Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Lime-coke-calcium carbide production joint apparatus

A combined device and limestone technology, applied in lime production, coke oven, petroleum industry and other directions, can solve the problems of increasing the pollution of calcium carbide furnace, high recovery cost, unfavorable quicklime, etc., to extend the production cycle and equipment service life, and reduce energy consumption. and production costs, the effect of reducing the number of downtimes

Active Publication Date: 2016-03-02
SHIJIAZHUANG XINHUA IND FURNACE CO LTD
View PDF4 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the lime calcination process, a large amount of carbon dioxide will be emitted. On average, every ton of lime produced will emit close to a ton of carbon dioxide. In traditional lime calcination equipment, the carbon dioxide will be discharged into the atmosphere along with the flue gas. Due to the low concentration of carbon dioxide mixed with the flue gas, the recovery cost is high. It is not conducive to recovery; in the traditional coke production process, coal carbonization equipment uses internal heating carbonization furnace, the carbonization effect is poor, the coke still contains a high content of volatile components, and the carbonization gas is also mixed with the combustion flue gas of the carbonization furnace, and tar and combustible gas are recovered Poor effect and high pollution emissions; in traditional lime kilns, fuel combustion directly calcines limestone, and harmful substances and impurities directly fall into quicklime products during the calcination process, which affects the quality of quicklime, which is not conducive to the production of high-quality quicklime, and also affects the quality of calcium carbide. Product quality, the degree of coking of coke is low, and the content of volatile components is high. After entering the calcium carbide furnace, the pollution of the calcium carbide furnace will be further increased.

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
  • Lime-coke-calcium carbide production joint apparatus
  • Lime-coke-calcium carbide production joint apparatus
  • Lime-coke-calcium carbide production joint apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Lime, coke and calcium carbide production unit of the present invention such as figure 1 , Figure 4 As shown, it includes a lime rotary kiln, a coking rotary kiln, a calcium carbide rotary kiln 19, a carbon dioxide recovery unit 4 and a mixing briquette equipment 10. The lime rotary kiln is a partition lime rotary kiln 5 , and the coking rotary kiln is a partition coking rotary kiln 13 . Lime rotary kiln is equipped with limestone silo 1, lime cooler 8 and lime silo 9; coking rotary kiln is equipped with coal powder silo 12, coke cooler 24 and coke powder silo 17; calcium carbide rotary kiln is equipped with calcium carbide raw material silo 18 and calcium carbide outlet Silo 21. Such as figure 2As shown, the dividing wall lime rotary kiln and the dividing wall coking rotary kiln are respectively composed of an inner ring 35 and an outer ring 34 installed coaxially. The material channel is provided with a refractory support 37 . The limestone silo is connected to...

Embodiment 2

[0027] Another embodiment of the present invention is as image 3 As shown, it includes two partition lime rotary kilns 5, two partition wall coking rotary kilns 13 and two calcium carbide rotary kilns 19. 7 are connected, and the two calcium carbide rotary kilns are connected through the kiln head cover 7. Each partition lime rotary kiln is equipped with limestone silo 1, lime cooler 8 and limestone heat accumulator 31, and each partition wall coking rotary kiln is equipped with coal powder silo 12, coke cooler 24 and coal powder heat accumulator 32, Each calcium carbide rotary kiln is equipped with a calcium carbide raw material heat accumulator 33 and a calcium carbide raw material bin 18, and the two calcium carbide rotary kilns share a calcium carbide discharge bin 21. The limestone heat accumulator is connected with the partition lime rotary kiln through the kiln tail cover, the pulverized coal heat accumulator is connected with the partition wall coking rotary kiln thr...

Embodiment 3

[0031] Other structure and operation process of present embodiment are identical with embodiment 2, as Figure 4 As shown, the kiln chamber 23 of the rotary kiln and the inner wall of the discharge bin 21 are coated with a self-fluxing refractory material layer 20, and the rotary kiln can produce metals such as aluminum, manganese, silicon, nickel and iron. The material layer is a mixture of the oxides of the above metals and carbon and its auxiliary raw materials, and the pressed refractory material is paved on the inner wall of the rotary kiln and the discharge bin. The rotary kiln can burn glass or other high-temperature calcined materials, and the temperature of the fired glass or other high-temperature calcined materials must not be lower than 1500 0 c. The operating mode of the dividing wall rotary kiln is the same as in Example 2.

[0032] When the rotary kiln produces Si or SiC, the chemical formula is SiO 2 +C+F reacts at high temperature to form Si, or SiO 2 +C+F...

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

No PUM Login to View More

Abstract

The present invention relates to a lime-coke-calcium carbide production joint apparatus. The production joint apparatus comprises a lime rotary kiln, a coking rotary kiln and a calcium carbide rotary kiln. The lime rotary kiln is provided with a limestone bin, a lime cooler and a lime bin; the coking rotary kiln is provided with a coal powder bin, a coke cooler and a coke powder bin; and the calcium carbide rotary kiln is provided with a calcium carbide raw material bin and a calcium carbide discharge bin. The lime bin and the coke powder bin are connected to the calcium carbide raw material bin through a mixing and ball-pressing device or a calcium carbide raw material powder conveyor, the calcium carbide raw material bin is connected to the kiln chamber of the calcium carbide rotating kiln through a kiln-end hood, and the kiln chamber is connected to the calcium carbide discharge bin through a firing hood. self-melting resistant material layers are separately coated on the kiln chamber of the calcium carbide rotating kiln and the inner wall of the calcium carbide discharge bin, and the calcium carbide discharge bin is provided with an induction heating coil. The lime-coke-calcium carbide production joint apparatus provided by the present invention makes full use of residual heat of the rotating kilns, reduces the heat loss in a production process, and comprehensively uses heat and materials, so that the energy consumption and production costs are lowered, and the emission of carbon dioxide is reduced.

Description

technical field [0001] The invention belongs to the technical field of chemical production, and relates to a lime, coke and calcium carbide production combined device. Background technique [0002] Calcium carbide, molecular formula CaC 2 , commonly known as calcium carbide, calcium carbide reacts with water to form acetylene. Acetylene is an important chemical raw material, mainly used in the production of polyvinyl chloride-based, vinyl acetate-based and acrylic-based products. More than 70% of PVC products in my country are derived from acetylene produced by calcium carbide. my country's shortage of oil resources and relative abundance of coal resources determine that the calcium carbide industry will continue to play an irreplaceable role in meeting downstream demand. [0003] In the existing technology, lime, coke and calcium carbide production are interrelated technical fields. Lime kilns produce quicklime, coking furnaces produce coke, and provide raw materials for ...

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): C04B2/10C01B31/32C10B53/04C01B32/942
CPCY02P40/40
Inventor 贾会平
Owner SHIJIAZHUANG XINHUA IND FURNACE CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products