나트륨(Na2CO3)을 폴리염화알루미늄에 첨가하게 되면 탄산가스(CO2)에 의해 폴리염화알루미늄의 구조가 취약하게 되고 외부 온도가 상온 보다 낮거나 높은 경우 폴리염화알루미늄의 구조가 변형되어 수산화알루미늄(Al(OH)3)의 침전물이 발생하여 물의 정제능력이 떨어질 뿐 아니라 침전물의 빈번한 청소의 부담이 있다.When sodium carbonate (Na 2 CO 3 ) is added to the polyaluminum chloride as described above, the structure of the polyaluminum chloride becomes weak due to the carbon dioxide gas (CO 2 ), and when the external temperature is lower or higher than room temperature, the structure of the polyaluminum chloride is Deformation occurs to precipitate of aluminum hydroxide (Al (OH) 3 ) to reduce the purification capacity of water as well as the burden of frequent cleaning of the precipitate.

본 발명은 상기와 같이 탄산나트륨(Na2CO3)의 첨가에 의한 탄산가스(CO2) 발생으로 폴리염화알루미늄의 구조가 변형되어 처리능력의 저하와 수산화알루미늄(Al(OH)3)의 침전물이 발생하는 것을 방지하기 위해 1차 염산(HCl)과 탄산나트륨(Na2CO3)을 반응(HCl+Na2CO3→Na2OCl+H+CO2)시켜 반응에 의해 탄산가스(CO2)를 제거한 후, 수산화알루미늄(Al(OH)3)을 투입하고 고온(150~200℃), 고압(2~5㎏/㎠)에서 반응시켜 염기도를 조절할 수 있는 고염기도 폴리염화알루미늄의 제조방법을 제공하는데 그 목적이 있다.The present invention is a precipitate of sodium carbonate (Na 2 CO 3) the carbon dioxide (CO 2) generated in polyaluminum structure is aluminum reduced and the hydroxide of the deformation processing power of the chloride (Al (OH) 3) by the addition of such as the To prevent the occurrence of the reaction, primary hydrochloric acid (HCl) and sodium carbonate (Na 2 CO 3 ) are reacted (HCl + Na 2 CO 3 → Na 2 OCl + H + CO 2 ) to react carbon dioxide gas (CO 2 ) by reaction. After removal, aluminum hydroxide (Al (OH) 3 ) is added and reacted at a high temperature (150 ~ 200 ℃), high pressure (2 ~ 5㎏ / ㎠) to provide a method for producing a high basic polybasic aluminum chloride that can control the basicity. Its purpose is to.

본 발명은 염산(HCL)과 탄산나트륨(Na2CO3)을 반응(HCl+Na2CO3→Na2OCl+H+CO2)시켜 반응에 의해 탄산가스(CO2)를 제거한 후, 수산화알루미늄(Al(OH)3)을 투입하고 고온(150~200℃), 고압(2~5㎏/㎠)에서 고염기도 폴리염화알루미늄을 제조하는 특징이 있다.The present invention removes carbon dioxide (CO 2 ) by reaction by hydrochloric acid (HCL) and sodium carbonate (Na 2 CO 3 ) (HCl + Na 2 CO 3 → Na 2 OCl + H + CO 2 ), and then aluminum hydroxide (Al (OH) 3 ) It is characterized in that the high base (150 ~ 200 ℃), high pressure (2 ~ 5kg / ㎠) to produce a high base polyaluminum chloride.

본 발명을 실시예를 통하여 설명하고자 한다.The present invention will be described through examples.

탁 도Turbidity pHpH 알카리도(PPM)CaCO3 Alkaline (PPM) CaCO 3 수온(℃)Water temperature (℃) 66 7.197.19 32.632.6 24.824.8

표-1TABLE-1

상기 표-1은 고염기도 폴리염화알루미늄의 탁도를 실험 대상의 원수 수치이다.Table 1 shows raw water values of experiment subjects for the turbidity of polybasic aluminum chloride.

Al2O3농도(ppm)Al 2 O 3 concentration (ppm) 22 44 66 88 1010 응집후pHPH after aggregation 7.167.16 7.147.14 7.107.10 6.996.99 6.976.97 잔류탁도(NTU)Residual Turbidity (NTU) 0.370.37 0.340.34 0.300.30 0.240.24 0.240.24 탁도제거율(%)Turbidity removal rate (%) 92.692.6 93.293.2 94.094.0 95.295.2 95.295.2

표-2TABLE-2

상기 표-2는 대상원수에 산화알루미늄(Al2O3)10% 농도로 염기도 70%를 가질 때, 나타난 탁도제거율의 수치이다.Table 2 shows the turbidity removal rate when the base water has a basicity of 70% at a concentration of 10% of aluminum oxide (Al 2 O 3 ).

Al2O3농도(ppm)Al 2 O 3 concentration (ppm) 22 44 66 88 1010 응집후pHPH after aggregation 7.107.10 6.946.94 6.796.79 6.676.67 6.496.49 잔류탁도(NTU)Residual Turbidity (NTU) 0.900.90 1.171.17 1.181.18 1.121.12 1.591.59 탁도제거율(%)Turbidity removal rate (%) 82.082.0 77.677.6 76.476.4 77.677.6 68.268.2

표-3TABLE-3

상기 표-3는 대상원수에 산화알루미늄(Al2O3)10%의 농도로 염기도 45%를 가질 때, 나타난 탁도제거율의 수치이다.Table 3 is a numerical value of the turbidity removal rate when the base water has a basicity of 45% at a concentration of 10% of aluminum oxide (Al 2 O 3 ).

Al2O3(ppm)Al 2 O 3 (ppm) 22 44 66 88 1010 응집후pHPH after aggregation 7.107.10 7.047.04 6.696.69 6.486.48 6.246.24 잔류탁도(NTU)Residual Turbidity (NTU) 3.403.40 1.741.74 1.711.71 1.311.31 1.411.41 탁도제거율(%)Turbidity removal rate (%) 32.032.0 65.265.2 65.865.8 73.873.8 71.871.8

표-4Table-4

상기 표-4는 대상 원수에 황산알루미늄(Al2(SO4)3×H2O)를 주입하고 산화알루미늄(Al2O3)이 7%일때, 나타난 탁도제거율의 수치이다.Table 4 shows the turbidity removal rate when aluminum sulfate (Al 2 (SO 4 ) 3 × H 2 O) is injected into the raw water and aluminum oxide (Al 2 O 3 ) is 7%.

상기 표-2는 대상원수에 본 발명에서 10%의 산화알루미늄(Al2O3)을 사용하여 고염기도(70%)를 구성한 응집제의 실험이다.Table 2 is an experiment of a coagulant composed of a high base (70%) using 10% aluminum oxide (Al 2 O 3 ) in the present invention in the raw water.

상기 표-3은 대상원수에 대한 10%의 산화알루미늄(Al2O3)의 염기도(45%)를 구성한 응집제의 실험이다.Table 3 shows an experiment of a coagulant constituting a basicity (45%) of 10% aluminum oxide (Al 2 O 3 ) with respect to the raw water.

상기 표-4는 대상원수에 산화알루미늄(Al2O3) 7%의 황산알루미늄(Al2(SO4)3×H2O)을 사용한 응집제의 실험이다.Table 4 shows an experiment of a flocculant using aluminum oxide (Al 2 O 3 ) 7% aluminum sulfate (Al 2 (SO 4 ) 3 × H 2 O) as the target raw water.

본 발명에서 실시하는 실시 예는 각 응집제의 동일한 산화알루미늄(Al2O3)의 투입량에 따라 탁도제거율 및 pH 변화에 대한 실험을 한 것이다.The embodiment carried out in the present invention is an experiment on the turbidity removal rate and pH change according to the input amount of the same aluminum oxide (Al 2 O 3 ) of each flocculant.

실시예-1Example-1

32%의 염산(HCl)6000㎏과 탄산나트륨(Na2C03)250㎏을 혼합한 후, 생성된 탄산가스(CO2)를 제거하고 HCl+Na2C03→Na2+Cl(OH)+CO2↑의 반응에 의해 저 염기성(OH)의 수산염나트륨〔Na2+Cl(OH)〕이 형성되도록 한다.After mixing 6000 kg of 32% hydrochloric acid (HCl) and 250 kg of sodium carbonate (Na 2 CO 3 ), the produced carbon dioxide (CO 2 ) is removed and HCl + Na 2 CO 3 → Na 2 + Cl (OH) + The reaction of CO 2 ↑ causes low basic sodium hydroxide [Na 2 + Cl (OH)] to be formed.

상기 수산염 나트륨〔Na2+Cl(OH)〕에 수산화 알루미늄(Al(OH)3) 3000㎏을 투입하고 150~200℃의 온도로 8~12시간 동안 반응시킨 후 물6750㎏을 희석시켜 염기도 50%이고 11%의 산화알루미늄(Al203)을 함유하는 폴리염화알루미늄(Al2(OH)3Cl3) 16000㎏을 얻을 수 있다.3000 kg of aluminum hydroxide (Al (OH) 3 ) was added to the sodium hydroxide [Na 2 + Cl (OH)] and reacted at a temperature of 150 to 200 ° C. for 8 to 12 hours. 16000 kg of polyaluminum chloride (Al 2 (OH) 3 Cl 3 ) containing 11% aluminum oxide (Al 2 O 3 ) can be obtained.

실시예-2Example-2

32%의 염산(HCl)6000㎏과 탄산나트륨(Na2C03)500㎏을 혼합한 후, 생성된 탄산가스(CO2)를 제거하고 HCl+Na2C03→Na2+Cl(OH)+CO2↑의 반응에 의해 저 염기성(OH)의 수산염 나트륨〔Na2+Cl(OH)〕을 형성하도록 한다.After mixing 6000 kg of 32% hydrochloric acid (HCl) and 500 kg of sodium carbonate (Na 2 CO 3 ), the produced carbon dioxide (CO 2 ) is removed and HCl + Na 2 CO 3 → Na 2 + Cl (OH) + The reaction of CO 2 ↑ forms low basic (OH) sodium hydroxide [Na 2 + Cl (OH)].

상기 수산염 나트륨〔Na2+Cl(OH)〕에 수산화 알루미늄(Al(OH)3) 3000㎏을 투입하고 150~200℃의 온도로 8~12시간 동안 반응시킨 후 물6500㎏을 희석시켜 염기도 55%이고 11%의 산화알루미늄(Al203)을 함유하는 폴리염화알루미늄(Al2(OH)3.3Cl2 .7) 16000㎏을 얻을 수 있다.3000 kg of aluminum hydroxide (Al (OH) 3 ) was added to the sodium hydroxide [Na 2 + Cl (OH)] and reacted at a temperature of 150 to 200 ° C. for 8 to 12 hours. %, and it is possible to obtain a poly aluminum chloride containing aluminum oxide (Al 2 0 3) of 11% (Al 2 (OH) 3.3 Cl 2 .7) 16000㎏.

실시예-3Example-3

32%의 염산(HCl)6000㎏과 탄산나트륨(Na2C03)750㎏을 혼합한 후, 생성된 탄산가스(CO2)를 제거하고 HCl+Na2C03→Na2+Cl(OH)+CO2↑의 반응에 의해 저 염기성(OH)의 수산염 나트륨〔Na2+Cl(OH)〕을 형성하도록 한다.After mixing 6000 kg of 32% hydrochloric acid (HCl) and 750 kg of sodium carbonate (Na 2 CO 3 ), the produced carbon dioxide (CO 2 ) is removed and HCl + Na 2 CO 3 → Na 2 + Cl (OH) + The reaction of CO 2 ↑ forms low basic (OH) sodium hydroxide [Na 2 + Cl (OH)].

상기 수산염 나트륨〔Na2+Cl(OH)〕에 수산화 알루미늄(Al(OH)3) 3000㎏을 투입하고 150~200℃의 온도로 8~12시간 동안 반응시킨 후 물6250㎏을 희석시켜 염기도 60%이고 11%의 산화알루미늄(Al203)을 함유하는 폴리염화알루미늄(Al2(OH)3.6Cl2 .4) 16000㎏을 얻을 수 있다.3000 kg of aluminum hydroxide (Al (OH) 3 ) was added to the sodium hydroxide [Na 2 + Cl (OH)] and reacted at a temperature of 150 to 200 ° C. for 8 to 12 hours. %, and it is possible to obtain a poly aluminum chloride containing aluminum oxide (Al 2 0 3) of 11% (Al 2 (OH) 3.6 Cl 2 .4) 16000㎏.

실시예-4Example-4

32%의 염산(HCl)6000㎏과 탄산나트륨(Na2C03)1000㎏을 혼합한 후, 생성된 탄산가스(CO2)를 제거하고 HCl+Na2C03→Na2+Cl(OH)+CO2↑의 반응에 의해 저 염기성(OH)의 수산염 나트륨〔Na2+Cl(OH)〕을 형성하도록 한다.After mixing 6000 kg of 32% hydrochloric acid (HCl) and 1000 kg of sodium carbonate (Na 2 CO 3 ), the produced carbon dioxide (CO 2 ) is removed and HCl + Na 2 CO 3 → Na 2 + Cl (OH) + The reaction of CO 2 ↑ forms low basic (OH) sodium hydroxide [Na 2 + Cl (OH)].

상기 수산염 나트륨〔Na2+Cl(OH)〕에 수산화 알루미늄(Al(OH)3) 3000㎏을 투입하고 150~200℃의 온도로 8~12시간 동안 반응시킨 후 물6000㎏을 희석시켜 염기도 65%이고 11%의 산화알루미늄(Al203)을 함유하는 폴리염화알루미늄(Al2(OH)3.9Cl2 .1) 16000㎏을 얻을 수 있다.3000 kg of aluminum hydroxide (Al (OH) 3 ) was added to the sodium hydroxide [Na 2 + Cl (OH)] and reacted at a temperature of 150 to 200 ° C. for 8 to 12 hours. %, and it is possible to obtain a poly aluminum chloride containing aluminum oxide (Al 2 0 3) of 11% (Al 2 (OH) 3.9 Cl 2 .1) 16000㎏.

실시예-5Example-5

32%의 염산(HCl)6000㎏과 탄산나트륨(Na2C03)1250㎏을 혼합한 후, 생성된 탄산가스(CO2)를 제거하고 HCl+Na2C03→Na2+Cl(OH)+CO2↑의 반응에 의해 저 염기성(OH)의 수산염 나트륨〔Na2+Cl(OH)〕을 형성하도록 한다.After mixing 6000 kg of 32% hydrochloric acid (HCl) and 1250 kg of sodium carbonate (Na 2 CO 3 ), the produced carbon dioxide (CO 2 ) is removed and HCl + Na 2 CO 3 → Na 2 + Cl (OH) + The reaction of CO 2 ↑ forms low basic (OH) sodium hydroxide [Na 2 + Cl (OH)].

상기 수산염 나트륨〔Na2+Cl(OH)〕에 수산화 알루미늄(Al(OH)3 3000㎏을 투입하고 150~200℃의 온도로 8~12시간 동안 반응시킨 후 물5750㎏을 희석시켜 염기도 70%이 고 11%의 산화알루미늄(Al203)을 함유하는 폴리염화알루미늄(Al2(OH)4.2.Cl1 .8) 16000㎏을 얻을 수 있다.3000 kg of aluminum hydroxide (Al (OH) 3 ) was added to the sodium hydroxide [Na 2 + Cl (OH)] and reacted at a temperature of 150 to 200 ° C. for 8 to 12 hours, followed by dilution of water 5750 kg to 70% basicity. of aluminum oxide and 11% polyaluminum chloride containing (Al 2 0 3) (Al 2 (OH) 4.2. Cl 1 .8) it can be obtained 16000㎏.

실시예-6Example-6

32%의 염산(HCl)6000㎏과 탄산나트륨(Na2C03)1500㎏을 혼합한 후, 생성된 탄산가스(CO2)를 제거하고 HCl+Na2C03→Na2+Cl(OH)+CO2↑의 반응에 의해 저 염기성(OH)의 수산염 나트륨〔Na2+Cl(OH)〕을 형성하도록 한다.After mixing 6000 kg of 32% hydrochloric acid (HCl) and 1500 kg of sodium carbonate (Na 2 CO 3 ), the produced carbon dioxide (CO 2 ) is removed and HCl + Na 2 CO 3 → Na 2 + Cl (OH) + The reaction of CO 2 ↑ forms low basic (OH) sodium hydroxide [Na 2 + Cl (OH)].

상기 수산염 나트륨〔Na2+Cl(OH)〕에 수산화 알루미늄(Al(OH)3 3000㎏을 투입하고 150~200℃의 온도로 8~12시간 동안 반응시킨 후 물5500㎏을 희석시켜 염기도 75%이고 11%의 산화알루미늄(Al203)을 함유하는 폴리염화알루미늄(Al2(OH)4.5Cl1 .5) 16000㎏을 얻을 수 있다.3000 kg of aluminum hydroxide (Al (OH) 3 ) was added to the sodium hydroxide [Na 2 + Cl (OH)] and reacted at a temperature of 150 to 200 ° C. for 8 to 12 hours, followed by diluting 5,500 kg of water to give a basicity of 75%. and it is possible to obtain a poly aluminum chloride (Al 2 (OH) 4.5 Cl 1 .5) 16000㎏ containing aluminum oxide (Al 2 0 3) of 11%.

실시예-7Example-7

32%의 염산(HCl)6000㎏과 탄산나트륨(Na2C03)1750㎏을 혼합한 후, 생성된 탄산가스(CO2)를 제거하고 HCl+Na2C03→Na2+Cl(OH)+CO2↑의 반응에 의해 저 염기성(OH)의 수산염 나트륨〔Na2+Cl(OH)〕을 형성하도록 한다.After mixing 6000 kg of 32% hydrochloric acid (HCl) and 1750 kg of sodium carbonate (Na 2 CO 3 ), the produced carbon dioxide (CO 2 ) was removed and HCl + Na 2 CO 3 → Na 2 + Cl (OH) + The reaction of CO 2 ↑ forms low basic (OH) sodium hydroxide [Na 2 + Cl (OH)].

상기 수산염 나트륨〔Na2+Cl(OH)〕에 수산화 알루미늄(Al(OH)3 3000㎏을 투입하고 150~200℃의 온도로 8~12시간 동안 반응시킨 후 물5250㎏을 희석시켜 염기도 80%이고 11%의 산화알루미늄(Al203)을 함유하는 폴리염화알루미늄(Al2(OH)4.8Cl1 .2) 16000㎏ 을 얻을 수 있다.3000 kg of aluminum hydroxide (Al (OH) 3 ) was added to the sodium hydroxide [Na 2 + Cl (OH)] and reacted at a temperature of 150 to 200 ° C. for 8 to 12 hours, followed by dilution of 5250 kg of water to give a basicity of 80%. and it is possible to obtain a poly aluminum chloride (Al 2 (OH) 4.8 Cl 1 .2) 16000㎏ containing aluminum oxide (Al 2 0 3) of 11%.

실시예-8Example-8

32%의 염산(HCl)6000㎏과 탄산나트륨(Na2C03)250㎏을 혼합한 후, 생성된 탄산가스(CO2)를 제거하고 HCl+Na2C03→Na2+Cl(OH)+CO2↑의 반응에 의해 저 염기성(OH)의 수산염 나트륨〔Na2+Cl(OH)〕을 형성하도록 한다.After mixing 6000 kg of 32% hydrochloric acid (HCl) and 250 kg of sodium carbonate (Na 2 CO 3 ), the produced carbon dioxide (CO 2 ) is removed and HCl + Na 2 CO 3 → Na 2 + Cl (OH) + The reaction of CO 2 ↑ forms low basic (OH) sodium hydroxide [Na 2 + Cl (OH)].

상기 수산염 나트륨〔Na2+Cl(OH)〕에 수산화 알루미늄(Al(OH)3 3000㎏을 투입하고 150~200℃의 온도로 8~12시간 동안 반응시킨 후 물1150㎏을 희석시켜 염기도 50%이고 17%의 산화알루미늄(Al203)을 함유하는 폴리염화알루미늄(Al2(OH)3Cl3) 10400㎏을 얻을 수 있다.3000 kg of aluminum hydroxide (Al (OH) 3 ) was added to the sodium hydroxide [Na 2 + Cl (OH)] and reacted at a temperature of 150 to 200 ° C. for 8 to 12 hours, followed by dilution of water 1150 kg to 50% basicity. And 10400 kg of polyaluminum chloride (Al 2 (OH) 3 Cl 3 ) containing 17% of aluminum oxide (Al 2 O 3 ).

실시예-9Example-9

32%의 염산(HCl)6000㎏과 탄산나트륨(Na2C03)500㎏을 혼합한 후, 생성된 탄산가스(CO2)를 제거하고 HCl+Na2C03→Na2+Cl(OH)+CO2↑의 반응에 의해 저 염기성(OH)의 수산염 나트륨〔Na2+Cl(OH)〕을 형성하도록 한다.After mixing 6000 kg of 32% hydrochloric acid (HCl) and 500 kg of sodium carbonate (Na 2 CO 3 ), the produced carbon dioxide (CO 2 ) is removed and HCl + Na 2 CO 3 → Na 2 + Cl (OH) + The reaction of CO 2 ↑ forms low basic (OH) sodium hydroxide [Na 2 + Cl (OH)].

상기 수산염 나트륨〔Na2+Cl(OH)〕에 수산화 알루미늄(Al(OH)3 3000㎏을 투입하고 150~200℃의 온도로 8~12시간 동안 반응시킨 후 물900㎏을 희석시켜 염기도 55%이고 17%의 산화알루미늄(Al203)을 함유하는 폴리염화알루미늄(Al2(OH)3.3Cl2 .7) 10400㎏을 얻을 수 있다.3000 kg of aluminum hydroxide (Al (OH) 3 ) was added to the sodium hydroxide [Na 2 + Cl (OH)] and reacted at a temperature of 150 to 200 ° C. for 8 to 12 hours, followed by dilution of 900 kg of water to give a basicity of 55%. and it is possible to obtain a polyaluminum chloride containing 17% of aluminum oxide (Al 2 0 3) (Al 2 (OH) 3.3 Cl 2 .7) 10400㎏.

실시예-10Example-10

32%의 염산(HCl)6000㎏과 탄산나트륨(Na2C03)750㎏을 혼합한 후, 생성된 탄산가스(CO2)를 제거하고 HCl+Na2C03→Na2+Cl(OH)+CO2↑의 반응에 의해 저 염기성(OH)의 수산염 나트륨〔Na2+Cl(OH)〕을 형성하도록 한다.After mixing 6000 kg of 32% hydrochloric acid (HCl) and 750 kg of sodium carbonate (Na 2 CO 3 ), the produced carbon dioxide (CO 2 ) is removed and HCl + Na 2 CO 3 → Na 2 + Cl (OH) + The reaction of CO 2 ↑ forms low basic (OH) sodium hydroxide [Na 2 + Cl (OH)].

상기 수산염 나트륨〔Na2+Cl(OH)〕에 수산화 알루미늄(Al(OH)3 3000㎏을 투입하고 150~200℃의 온도로 8~12시간 동안 반응시킨 후 물650㎏을 희석시켜 염기도 60%이고 17%의 산화알루미늄(Al203)을 함유하는 폴리염화알루미늄(Al2(OH)3.6Cl2 .4) 10400㎏을 얻을 수 있다.3000 kg of aluminum hydroxide (Al (OH) 3 ) was added to the sodium hydroxide [Na 2 + Cl (OH)] and reacted at a temperature of 150 to 200 ° C. for 8 to 12 hours, followed by dilution of water 650 kg to 60% basicity. and it is possible to obtain a poly aluminum chloride containing aluminum oxide (Al 2 0 3) of 17% (Al 2 (OH) 3.6 Cl 2 .4) 10400㎏.

실시예-11Example-11

32%의 염산(HCl)6000㎏과 탄산나트륨(Na2C03)1000㎏을 혼합한 후, 생성된 탄산가스(CO2)를 제거하고 HCl+Na2C03→Na2+Cl(OH)+CO2↑의 반응에 의해 저 염기성(OH)의 수산염 나트륨〔Na2+Cl(OH)〕을 형성하도록 한다.After mixing 6000 kg of 32% hydrochloric acid (HCl) and 1000 kg of sodium carbonate (Na 2 CO 3 ), the produced carbon dioxide (CO 2 ) is removed and HCl + Na 2 CO 3 → Na 2 + Cl (OH) + The reaction of CO 2 ↑ forms low basic (OH) sodium hydroxide [Na 2 + Cl (OH)].

상기 수산염 나트륨〔Na2+Cl(OH)〕에 수산화 알루미늄(Al(OH)3 3000㎏을 투입하고 150~200℃의 온도로 8~12시간 동안 반응시킨 후 물400㎏을 희석시켜 염기도 65%이고 17%의 산화알루미늄(Al203)을 함유하는 폴리염화알루미늄(Al2(OH)3.9Cl2 .1) 10400㎏을 얻을 수 있다.3000 kg of aluminum hydroxide (Al (OH) 3 ) was added to the sodium hydroxide [Na 2 + Cl (OH)] and reacted at a temperature of 150 to 200 ° C. for 8 to 12 hours, followed by dilution of 400 kg of water and a basicity of 65%. and it is possible to obtain a poly aluminum chloride (Al 2 (OH) 3.9 Cl 2 .1) 10400㎏ containing aluminum oxide (Al 2 0 3) 17%.

실시예-12Example-12

32%의 염산(HCl)6000㎏과 탄산나트륨(Na2C03)1250㎏을 혼합한 후, 생성된 탄산가스(CO2)를 제거하고 HCl+Na2C03→Na2+Cl(OH)+CO2↑의 반응에 의해 저 염기성(OH)의 수산염 나트륨〔Na2+Cl(OH)〕을 형성하도록 한다.After mixing 6000 kg of 32% hydrochloric acid (HCl) and 1250 kg of sodium carbonate (Na 2 CO 3 ), the produced carbon dioxide (CO 2 ) is removed and HCl + Na 2 CO 3 → Na 2 + Cl (OH) + The reaction of CO 2 ↑ forms low basic (OH) sodium hydroxide [Na 2 + Cl (OH)].

상기 수산염 나트륨〔Na2+Cl(OH)〕에 수산화 알루미늄(Al(OH)3 3000㎏을 투입하고 150~200℃의 온도로 8~12시간 동안 반응시킨 후 물150㎏을 희석시켜 염기도 70%이고 17%의 산화알루미늄(Al203)을 함유하는 폴리염화알루미늄(Al2(OH)3.6Cl2 .4) 10400㎏을 얻을 수 있다.3000 kg of aluminum hydroxide (Al (OH) 3 ) was added to the sodium hydroxide [Na 2 + Cl (OH)] and reacted at a temperature of 150 to 200 ° C. for 8 to 12 hours, followed by dilution of 150 kg of water to give a basicity of 70%. and it is possible to obtain a poly aluminum chloride containing aluminum oxide (Al 2 0 3) of 17% (Al 2 (OH) 3.6 Cl 2 .4) 10400㎏.

상기와 같이 본 발명에 의한 고염기도 폴리염화알루미늄은 염산(HCl)과 탄산나트륨(Na2C03)을 혼합(HCl+Na2C03→Na2+Cl(OH)+CO2↑)한 후, 생성된 탄산가스(CO2)를 제거하고 HCl+Na2C03→Na2+Cl(OH)+CO2↑의 구조식에 의해 저 염기성(OH)의 수산염 나트륨〔Na2+Cl(OH)〕에 수산화 알루미늄(Al(OH)3 을 투입하고 150~200℃의 온도로 8~12시간 동안 반응시킨 후 고염기도 폴리염화알루미늄을 얻을 수 있기 때문에 종래의 폴리염화알루미늄 보다 탁도 15~20%의 약품투입율 감소와 고탁도, 저알카리도의 수질에 소석회를 투입하지않고 우수한 탁도 제거를 얻을 수 있는 효과가 있다.The polybasic aluminum chloride according to the present invention as described above is mixed with hydrochloric acid (HCl) and sodium carbonate (Na 2 CO 3 ) (HCl + Na 2 CO 3 → Na 2 + Cl (OH) + CO 2 ↑), The produced carbon dioxide (CO 2 ) was removed and the sodium hydroxide of low basicity (OH) [Na 2 + Cl (OH)] was determined by the structural formula HCl + Na 2 CO 3 → Na 2 + Cl (OH) + CO 2 ↑. After adding aluminum hydroxide (Al (OH) 3 ) to the reaction at a temperature of 150 to 200 ° C. for 8 to 12 hours, a high basic degree of polyaluminum chloride can be obtained. There is an effect that can reduce the input rate, high turbidity, low alkalinity of the water without the addition of hydrated lime to remove the excellent turbidity.

Claims (3)

함유량 32%의 염산(HCl)과 탄산나트륨(Na2C03)이 혼합(HCl+Na2C03→Na2+Cl(OH)+CO2↑)되어 형성된 수산염나트륨〔Na2+Cl(OH)〕에 수산화 알루미늄(Al(OH)3)이 혼합되고 150~200℃의 온도로 8~12시간 동안 반응시켜 폴리염화알루미늄이 형성되는 것을 특징으로 하는 고염기도 폴리염화알루미늄 제조방법.Sodium hydroxide [Na 2 + Cl (OH) formed by mixing 32% of hydrochloric acid (HCl) with sodium carbonate (Na 2 CO 3 ) (HCl + Na 2 CO 3 → Na 2 + Cl (OH) + CO 2 ↑) And aluminum hydroxide (Al (OH) 3 ) is mixed and reacted at a temperature of 150-200 ° C. for 8 to 12 hours to form polyaluminum chloride. 제1항에 있어서, 폴리염화알루미늄은 염산 6000 중량부와 탄산나트륨 250~1250 중량부의 혼합물에 수산화알루미늄 3000 중량부와 물 5750~6750 중량부가 혼합되어 11%의 산화알루미늄을 함유하고 염기도 50~80%로 구성된 16000중량부의 폴리염화알루미늄으로 구성되는 것을 특징으로 하는 고염기도 폴리염화알루미늄 제조방법.The polyaluminum chloride according to claim 1, wherein 3000 parts by weight of aluminum hydroxide and 5750 parts by weight of water are mixed in a mixture of 6000 parts by weight of hydrochloric acid and 250 parts by weight to 1250 parts by weight of sodium carbonate, containing 11% of aluminum oxide and having a basicity of 50% to 80%. Method for producing a high polybasic aluminum chloride, characterized in that consisting of 16000 parts by weight of poly aluminum chloride. 제1항에 있어서, 폴리염화알루미늄은 염산 6000 중량부와 탄산나트륨 250~1250 중량부의 혼합물에 수산화알루미늄 3000 중량부와 물 150~1150 중량부가 혼합되어 17%의 산화알루미늄을 함유하고 염기도 50~70%로 구성된 10400 중량부의 폴리염화알루미늄으로 구성되는 것을 특징으로 하는 고염기도 폴리염화알루미늄 제조방법.According to claim 1, Polyaluminum chloride is mixed with 6,000 parts by weight of hydrochloric acid and 250 to 1250 parts by weight of sodium carbonate 3000 parts by weight of aluminum hydroxide and 150 to 1150 parts by weight of water containing 17% of aluminum oxide and 50-70% basicity Method of producing a polybasic aluminum chloride, characterized in that consisting of 10400 parts by weight of poly aluminum chloride.
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CN102372299A (en) * 2010-08-08 2012-03-14 嘉善绿野环保材料厂 Preparation method of poly aluminum chloride in high purity
KR101216181B1 (en) * 2012-01-18 2012-12-28 주식회사 퓨어엔비텍 Coagulant composition for removing phosphorus suitable for mbr process and water treatment method using thereof
KR20150115291A (en) 2014-04-02 2015-10-14 (주)코솔텍 Preparation process of high basic polyaluminium chloride coagulants
KR101772520B1 (en) 2017-01-02 2017-08-30 (주)코솔텍 Polyaluminium chloride coagulants having neutral basicity and manufacturing method thereof
KR101938467B1 (en) 2017-01-04 2019-01-14 이용원 Polyaluminium chloride coagulants having neutral basicity and manufacturing method thereof
KR20200059333A (en) 2018-11-20 2020-05-29 주식회사 삼주 Polyaluminium chloride having high efficiency of cohesion and the manufacturing method thereof
CN111484058A (en) * 2020-03-29 2020-08-04 中国铝业股份有限公司 Method for co-producing low-sodium high-temperature alumina by using polyaluminium chloride
KR20200142295A (en) 2019-06-12 2020-12-22 한국건설기술연구원 Method for preparing high basicity aluminum chlorohydrate with high aluminum content
KR20200142294A (en) 2019-06-12 2020-12-22 한국건설기술연구원 Method for preparing high basicity aluminum chlorohydrate

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KR890000372B1 (en) * 1986-05-10 1989-03-15 이영화성공업 주식회사 Preparation for poly aluminium chloride

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102372299A (en) * 2010-08-08 2012-03-14 嘉善绿野环保材料厂 Preparation method of poly aluminum chloride in high purity
KR101216181B1 (en) * 2012-01-18 2012-12-28 주식회사 퓨어엔비텍 Coagulant composition for removing phosphorus suitable for mbr process and water treatment method using thereof
KR20150115291A (en) 2014-04-02 2015-10-14 (주)코솔텍 Preparation process of high basic polyaluminium chloride coagulants
KR101772520B1 (en) 2017-01-02 2017-08-30 (주)코솔텍 Polyaluminium chloride coagulants having neutral basicity and manufacturing method thereof
KR101938467B1 (en) 2017-01-04 2019-01-14 이용원 Polyaluminium chloride coagulants having neutral basicity and manufacturing method thereof
KR20200059333A (en) 2018-11-20 2020-05-29 주식회사 삼주 Polyaluminium chloride having high efficiency of cohesion and the manufacturing method thereof
KR20200142295A (en) 2019-06-12 2020-12-22 한국건설기술연구원 Method for preparing high basicity aluminum chlorohydrate with high aluminum content
KR20200142294A (en) 2019-06-12 2020-12-22 한국건설기술연구원 Method for preparing high basicity aluminum chlorohydrate
CN111484058A (en) * 2020-03-29 2020-08-04 中国铝业股份有限公司 Method for co-producing low-sodium high-temperature alumina by using polyaluminium chloride
CN111484058B (en) * 2020-03-29 2022-04-26 中国铝业股份有限公司 Method for co-producing low-sodium high-temperature alumina by using polyaluminium chloride

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