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

Ultra-pure ammonia production device and production method

A production device and technology for ultra-pure ammonia, applied in separation methods, chemical instruments and methods, ammonia compounds, etc., can solve the problems of limited production of ultra-pure ammonia and high energy consumption, and achieve production cost savings, low energy consumption, The effect of improving the removal rate

Inactive Publication Date: 2021-09-28
福建省宜品嘉成科技有限公司
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both the light-removing rectification tower and the heavy-duty rectification tower of this production system need to be equipped with additional condensers and reboilers, resulting in high energy consumption, and the production capacity of ultra-pure ammonia in a single production line is limited

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
  • Ultra-pure ammonia production device and production method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A kind of ultra-pure ammonia production device, the structure is as follows figure 1 As shown, it includes two parallel evaporator groups 1 (one for use and one for standby), a heating system 2 , a partition tower 3 and a parallel adsorption-desorption device 7 . Each group of evaporators 1 is composed of two evaporators 11 in series, each evaporator 11 is provided with a packing layer 8 (stainless steel wire mesh) on the upper part, and the adjacent two evaporators 11 are connected through the overflow series pipe 4, The overflow series pipeline 4 is provided with a return liquid port 41, and the return liquid port 41 communicates with the top of the first evaporator 11; the lower part of the side wall of each evaporator 11 is provided with a liquid ammonia feed port 111; each evaporator The bottom of 11 is provided with the first heavy component discharge port 112; The top of each evaporator 11 is provided with the first light component discharge port 113; The heating...

Embodiment 2

[0059] It differs from Embodiment 1 in that each evaporator group 1 is composed of eight evaporators 11 connected in series, and other devices and their connections are the same. The specific process control situation of using the ultrapure ammonia production device of the present embodiment to produce ultrapure ammonia is as follows:

[0060] Composition of raw material liquid anhydrous industrial ammonia: moisture 0.1%, oil content 5mg / kg, iron content 1mg / kg, methane 0.099%, ethane 0.0005%, propane 0.0004%, of which ammonia content is 99.9%; liquid ammonia flow rate is 347kg / h;

[0061] Evaporator 11: diameter D=500mm, height H=800mm, temperature inside evaporator 11 is 10~40℃, pressure is 0.1~2kPaG; after one separation, the composition of the first light component is: water 0.16%, oil content of 0.3mg / kg, iron content of 0.3mg / k, methane content of 0.123%, ethane content of 0.0006%, propane content of 0.0003%, and ammonia content of 99.99%;

[0062] Heating system 2, t...

Embodiment 3

[0065] It differs from Embodiment 1 and Embodiment 2 in that each evaporator group 1 is composed of 12 evaporators 11 connected in series, and other devices and their connections are the same. The specific process control situation of using the ultrapure ammonia production device of the present embodiment to produce ultrapure ammonia is as follows:

[0066] Composition of raw material liquid anhydrous industrial ammonia: moisture 0.36%, oil content 14mg / kg, iron content 1.1mg / kg, methane 0.095%, ethane 0.0011%, propane 0.0013%, of which ammonia content is 99.7%; liquid ammonia flow rate is 500kg / h;

[0067] Evaporator 11: diameter D=500mm, height H=800mm, temperature inside evaporator 11 is 10~40℃, pressure is 0.1~2kPaG; after one separation, the composition of the first light component is: water 0.53%, oil content of 1.4mg / kg, iron content of 0.2mg / kg, methane content of 0.175%, ethane content of 0.0029%, propane content of 0.0011%, and ammonia content of 99.91%;

[0068] H...

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 invention provides an ultra-pure ammonia production device and a production method. The ultra-pure ammonia production device comprises an evaporator group, a heating system, and a divdiing wall column; the evaporator group is formed by connecting at least two evaporators in series, and the two adjacent evaporators communicate through an overflow series pipeline; a liquid ammonia feeding hole is formed in the lower part of the side wall of each evaporator; a first heavy component outlet is formed in the bottom of each evaporator; a first light component outlet is formed in the top of each evaporator; the heating system is used for providing heat for the evaporators to vaporize liquid ammonia; the dividing wall column communicates with the first light component discharge ports of the evaporators; a second light component discharge port and an ultra-pure ammonia discharge port are formed in the top of the dividing wall column; and a second heavy component outlet is formed in the bottom of the dividing wall column. According to the ultra-pure ammonia production device, higher ultrapure ammonia yield can be obtained according to production requirements, light components and heavy components can be removed at the same time at a time, energy consumption is lower, and more ultrapure ammonia production cost is saved.

Description

technical field [0001] The invention belongs to the technical field of liquid ammonia purification, and in particular relates to an ultra-pure ammonia production device and a production method. Background technique [0002] Ultra-pure ammonia is an important electronic gas in solar cells, LED light-emitting diodes, and semiconductor industries. Ultra-pure ammonia can be used as an important nitrogen source for the formation of silicon nitride films in crystalline silicon solar cells; in the preparation of LED light-emitting diodes, ultra-pure ammonia is the same as Trimethylgallium acts on sapphire to form a gallium nitride light-emitting diode through vapor phase growth; in the semiconductor production process, ultra-pure ammonia reacts with silane to form a silicon nitride film. With the development of science and technology and the increasing social demand for electronic products, new energy-saving lighting devices, and clean energy, manufacturers have higher and higher r...

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): B01D1/00B01D1/30B01D53/04C01C1/02
CPCB01D1/00B01D1/30B01D53/04C01C1/024
Inventor 陈雨新
Owner 福建省宜品嘉成科技有限公司