CS254662B1 - Process for the regeneration of hydrogen chloride in the chlorination of magnesite raw materials - Google Patents
Process for the regeneration of hydrogen chloride in the chlorination of magnesite raw materials Download PDFInfo
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- CS254662B1 CS254662B1 CS851182A CS118285A CS254662B1 CS 254662 B1 CS254662 B1 CS 254662B1 CS 851182 A CS851182 A CS 851182A CS 118285 A CS118285 A CS 118285A CS 254662 B1 CS254662 B1 CS 254662B1
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- hydrogen chloride
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Abstract
Účelom riešenia je regenerácia chlorovodíka pri chlorácii magnezitových surovin. Uvedeného účelu sa dosiahne chemickou reakciou výstupnej atmosféry z chloračné- ho reaktora na odželezenie magnezitových surovin s kalcinovanou magnezitovou surovinou pri teplote 150 až 200 °C, za vzniku pevného produktu s obsahom chloridových iónov, ktorý sa vracia do chloračného reaktora.The purpose of the solution is to regenerate hydrogen chloride in the chlorination of magnesite raw materials. This purpose is achieved by the chemical reaction of the outlet atmosphere from the chlorination reactor to the decomposition of magnesite feedstocks with calcined magnesite feedstock at a temperature of 150 to 200 ° C to produce a solid chloride ion product which is returned to the chlorination reactor.
Description
Vynález sa týká chlorácie magnezitových surovin, u ktorého sa rieši regenerácia chlorovodíka.The invention relates to the chlorination of magnesite raw materials in which the regeneration of hydrogen chloride is solved.
Jedným zo sposobov. odželezenia magnezitových surovin je ich chlorácia prídavkom pevného chloridu horečnatého, ktorého rozkladom v mierne redukčnej atmosféře vzniká plynný chlorovodík. Pri teplotách nad 900 °C plynný chlorovodík reaguje so železom v magnezitovej surovině za vzniku prchavých chloridov železa. Priemerné zloženie výstupnej atmosféry z chloračného reaktora je: 2 obj. % HC1, 18 obj. % H2O, 20 objemových % CO2 a 60 obj. % N2. Likvidácia tejto atmosféry sa v. súčasnosti spofahlivo realizuje mokrou cestou, a to sprchováním vodou a z technologického hladiska zložitou, ekonomicky a energeticky náročnou úpravou vzniklých roztokov sa po zahuštění získá hexahydrát chloridu horečnatého a jeho následným sušením monohydrát chloridu horečnatého, ktorý sa repetuje do chloračného reaktora a plní funkciu chloračnatého. činidla.One way. The iron is extracted from iron by the addition of solid magnesium chloride, which decomposes in a slightly reducing atmosphere to produce hydrogen chloride gas. At temperatures above 900 ° C, hydrogen chloride gas reacts with iron in the magnesite raw material to form volatile iron chlorides. The average composition of the output atmosphere from the chlorination reactor is: 2 vol. % HCl, 18 vol. % H2O, 20% CO2 by volume and 60% vol. % N2. The liquidation of this atmosphere in. At present, it reliably performs by wet spraying and water spraying, and from the technological point of view, the complex, economically and energy-intensive treatment of the resulting solutions, upon concentration, yields magnesium chloride hexahydrate and subsequently dried magnesium chloride monohydrate which repeats to the chlorination reactor and performs chlorine. agents.
Vyššie uvedené nedostatky sú odstránené sposobom podfa vynálezu, ktorého podstatou je, že výstupná atmosféra z chloračného reaktora po odlúčení pevných úletov. a rozložení skondenzovaných chloridov sa napojí na výstup kalcinačného reaktora magnezitovej suroviny ohriatej na teplotu v intervale 130 až 200 °C. Tým sa zaručí likvidácia chlorovodíka v- důsledku jeho adsorpcie na zrnách kalcinovanej magnezitovej suroviny a súčasnej tvorby chloridu horečnatého. Nachlórovaný materiál sa vracia spát do chloračného reaktora.The above drawbacks are overcome by the method of the invention, which is based on the fact that the output atmosphere of the chlorination reactor after separation of solid debris. and the condensation chloride distribution is connected to the output of the calcination reactor of the magnesite feedstock heated to a temperature in the range of 130-200 ° C. This ensures the destruction of the hydrogen chloride due to its adsorption on the grains of the calcined magnesite raw material and the simultaneous formation of magnesium chloride. The chlorinated material is returned to the chlorination reactor.
Příklad 1Example 1
Na chloráciu sa použil kalcinovaný magnezitový úlet z elektrofiltrov s obsahom 38 hmot. % MgO. Chlorácia sa realizovala vo fluidnej vrstvě pri teplote 150 °C s atmosférou o zložení: 2,00 obj. % HC1, 17,44 obj. % H2O, 20,16 obj. % CO2 a 60,40 obj. % N2. Pri spotrebe atmosféry 1,55 m3/kg vsádzky sa získal produkt s obsahom 17,75 hmot. % Cl iónov.For chlorination, calcined magnesite drift from 38-wt. % MgO. Chlorination was carried out in a fluidized bed at a temperature of 150 ° C with an atmosphere of the following composition: 2.00 vol. % HCl, 17.44 vol. % H2O, 20.16 vol. % CO2 and 60,40% vol. % N2. At an atmosphere consumption of 1.55 m 3 / kg of batch, a product with a content of 17.75 wt. % Cl ions.
Příklad 2Example 2
Na chloráciu sa použil kalcinovaný flotačný magnezitový koncentrát s obsahom 55 hmot. % MgO. Chlorácia sa realizovala vo fluidnej vrstvě pri teplote 150 °C s atmosférou o zložení: 2,00 obj. % HC1, 17,44 obj. % H2O, 20,16 obj. % CO2 a 60,40 obj. % N2. Pri spotrebe atmosféry 3,0 m3/kg vsádzky sa získal produkt s obsahom 16,52 hmot. % Cl iónov.For chlorination, a calcined flotation magnesite concentrate containing 55 wt. % MgO. Chlorination was carried out in a fluidized bed at a temperature of 150 ° C with an atmosphere of the following composition: 2.00 vol. % HCl, 17.44 vol. % H2O, 20.16 vol. % CO2 and 60,40% vol. % N2. At an atmospheric consumption of 3.0 m 3 / kg of batch, a product containing 16.52 wt. % Cl ions.
Příklad 3Example 3
Na chloráciu sa použil kalcinovaný flotačný magnezitový koncentrát s obsahom 55 hmot. % MgO. Chlorácia sa realizovala vo fluidnej vrstvě pri teplote 200 °C s atmosférou o zložení: 2,00 obj. % HC1, 17,44 obj. % H2O, 20,16 obj. % CO2 a 60,40 obj. % N2. Pri spotrebe atmosféry 0,75 m3/kg vsádzky sa získal produkt s obsahom 6,58 hmot. % Cl ΐόηιονι.For chlorination, a calcined flotation magnesite concentrate containing 55 wt. % MgO. Chlorination was carried out in a fluidized bed at 200 ° C with an atmosphere of the following composition: 2.00 vol. % HCl, 17.44 vol. % H2O, 20.16 vol. % CO2 and 60,40% vol. % N2. At an atmospheric consumption of 0.75 m 3 / kg batch, a product containing 6.58 wt. % Cl ΐόηιονι.
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CS851182A CS254662B1 (en) | 1985-02-20 | 1985-02-20 | Process for the regeneration of hydrogen chloride in the chlorination of magnesite raw materials |
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CS851182A CS254662B1 (en) | 1985-02-20 | 1985-02-20 | Process for the regeneration of hydrogen chloride in the chlorination of magnesite raw materials |
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CS118285A1 CS118285A1 (en) | 1987-06-11 |
CS254662B1 true CS254662B1 (en) | 1988-01-15 |
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CS851182A CS254662B1 (en) | 1985-02-20 | 1985-02-20 | Process for the regeneration of hydrogen chloride in the chlorination of magnesite raw materials |
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1985
- 1985-02-20 CS CS851182A patent/CS254662B1/en unknown
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