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Heavy soda ash fluidized calcoining coling system and process thereof

A cooling system and calcination technology, which is applied in the direction of alkali metal carbonate to change the crystal water content, etc., can solve the problems of large amount of drying and cooling air, affecting the service life of the exhaust fan, and short operation period of the device, so as to reduce the amount of equipment maintenance , Guarantee the quality of calcination, the effect of small investment in plant and civil engineering

Active Publication Date: 2006-06-14
SHANDONG TIANLI DRYING TECH & EQUIP
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Problems solved by technology

[0007] The fluidized bed calcination cooling device imported from abroad has inherent deficiencies that are difficult to change, such as low production capacity, short device operation cycle, high energy consumption, poor environment, and relatively large dust removal equipment.
At the same time, the device also has the disadvantages of long process, many equipments, large amount of drying and cooling air, high energy consumption, frequent dead bed phenomenon, difficulty in recovery of lye, tail gas entrainment of lye affects the service life of the exhaust fan and pollutes the environment, etc.

Method used

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  • Heavy soda ash fluidized calcoining coling system and process thereof

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Embodiment Construction

[0032]The composition of the system of the present invention is shown in FIG. 1 , the feeding star feeder 6 is connected with the mixing conveyor 5 . The alkali-returning feeder 7 is also connected with the alkali-returning feed port of the mixing conveyor 5, and the mixing conveyor 5 is connected with the side of the heavy alkali fluidized bed 4 calciner. The calciner has built-in heat exchange tubes, and the heat exchange tubes are arranged as In the form of serpentine tubes, the front calcining part is connected with the steam pipe and the condensed water recovery pipe, and the rear cooling part is connected with the cooling water pipe and the cooling return water pipe. Simultaneously, the discharge port of the calciner is connected with the finished product area through the discharge rotary discharge valve 8 . The top of the heavy alkali fluidized bed 4 is also connected to the cyclone dust collector 9 , the upper part of the cyclone dust collector 9 is connected to the ba...

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Abstract

The present invention discloses a heavy ash fluidizing calcinations and cooling system and its technological process. Said system includes the following several portions: material conveying device, alkali-returning device, calcinations cooling device, dust-removing device and air-supplying device, etc. Besides, said invention also provides their connection mode and concrete steps of said technological process.

Description

technical field [0001] The invention relates to a cooling system and process of a heavy ash fluidized calcination system in the soda ash calcination industry. Background technique [0002] The soda ash calcination industry is a very important category in modern industry. There are two main types of soda ash products, heavy soda ash and light soda ash. The difference in specifications is mainly due to the difference in physical properties, such as bulk density, particle size, shape and resting angle. The density of general heavy soda ash is 1000~1200kg / m 3 . [0003] The task of calcining heavy soda ash is to heat and dehydrate the monohydrate alkali containing surface water (the main component is sodium carbonate monohydrate) and cool it to produce anhydrous sodium carbonate suitable for packaging. At present, there are two kinds of heavy soda ash calcination technologies in our country: one is to use steam rotary calciner for calcination of heavy soda ash; the other is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01D7/35
Inventor 彭丽华蒋斌董宪华郭文梁国林李佳磊曹明见田青
Owner SHANDONG TIANLI DRYING TECH & EQUIP
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