Unlock instant, AI-driven research and patent intelligence for your innovation.

Reactor for deep decomposition of aluminum ammonium sulfate and application method thereof

A technology of aluminum ammonium sulfate and reactor, which is applied in the fields of chemical instruments and methods, alumina/hydroxide preparation, chemical/physical processes, etc., and can solve the problems of low mixing efficiency of solid materials, slow heat transfer rate, overburning of materials, etc. problems, to achieve the effect of improving decomposition speed, efficient recovery, and low energy consumption extraction

Inactive Publication Date: 2015-09-16
INST OF PROCESS ENG CHINESE ACAD OF SCI
View PDF13 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the content of the present invention is: to provide a reactor for the deep decomposition of ammonium aluminum sulfate and its use method, in particular to a fluidized bed reactor for the deep decomposition of ammonium aluminum sulfate, and to effectively solve the problem of existing traditional roasting furnaces. Thermal decomposition equipment such as rotary kilns usually have low mixing efficiency of solid materials and slow heat transfer rate, which may easily cause problems such as over-burning or impermeability of materials

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Reactor for deep decomposition of aluminum ammonium sulfate and application method thereof
  • Reactor for deep decomposition of aluminum ammonium sulfate and application method thereof
  • Reactor for deep decomposition of aluminum ammonium sulfate and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The size of the circulating fluidized bed reactor in the monomer is: the lower part of the circulating fluidized bed reactor in the monomer is the spouted bed reactor (1), and the height-to-diameter ratio of the cylinder of the spouted bed reactor (1) is 10 : 1. The bottom end of the spouted bed reactor (1) is provided with a hot inert gas inlet (6), and the pipe diameter of the hot inert gas inlet (6) is the same as the cylinder cross-sectional area of ​​the spouted bed reactor (1). The ratio is 1:30, the outlet of the hot inert gas inlet pipe is provided with a gas distributor (5), the inner diameter of the gas distributor (5) is consistent with the pipe diameter of the hot inert gas inlet (6), and its opening ratio 20%, aluminum ammonium sulfate crystals and cold inert gas inlets (7) are arranged in the middle of the spouted bed reactor (1), and the pipe diameters of the aluminum ammonium sulfate crystals and cold inert gas inlets and the spouted bed The cross-sectio...

Embodiment 2

[0046] The size of the circulating fluidized bed reactor in the monomer is: the lower part of the circulating fluidized bed reactor in the monomer is the spouted bed reactor (1), and the height-to-diameter ratio of the cylinder of the spouted bed reactor (1) is 1 : 1. The bottom end of the spouted bed reactor (1) is provided with a hot inert gas inlet (6), and the pipe diameter of the hot inert gas inlet (6) is the same as the cylinder cross-sectional area of ​​the spouted bed reactor (1). The ratio is 1:200, the outlet of the hot inert gas inlet pipe is provided with a gas distributor (5), the inner diameter of the gas distributor (5) is consistent with the pipe diameter of the hot inert gas inlet (6), and its opening ratio 60%, aluminum ammonium sulfate crystals and cold inert gas inlets (7) are arranged in the middle of the spouted bed reactor (1), and the pipe diameters of aluminum ammonium sulfate crystals and cold inert gas inlets are connected with the spouted bed The c...

Embodiment 3

[0050] The size of the circulating fluidized bed reactor in the monomer is: the lower part of the circulating fluidized bed reactor in the monomer is the spouted bed reactor (1), and the height-to-diameter ratio of the cylinder of the spouted bed reactor (1) is 5 : 1. The bottom end of the spouted bed reactor (1) is provided with a hot inert gas inlet (6), and the pipe diameter of the hot inert gas inlet (6) is the same as the cylinder cross-sectional area of ​​the spouted bed reactor (1). The ratio is 1:100, the outlet of the hot inert gas inlet pipe is provided with a gas distributor (5), the inner diameter of the gas distributor (5) is consistent with the pipe diameter of the hot inert gas inlet (6), and its opening ratio 40%, aluminum ammonium sulfate crystals and cold inert gas inlets (7) are arranged in the middle of the spouted bed reactor (1), and the pipe diameters of the aluminum ammonium sulfate crystals and cold inert gas inlets and the spouted bed The cross-sectio...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
porosityaaaaaaaaaa
Login to View More

Abstract

The invention relates to a reactor for deep decomposition of aluminum ammonium sulfate and an application method thereof. The invention is characterized in that solid waste flyash is used as a raw material, and aluminum ammonium sulfate crystals are prepared by sulfur-base ammonium salt medium treatment and extraction of aluminium oxide in flyash; in a single internally circulating fluidized bed reactor composed of a spouted bed reactor, an airlift loop reactor, a settling expanding section and a cyclone separator, an aluminium-base heat carrier and an inert gas are used for blowing, and decomposition of aluminum ammonium sulfate is realized to prepare an aluminium oxide product; decomposition speed is accelerated, and a sulfur-base ammonium salt medium generated during the decomposition process of aluminum ammonium sulfate is efficiently recovered; and problems such as low solids mixing efficiency, low heat transfer rate, overburning or insufficient burning of materials that usually exit in traditional thermal decomposition equipment are effectively solved. The reactor is especially suitable for heating and rapid decomposition process of a solid material aluminum ammonium sulfate with phase transition properties. By the reactor, ring formation problem of traditional thermal decomposition equipment is also effectively avoided. The reactor is easy for industrial scale-up.

Description

technical field [0001] The invention belongs to the field of resource utilization of bulk solid waste, in particular to a method of using fly ash discharged from a coal-fired power plant or a coal-fired boiler as a raw material, treating the fly ash with a sulfur-based ammonium salt medium, and obtaining an alumina extract solution through crystallization A fluidized bed reactor and a method for using the fluidized bed reactor required for the deep decomposition of the isolated ammonium aluminum sulfate crystals, thereby preparing alumina and recovering ammonium sulfide. Background technique [0002] Fly ash is the fine ash collected from the flue gas of coal combustion. The annual discharge of fly ash in my country has reached 500 million tons, and the cumulative amount has reached 3.5 billion tons, of which the discharge of fly ash from coal-fired power plants is the largest. The fly ash collected by coal-fired power plants is currently mainly stored in ash yards and pile...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B01J8/24C01F7/32
Inventor 包炜军李会泉王晨晔孙振华许德华
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI