CN101823744B - Method for producing light calcium carbonate, ammonium chloride and carbon powder by using combined alkali waste liquid and carbide slag - Google Patents
Method for producing light calcium carbonate, ammonium chloride and carbon powder by using combined alkali waste liquid and carbide slag Download PDFInfo
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- CN101823744B CN101823744B CN2010101694971A CN201010169497A CN101823744B CN 101823744 B CN101823744 B CN 101823744B CN 2010101694971 A CN2010101694971 A CN 2010101694971A CN 201010169497 A CN201010169497 A CN 201010169497A CN 101823744 B CN101823744 B CN 101823744B
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- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 title claims abstract description 108
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 title claims abstract description 75
- 235000019270 ammonium chloride Nutrition 0.000 title claims abstract description 53
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 229910000019 calcium carbonate Inorganic materials 0.000 title claims abstract description 38
- 239000002893 slag Substances 0.000 title claims abstract description 36
- 239000002699 waste material Substances 0.000 title claims abstract description 28
- 239000003513 alkali Substances 0.000 title claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 239000007788 liquid Substances 0.000 title abstract description 25
- 239000012065 filter cake Substances 0.000 claims abstract description 28
- 239000000047 product Substances 0.000 claims abstract description 21
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000003763 carbonization Methods 0.000 claims abstract description 18
- 239000000243 solution Substances 0.000 claims abstract description 14
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims abstract description 12
- 239000001110 calcium chloride Substances 0.000 claims abstract description 12
- 229910001628 calcium chloride Inorganic materials 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 12
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 11
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 11
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 11
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 10
- 239000011259 mixed solution Substances 0.000 claims abstract description 10
- 235000011114 ammonium hydroxide Nutrition 0.000 claims abstract description 9
- 239000003738 black carbon Substances 0.000 claims abstract description 9
- 239000000126 substance Substances 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims abstract description 7
- 238000005406 washing Methods 0.000 claims abstract description 7
- 238000005260 corrosion Methods 0.000 claims abstract description 6
- 230000007797 corrosion Effects 0.000 claims abstract description 5
- 239000013078 crystal Substances 0.000 claims abstract description 5
- 238000001914 filtration Methods 0.000 claims abstract 3
- 229910052799 carbon Inorganic materials 0.000 claims description 17
- 238000006243 chemical reaction Methods 0.000 claims description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 8
- 239000000706 filtrate Substances 0.000 claims description 8
- 238000005660 chlorination reaction Methods 0.000 claims description 6
- 238000000967 suction filtration Methods 0.000 claims description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 2
- 239000000428 dust Substances 0.000 claims 6
- 208000004434 Calcinosis Diseases 0.000 claims 2
- FYHXNYLLNIKZMR-UHFFFAOYSA-N calcium;carbonic acid Chemical compound [Ca].OC(O)=O FYHXNYLLNIKZMR-UHFFFAOYSA-N 0.000 claims 2
- 238000005255 carburizing Methods 0.000 claims 2
- 239000003153 chemical reaction reagent Substances 0.000 claims 2
- 230000018044 dehydration Effects 0.000 claims 2
- 238000006297 dehydration reaction Methods 0.000 claims 2
- 238000004821 distillation Methods 0.000 claims 2
- 235000011089 carbon dioxide Nutrition 0.000 claims 1
- 238000010298 pulverizing process Methods 0.000 claims 1
- 239000001569 carbon dioxide Substances 0.000 abstract description 9
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 abstract description 3
- 239000005997 Calcium carbide Substances 0.000 description 19
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 description 19
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 8
- 239000007789 gas Substances 0.000 description 6
- 239000011575 calcium Substances 0.000 description 5
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 4
- 229910052791 calcium Inorganic materials 0.000 description 4
- 229910000029 sodium carbonate Inorganic materials 0.000 description 4
- 235000017550 sodium carbonate Nutrition 0.000 description 4
- 239000000460 chlorine Substances 0.000 description 3
- 239000002440 industrial waste Substances 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000005292 vacuum distillation Methods 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- JGIATAMCQXIDNZ-UHFFFAOYSA-N calcium sulfide Chemical compound [Ca]=S JGIATAMCQXIDNZ-UHFFFAOYSA-N 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 description 1
- 239000004568 cement Chemical class 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000618 nitrogen fertilizer Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Processing Of Solid Wastes (AREA)
Abstract
本发明公开了用联碱废液和电石渣生产轻质碳酸钙、氯化铵和碳粉的方法，将电石渣与联碱废液按照氢氧化钙与氯化铵的纯物质质量比为1∶1.08～1.45投入耐腐蚀反应器中反应，生成氯化钙和氨水的混合液；将所得的混合液经抽滤，离心，得到黑色碳滤饼和澄清的液体；将澄清的液体投入碳化塔中，与二氧化碳气体进行碳化反应，生成碳酸钙和氯化铵混合物，混合物再经抽滤、离心，得到碳酸钙滤饼和氯化铵溶液；碳酸钙滤饼依次经洗涤脱水，干燥，粉碎，得到碳酸钙产品；所述氯化铵溶液经减压蒸馏得到氯化铵晶体产品。
The invention discloses a method for producing light calcium carbonate, ammonium chloride and carbon powder by using alkali waste liquid and carbide slag. The method comprises the following steps: charging carbide slag and alkali waste liquid into a corrosion-resistant reactor according to a pure substance mass ratio of calcium hydroxide to ammonium chloride of 1:1.08-1.45 to react and generate a mixed solution of calcium chloride and ammonia water; filtering the obtained mixed solution by suction and centrifuging to obtain a black carbon filter cake and a clarified liquid; charging the clarified liquid into a carbonization tower to react with carbon dioxide gas to generate a mixture of calcium carbonate and ammonium chloride, and filtering the mixture by suction and centrifuging to obtain a calcium carbonate filter cake and an ammonium chloride solution; washing, dehydrating, drying and crushing the calcium carbonate filter cake in sequence to obtain a calcium carbonate product; and distilling the ammonium chloride solution under reduced pressure to obtain an ammonium chloride crystal product.
Description
技术领域 technical field
本发明涉及工业三废综合利用和处理领域，具体地，涉及用联碱废液和电石渣生产轻质碳酸钙、氯化铵和碳粉的方法。The invention relates to the field of comprehensive utilization and treatment of three industrial wastes, in particular to a method for producing light calcium carbonate, ammonium chloride and carbon powder by using combined alkali waste liquid and carbide slag.
背景技术 Background technique
联合制纯碱法(简称联碱法)是生产纯碱的主要方法，伴随着纯碱的产生，也产生含大量氯化铵的废液。氯化铵废液纯化后可用于生产氮肥。The combined soda ash method (abbreviated as combined soda ash method) is the main method for producing soda ash. Along with the production of soda ash, waste liquid containing a large amount of ammonium chloride is also produced. Ammonium chloride waste liquid can be used to produce nitrogen fertilizer after purification.
电石渣是电石水解生产乙炔所产生的残余物，是含固量在8％-10％的乳液，又名电石泥，其主要化学成分是氢氧化钙，还含有硅酸钙、铝酸钙、硅铁及炭渣等固体杂质以及硫化钙、氢氧化钙、乙炔等水溶液，是一种呈强碱性，富含丰富的钙资源，以其为原料可生产碳酸钙、水泥等一系列需要钙质为原料的产品。但由于其中所含杂质较多、含水量高、成份复杂、未经处理的电石渣无法直接利用。另一方面，随着电石行业的蓬勃发展，电石渣的排放量也日益增加，年生产20万吨PVC的生产厂排放电石泥浆达360万吨/年，大量的电石渣无法有效利用，直接堆积将严重污染农田和地下水，造成土地人为碱化，对生态环境造成难以恢复的污染。Calcium carbide slag is the residue produced by the hydrolysis of calcium carbide to produce acetylene. It is an emulsion with a solid content of 8%-10%, also known as calcium carbide mud. Its main chemical composition is calcium hydroxide, and it also contains calcium silicate, calcium aluminate, Solid impurities such as ferrosilicon and carbon slag, as well as aqueous solutions such as calcium sulfide, calcium hydroxide, and acetylene, are strongly alkaline and rich in calcium resources. They can be used as raw materials to produce a series of calcium carbonate, cement, etc. that require calcium. quality as raw material products. However, due to the large amount of impurities, high water content, and complex components, the untreated carbide slag cannot be used directly. On the other hand, with the vigorous development of the calcium carbide industry, the discharge of calcium carbide slag is also increasing day by day. A production plant with an annual production of 200,000 tons of PVC discharges 3.6 million tons of calcium carbide mud per year. A large amount of calcium carbide slag cannot be effectively used and is directly accumulated. It will seriously pollute farmland and groundwater, cause artificial alkalization of land, and cause unrecoverable pollution to the ecological environment.
为此，有必要进一步开发利用电石渣，使其中的有效成分转化位可以利用的工业产品。For this reason, it is necessary to further develop and utilize calcium carbide slag, so that the active ingredients in it can be transformed into industrial products that can be utilized.
发明内容 Contents of the invention
为此，本发明提供了一种用联碱废液和电石渣生产轻质碳酸钙、氯化铵和碳粉的方法，有效的消耗了工业废品氯化铵废液和电石渣，挖掘了氯化铵废液和电石渣的价值，并解决了因二者而造成的环境污染问题。For this reason, the present invention provides a kind of method of producing light calcium carbonate, ammonium chloride and carbon powder with combined alkali waste liquid and carbide slag, effectively consumed industrial waste product ammonium chloride waste liquid and calcium carbide slag, excavated chlorine Value of ammonium chloride waste liquid and carbide slag, and solve the problem of environmental pollution caused by the two.
本发明的技术方案为：用联碱废液和电石渣生产轻质碳酸钙、氯化铵和碳粉的方法，包括如下步骤：The technical scheme of the present invention is: the method for producing light calcium carbonate, ammonium chloride and carbon powder with combined alkali waste liquid and carbide slag, comprises the steps:
A：分别折算联碱法产生的氯化铵废液中的氯化铵的质量含量和电石渣中的氢氧化钙的质量含量；A: respectively convert the mass content of ammonium chloride in the ammonium chloride waste liquid produced by the combined alkali process and the mass content of calcium hydroxide in the carbide slag;
B：将电石渣与联碱废液按照氢氧化钙与氯化铵的纯物质质量比为1∶1.08～1.45投入耐腐蚀反应器(1)中，进行反应，得到含氯化钙和氨水的混合液；B: Carbide slag and combined alkali waste liquid are put into the corrosion-resistant reactor (1) according to the pure substance mass ratio of calcium hydroxide and ammonium chloride of 1: 1.08～1.45, and react to obtain calcium chloride and ammonia water mixed solution;
C：将包步骤B所得的含氯化钙和氨水的混合液经第一抽滤泵(2)抽滤，第一离心机(3)离心，得到黑色碳滤饼和澄清的滤液；C: the mixed solution containing calcium chloride and ammonia water obtained in the bag step B is suction filtered by the first suction filter pump (2), and the first centrifuge (3) is centrifuged to obtain a black carbon filter cake and a clarified filtrate;
D：将步骤C所得的澄清的滤液投入碳化塔(4)中，按照氯化钙与二氧化碳的纯物质质量之比为1∶1～4通入二氧化碳气体进行碳化反应，得到含碳酸钙沉淀和氯化铵的混合物；D: the clarified filtrate of step C gained is dropped in the carbonization tower (4), is that 1: 1～4 is passed into carbon dioxide gas and carries out carbonization reaction according to the ratio of the pure matter mass of calcium chloride and carbon dioxide, obtains calcium carbonate-containing precipitate and Ammonium chloride mixture;
E：将步骤D所得的含碳酸钙沉淀和氯化铵的混合物用第二抽滤泵(6)过滤及第二离心机(7)离心，得到碳酸钙滤饼和含氯化铵的溶液；E: the mixture containing calcium carbonate precipitate and ammonium chloride obtained in step D is filtered with a second suction filter pump (6) and centrifuged with a second centrifuge (7), to obtain a calcium carbonate filter cake and a solution containing ammonium chloride;
F：将步骤E所得的碳酸钙滤饼依次经洗涤离心机(8)洗涤脱水，干燥机(9)干燥，粉碎机(10)粉碎，包装得到碳酸钙产品(11)；F: the calcium carbonate filter cake obtained in step E is washed and dehydrated by a washing centrifuge (8) successively, dried by a drier (9), pulverized by a pulverizer (10), and packed to obtain a calcium carbonate product (11);
G：将步骤E所得的含氯化铵溶液经过减压蒸馏器(12)减压蒸馏，得到氯化铵晶体产品(13；G: the ammonium chloride solution obtained in step E is distilled under reduced pressure in a vacuum distiller (12) to obtain the ammonium chloride crystal product (13;
H：将步骤C所得的黑色的碳滤饼与过量盐酸于碳粉净化器(14)中反应，除去没有完全反应的电石渣，经第三抽滤泵(15)抽滤得到纯净的碳滤饼；H: react the black carbon filter cake obtained in step C with excess hydrochloric acid in a carbon powder purifier (14), remove incompletely reacted carbide slag, and obtain pure carbon filter through suction filtration by the third suction filter pump (15). cake;
I：将步骤H所得的纯净的碳滤饼再经脱水、在碳粉干燥箱(16)中干燥，碳粉粉碎机(17)中粉碎成为碳粉产品(18)。I: the pure carbon filter cake of step H gained is dehydrated, dried in a carbon powder drying box (16), and pulverized into a carbon powder product (18) in a carbon powder pulverizer (17).
步骤D中，用氯化表(5)控制碳化反应的碳化终点，当表上读数不动为零时即为碳化终点。In step D, control the carbonization end point of the carbonization reaction with the chlorination meter (5), and be the carbonization end point when the reading on the meter does not move to zero.
步骤D所述的二氧化碳气体为纯二氧化碳气体或二氧化碳体积含量大于20％的混合气体。The carbon dioxide gas described in step D is pure carbon dioxide gas or a mixed gas with a carbon dioxide volume content greater than 20%.
所述用联碱废液和电石渣生产轻质碳酸钙、氯化铵和碳粉的方法的反应原理为：The reaction principle of the method for producing light calcium carbonate, ammonium chloride and carbon powder with combined alkali waste liquid and carbide slag is:
其化学反应方程式为：2NH4Cl+Ca(OH)2＝＝＝＝CaCl2+2NH4OHIts chemical reaction equation is: 2NH 4 Cl+Ca(OH) 2 ====CaCl 2 +2NH 4 OH
CaCl2+2NH4OH+CO2＝＝＝CaCO3+2NH4Cl+H2OCaCl 2 +2NH 4 OH+CO 2 ===CaCO 3 +2NH 4 Cl+H 2 O
本发明所述的用联碱废液和电石渣生产轻质碳酸钙、氯化铵和碳粉的方法，有效的消耗了工业废品氯化铵废液和电石渣，挖掘了氯化铵废液和电石渣的价值，并解决了因二者而造成的环境污染问题，该方法操作简单，所需设备投资少，是一个低耗高效的方法。The method for producing light calcium carbonate, ammonium chloride and carbon powder with combined alkali waste liquid and calcium carbide slag of the present invention effectively consumes industrial waste product ammonium chloride waste liquid and calcium carbide slag, excavates ammonium chloride waste liquid and the value of calcium carbide slag, and solve the environmental pollution problem caused by the two. The method is simple to operate, requires less equipment investment, and is a low-consumption and high-efficiency method.
附图说明 Description of drawings
图1展示了本发明所述用联碱废液和电石渣生产轻质碳酸钙、氯化铵和碳粉的方法的工艺步骤，其中：Fig. 1 has shown the processing steps of the method for producing light calcium carbonate, ammonium chloride and carbon powder with combined alkali waste liquor and carbide slag of the present invention, wherein:
(1)——耐腐蚀反应器，(2)——第一抽滤泵，(3)——第一离心机，(1)—corrosion-resistant reactor, (2)—first suction filter pump, (3)——first centrifuge,
(4)——碳化塔，(5)——氯化表，(6)——第二抽滤泵，(4)——carbonization tower, (5)——chlorination meter, (6)——second suction filter pump,
(7)——第一离心机，(8)——洗涤离心机，(9)——干燥机，(7) - first centrifuge, (8) - washing centrifuge, (9) - dryer,
(10)——粉碎机，(11)——碳酸钙产品，(12)——减压蒸馏器，(10)——crusher, (11)——calcium carbonate product, (12)——vacuum distillation,
(13)——氯化铵晶体产品，(14)——碳粉净化器，(15)——第三抽滤泵，(13)——ammonium chloride crystal product, (14)——carbon powder purifier, (15)——the third suction filter pump,
(16)——碳粉干燥箱，(17)——碳粉粉碎机，(18)——碳粉产品。(16)——toner drying box, (17)——toner pulverizer, (18)——toner product.
具体实施方式 Detailed ways
以下结合具体实施例对本发明所述的用联碱废液和电石渣生产轻质碳酸钙、氯化铵和碳粉的方法做进一步描述和说明。Below in conjunction with specific embodiment, the method for producing light calcium carbonate, ammonium chloride and carbon powder with combined alkali waste liquid and carbide slag of the present invention is further described and illustrated.
实施例一Embodiment one
用联碱废液和电石渣生产轻质碳酸钙、氯化铵和碳粉的方法，先分别折算联碱法产生的氯化铵废液中的氯化铵质量含量和电石渣中的氢氧化钙质量含量；将含500kg氢氧化钙的电石渣与联碱废液按照氢氧化钙与氯化铵的纯物质质量比为1∶1.08投入耐腐蚀反应器(1)中，搅拌均匀，进行反应，得到含氯化钙和氨水的混合液；将所得的含氯化钙和氨水的混合液经第一抽滤泵(2)抽滤，第一离心机(3)离心，得到黑色碳滤饼和澄清的滤液；黑色的碳滤饼用于制备碳粉；澄清的滤液投入碳化塔(4)中，按照氯化钙与二氧化碳的纯物质质量之比为1∶1～4通入二氧化碳气体进行碳化反应，用氯化表(5)控制碳化反应的碳化终点，当表上读数不动为零时即为碳化终点，得到含碳酸钙沉淀和氯化铵混合物；将含碳酸钙沉淀和氯化铵混合物用第二抽滤泵(6)及第二离心机(7)离心，得到碳酸钙滤饼和含氯化铵的溶液；所得碳酸钙滤饼依次经洗涤离心机(8)洗涤脱水，干燥机(9)干燥，粉碎机(10)粉碎，包装得到含504.67kg碳酸钙的碳酸钙产品(11)；所述氯化铵溶液经过减压蒸馏器(12)减压蒸馏得到含540kg氯化铵的氯化铵晶体产品(13)。The method for producing light calcium carbonate, ammonium chloride and carbon powder with combined alkali waste liquid and calcium carbide slag first converts the ammonium chloride mass content in the ammonium chloride waste liquid produced by the combined alkali method and the hydrogen oxidation in the calcium carbide slag Calcium mass content; the calcium carbide slag containing 500kg of calcium hydroxide and the combined alkali waste liquid are put into the corrosion-resistant reactor (1) according to the pure substance mass ratio of calcium hydroxide and ammonium chloride of 1: 1.08, stirred evenly, and reacted , obtain the mixed solution containing calcium chloride and ammoniacal liquor; The mixed solution containing calcium chloride and ammoniacal liquor of gained is suction-filtered through the first suction filter pump (2), and the first centrifuge (3) is centrifugal, obtains black carbon filter cake and clarified filtrate; the black carbon filter cake is used to prepare carbon powder; the clarified filtrate is put into the carbonization tower (4), and according to the ratio of the pure substance quality of calcium chloride and carbon dioxide, it is 1: 1～4 to pass into carbon dioxide gas to carry out Carbonization reaction, control the carbonization end point of the carbonization reaction with the chlorination table (5), when the reading on the table does not move to zero, it is the carbonization end point, and obtain the mixture containing calcium carbonate precipitation and ammonium chloride; The ammonium mixture is centrifugal with the second suction filter pump (6) and the second centrifuge (7), obtains the solution of calcium carbonate filter cake and ammonium chloride; Gained calcium carbonate filter cake is washed and dehydrated through washing centrifuge (8) successively, Drier (9) is dry, pulverizer (10) pulverizes, and packing obtains the calcium carbonate product (11) that contains 504.67kg calcium carbonate; ammonium chloride crystalline product of ammonium chloride (13).
所述黑色的碳滤饼与过量盐酸于碳粉净化器(14)中过量反应，除去没有完全反应的电石渣，经第三抽滤泵(15)抽滤，得到纯净的碳滤饼；所述纯净的碳滤饼再经脱水、在碳粉干燥箱(16)中干燥，碳粉粉碎机(17)中粉碎成为碳粉产品(18)。Described black carbon filter cake and excess hydrochloric acid are excessively reacted in the carbon powder purifier (14), removes the carbide slag that does not react completely, and through the third suction filtration pump (15) suction filtration, obtains pure carbon filter cake; The pure carbon filter cake is dehydrated, dried in a carbon powder drying box (16), and pulverized into a carbon powder product (18) in a carbon powder pulverizer (17).
实施例二Embodiment two
用联碱废液和电石渣生产轻质碳酸钙、氯化铵和碳粉的方法，先分别折算联碱法产生的氯化铵废液中的氯化铵质量含量和电石渣中的氢氧化钙质量含量；将含500kg氢氧化钙的电石渣与联碱废液按照氢氧化钙与氯化铵的纯物质质量比为1∶1.45投入耐腐蚀反应器(1)中，搅拌均匀，进行反应，得到含氯化钙和氨水的混合液；将所得的含氯化钙和氨水的混合液经第一抽滤泵(2)抽滤，第一离心机(3)离心，得到黑色碳滤饼和澄清的滤液；黑色的碳滤饼用于制备碳粉；澄清的滤液投入碳化塔(4)中，通入二氧化碳气体进行碳化反应，用氯化表(5)控制碳化反应的碳化终点，当表上读数不动为零时即为碳化终点；得到含碳酸钙沉淀和氯化铵的混合物；将含碳酸钙沉淀和氯化铵混合物用第二抽滤泵(6)过滤及第二离心机(7)离心，得到碳酸钙滤饼和含氯化铵的溶液；所得碳酸钙滤饼依次经洗涤机(8)洗涤脱水，干燥机(9)干燥，粉碎机(10)粉碎，包装得到含677.57kg碳酸钙的碳酸钙产品(11)；所述含氯化铵溶液经过减压蒸馏器(12)减压蒸馏得到含725kg氯化铵的氯化铵晶体产品(13)。The method for producing light calcium carbonate, ammonium chloride and carbon powder with combined alkali waste liquid and calcium carbide slag first converts the ammonium chloride mass content in the ammonium chloride waste liquid produced by the combined alkali method and the hydrogen oxidation in the calcium carbide slag Calcium mass content: put calcium carbide slag containing 500kg of calcium hydroxide and combined alkali waste liquid into the corrosion-resistant reactor (1) according to the pure substance mass ratio of calcium hydroxide and ammonium chloride as 1: 1.45, stir evenly, and react , obtain the mixed solution that contains calcium chloride and ammoniacal liquor; The mixed solution that contains calcium chloride and ammoniacal liquor of gained is suction-filtered through the first suction filter pump (2), and the first centrifuge (3) is centrifugal, obtains black carbon filter cake and clarified filtrate; black carbon filter cake is used to prepare carbon powder; clarified filtrate is put into carbonization tower (4), passes into carbon dioxide gas and carries out carbonization reaction, controls the carbonization end point of carbonization reaction with chlorination table (5), when When the reading on the table does not move and is zero, it is the carbonization end point; obtain the mixture containing calcium carbonate precipitation and ammonium chloride; filter the calcium carbonate precipitation and ammonium chloride mixture with the second suction filter pump (6) and the second centrifuge (7) Centrifuge to obtain a calcium carbonate filter cake and a solution containing ammonium chloride; the gained calcium carbonate filter cake is washed and dehydrated by a washing machine (8) successively, dried by a drier (9), pulverized by a pulverizer (10), and packaged to obtain a solution containing Calcium carbonate product (11) of 677.57kg calcium carbonate; Described ammonium chloride-containing solution obtains the ammonium chloride crystal product (13) containing 725kg ammonium chloride through decompression distiller (12) vacuum distillation.
所述碳滤饼与过量盐酸于碳粉净化器(14)中过量反应，除去没有完全反应的电石渣，经第三抽滤泵(15)抽滤，得到纯净的碳滤饼；所述纯净的碳滤饼再经脱水、在碳粉干燥箱(16)中干燥，碳粉粉碎机(17)中粉碎成为碳粉产品(18)。Described carbon filter cake and excess hydrochloric acid are excessively reacted in carbon powder purifier (14), removes the calcium carbide slag that does not react completely, and through the third suction filter pump (15) suction filtration, obtains pure carbon filter cake; The carbon filter cake is dehydrated, dried in a carbon powder drying box (16), and pulverized into a carbon powder product (18) in a carbon powder pulverizer (17).
上述实施例，只是本发明的较佳实施例，并非用来限制本发明实施范围，故凡以本发明权利要求所述的特征及原理所做的等效变化或修饰，均应包括在本发明权利要求范围之内。The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Therefore, all equivalent changes or modifications made with the features and principles described in the claims of the present invention should be included in the present invention. within the scope of the claims.
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| US9902652B2 (en) | 2014-04-23 | 2018-02-27 | Calera Corporation | Methods and systems for utilizing carbide lime or slag |
| US11377363B2 (en) | 2020-06-30 | 2022-07-05 | Arelac, Inc. | Methods and systems for forming vaterite from calcined limestone using electric kiln |
| US11577965B2 (en) | 2020-02-25 | 2023-02-14 | Arelac, Inc. | Methods and systems for treatment of lime to form vaterite |
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| CN1796284A (en) * | 2004-12-20 | 2006-07-05 | 王嘉兴 | Method for fabricting Nano active calcium carbonate as well as carbon powder from carbide slag |
| CN101580259A (en) * | 2009-04-08 | 2009-11-18 | 王嘉兴 | Method for preparing nano active calcium carbonate series products by ammonium carbonization method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US9902652B2 (en) | 2014-04-23 | 2018-02-27 | Calera Corporation | Methods and systems for utilizing carbide lime or slag |
| US11577965B2 (en) | 2020-02-25 | 2023-02-14 | Arelac, Inc. | Methods and systems for treatment of lime to form vaterite |
| US12077447B2 (en) | 2020-02-25 | 2024-09-03 | Arelac, Inc. | Methods and systems for treatment of lime to form vaterite |
| US12172904B2 (en) | 2020-02-25 | 2024-12-24 | Arelac, Inc. | Methods and systems for treatment of lime to form vaterite |
| US11377363B2 (en) | 2020-06-30 | 2022-07-05 | Arelac, Inc. | Methods and systems for forming vaterite from calcined limestone using electric kiln |
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