BG110533A - THERMAL DISSOCIATION OF CaCO3 IN THE PRODUCTION OF Na2CO3 BY THE AMMONIUM METHOD IN FURNACES OF THE TYPE FOR COAL COKING - Google Patents

THERMAL DISSOCIATION OF CaCO3 IN THE PRODUCTION OF Na2CO3 BY THE AMMONIUM METHOD IN FURNACES OF THE TYPE FOR COAL COKING Download PDF

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Publication number
BG110533A
BG110533A BG10110533A BG11053309A BG110533A BG 110533 A BG110533 A BG 110533A BG 10110533 A BG10110533 A BG 10110533A BG 11053309 A BG11053309 A BG 11053309A BG 110533 A BG110533 A BG 110533A
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BG
Bulgaria
Prior art keywords
furnaces
type
production
raw material
caco3
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BG10110533A
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Bulgarian (bg)
Inventor
Михаил Будоров
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Михаил Будоров
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Priority to BG10110533A priority Critical patent/BG110533A/en
Publication of BG110533A publication Critical patent/BG110533A/en

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Abstract

The invention refers to a method for thermal dissociation of natural carbon raw material SaSO3, in the production of Na2SO3 by the ammonium method in furnaces of the type for coal coking as a replacement of the now in use shaft-type furnaces. In this method the fuel and the products of its burning are not in direct contact with the natural raw material in the process of thermal dissociation. By the proposed method the concentration of CO2 reaches 100% and CaO is not polluted by the fuel. The fire-resistant material for building the walls, which are in contact with the natural raw material, inthe process of its dissociation are of the type of fire-resistant materials used for building the inner side of the shaft-type furnaces, in which the thermal dissociation of SaSO3, CO2 is done.

Description

(57) Изобретението се отнася до метод за термично разлагане на природната карбонатна суровина СаСОЗ, при производството на Na2CO3 по амонячния метод в пещи от типа за коксуване на въглища в замяна на сега ползваните шахтни пещи. По този метод горивото и продуктите от изгарянето му нямат пряк допир с природната суровина в процеса на термичното разлагане. С предложения метод концентрацията на СО2 достиг а до 100% и СаО не се замърсява от горивото. Огнеупорите за изграждане на стените, които са в контакт с природната суровина, в процеса на разлагането й са от типа на огнеупорите, с които се изгражда в ътрешната страна на шахтните пещи, в които се извършва термичното разлагане на СаСОЗ на СО2 и СаО.(57) The invention relates to a method for the thermal decomposition of CaCO3 natural carbonate feedstock in the production of Na2CO3 by the ammonia method in coal-type furnaces in exchange for the currently used shaft furnaces. By this method, the fuel and its combustion products do not have direct contact with the natural raw material during the thermal decomposition process. With the proposed method, the concentration of CO2 reaches up to 100% and CaO is not polluted by the fuel. The refractories for the construction of the walls in contact with the natural raw material, in the process of its decomposition, are of the type of refractories used to construct in the inner side of the shaft furnaces in which the thermal decomposition of CaCO3 of CO2 and CaO is carried out.

претенции, 0 • · ·· · · · · · · « · · · · ···· • · ·· · · ·· ···· • ·· · · ·· · ···· ···· ··· ·♦· ·· ··claims, 0 • · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·

Термично разлагане наСлс^· при производството наЛ^% по амонячния метод, в пещи от типа за коксуване на въглища.Thermal decomposition of HCl in the production of L ^% by the ammonia method in coal-type furnaces.

При производството на содалАдао амонячния метод,една от основните суровини е варовикът, от него чрез термично разлагане се получава въглероден диовсид с ол и калциев окис СаО ·In the production of sodalAdao ammonia method, one of the main raw materials is limestone, from which carbon dioxide with o l and calcium oxide CaO are obtained by thermal decomposition.

Термичното разлагане на варовика в заводите за сода се извършва в шахтови пещи. В тези пещи за гориво се използваThe thermal decomposition of limestone in soda plants is done in shaft furnaces. In these fuel stoves are used

С кокс или антрацит, като горивото се смесва с варовика и чрез подаване на въздух горивният процес се извършва сред късовете варовик.With coke or anthracite, the fuel is mixed with the limestone and by the air supply the combustion process is carried out among the limestone pieces.

по тази технология може да се получи, при заводски условия, нонцентрация нассиоколо 40%. Когато се използва газ с по висоно съдържание на с.с^ се получават по добри резултати.Затова стремежът еда произвеждаме газ с по високо съдържание на CQ&this technology can produce, at factory conditions, a non-concentration of about 40%. When using a gas with a higher content of cc ^, better results are obtained. Therefore, the pursuit of food produces a gas with a higher content of CQ &

В шахтните пещи,поради непосредствения контакт на горивото с варовика, се получава замърсяване с примеси от пепелта на горивото нас^о инамаляване на химическата активност.Due to the direct contact of the fuel with the limestone in the shaft furnaces, contamination with impurities from the ash of the fuel results in a decrease in the chemical activity.

При разлагането на&ефв пещи с индерентно загряване се получава газ спо висоно съдържание нас.О£ и са0 с по висока химическа активност. Това може да се получи ако варовикът се разлага в пещи тип за коксуване на въглища.The decomposition of the < RTI ID = 0.0 > efv < / RTI > furnaces with inert heating results in a gas having a higher content of oO and a 0 with higher chemical activity. This can be obtained if the limestone is decomposed into coal-type furnaces.

Claims (1)

АВТОРСКИ ПРЕТЕНЦИИCOPYRIGHT CLAIMS Термичното разлагане наемна СаО и Cfy при производството наДч^по амонячния метод да се извършва в пещи от типа за коксуване на въглища, в замяна на сега употребяваните шахтнипещи.The thermal decomposition of rented CaO and Cfy in the production of ammonia by the method of ammonia is to be carried out in coal-type furnaces in exchange for the currently used coal miners. Изобретението се отнася до метод за термично разлагане на природната карбонатна суровина СаСОЗ , при производството на Na2C03no амонячния метод в пещи от типа за коксуване на въглища в замяна на сега ползуваните шахтни пещи . По този метод горивото и продуктите от изгарянето му нямат пряк допир с природната суровина в процеса на термичното разлагане . С предложения метод концентрацията на СО2 достига до 100% и СаО не се замърсява от горивото.The invention relates to a method for the thermal decomposition of the natural carbonate raw material CaCO3 in the production of the Na2CO3no ammonia method in coal-type furnaces in exchange for the currently used shaft furnaces. By this method, the fuel and its combustion products do not have direct contact with the natural raw material during the thermal decomposition process. With the proposed method, the concentration of CO2 reaches 100% and CaO is not polluted by the fuel. Огнеупорите за изграждане на стените , които са в контакт с природната суровина, в процеса на разлагането й са от типа на огнеупорите , с които се изгражда вътрешната страна на шахтните пещи , в които се извършва термичното разлагане на СаСОЗ на СО2 и СаО.Refractories for the construction of walls that are in contact with the natural raw material in the process of decomposition are of the type of refractories used to construct the inside of the shaft furnaces in which the thermal decomposition of CaCO3 into CO2 and CaO is carried out.
BG10110533A 2009-11-26 2009-11-26 THERMAL DISSOCIATION OF CaCO3 IN THE PRODUCTION OF Na2CO3 BY THE AMMONIUM METHOD IN FURNACES OF THE TYPE FOR COAL COKING BG110533A (en)

Priority Applications (1)

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BG10110533A BG110533A (en) 2009-11-26 2009-11-26 THERMAL DISSOCIATION OF CaCO3 IN THE PRODUCTION OF Na2CO3 BY THE AMMONIUM METHOD IN FURNACES OF THE TYPE FOR COAL COKING

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BG10110533A BG110533A (en) 2009-11-26 2009-11-26 THERMAL DISSOCIATION OF CaCO3 IN THE PRODUCTION OF Na2CO3 BY THE AMMONIUM METHOD IN FURNACES OF THE TYPE FOR COAL COKING

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