Since 2015, 10 patents has been achieved, among which 1 is invention patent; We have made up the Beijing general atlas, The Heating Engineering, with Beijing local standard applied, which plays a leading and demonstrate role in the national heating industry; We have developed static dust-cleaning bag filter with features of less occupied land, investment saving, low operation cost and ultra-low emission. Currently, the equipment is under installation stage; We have developed ultra-low emission bag, which is suitable for the ultra-low emission under high-speed filtering air. It has been applied in Ironmaking Department of Qiangang.

     Dedusting type of scrap cutting: opening cut without any environmental protection measures; cut inside plant with sprinkling; cut inside the plant with collecting device and fume purifying devices. 

     The mobile dedusting hood car is applied and traversing between cutting positions, which improves the operation efficiency; Mechanical flap valve is used to connect the fixed pipe and movable pipe, which achieves a zero leakage; Spark arrestor is adopted to collect the sparks in fume so as to ensure a safe and stable operation of equipment.

No.	Invention authorization	Patent No.	Patent name	Patent Type
1	Utility model authorization	ZL 2012 2 0279574.3	Mobile cutting dedusting hood car	Utility model
2	Utility model authorization	ZL 2012 2 0278721.5	Mechanical flap valve	Utility model
3	Utility model authorization	ZL 2011 2 0009732.9	S type spark arrestor	Utility model

        Technology of static dust-cleaning bag type dedusting

        Flow gas after purification or outside air is used to clean dust, so there is no need for the pneumatic parts such as air compression system, air cylinder, pulse valve and so on. The dust-cleaning mechanism adopts patented technology product. Relying on machine + stroke switch to control dust cleaning, the operation of dust-cleaning mechanism is stable and reliable with low power consumption. The simple structure leaves few fault points and high reliability.

       Ultra-clean emission technology

       Since 2015, we have started the research and development of ultra-clean emission technology of dust removal system by virtue of the internal renovation project of Shougang Group. And a set of the dust removal system came in stream in March 2017, and its chimney particulate matter emission concentration is less than 4mg/Nm3, far better than the national standard.

 

Unit under measurement	Qiangang Steelmaking Division under Shougang Co.
Sample type	Stationary pollution source
Inspection instrument	Laoying 3012H fume tester(SB003), AEL-200  Electronic balance(SB017), Drying box LG100B(SB023), Air pressure gauge DYM3(SB056)
Test method	Particle material testing in fume discharged by stationary pollution source and sampling from gaseous pollutant GB/T16157-1996
Inspection type	Delegation	Report No.	2017-Q-5-7
Sampling date	May.4th 2017	Inspection date	May 6th 2017
Test location	Test item	Detecting point	Result
F4 dedusting (status one)	Offgas Temp.	Flue	24℃
	Air volume at standard condition	Flue	9.73*104m3/h
	Actual measured density of particles	Flue	2.2mg/m3
F4 dedusting (status Two)	Offgas temp.	Flue	24℃
	Air volume at standard condition	Flue	9.57*104m3/h
	Actual measured density of particles	Flue	3.3mg/m3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Primary and secondary combination collecting hood in coke side of coke oven

Integral collecting hood covering side suction, top suction and trench cover in casthouse.

 

Coke oven dedusting performance list of Beijing Shougang International 

o.	Project	Project type	Oven mode	Start-up date	Remark
1	Car tipper dedusting system necessary for technical modification of Shouqin's continuous slab caster.	System design		2005	Raw material process
2	F4 dedusting 45m2 ESP renovation in Ironmaking Department of Qiangang.	EPC		2017.03	Ironmaking process
3	Sichuan Neijiang Bowei Xinyu 2.0MTPA Coking Project	EPC	6m stamp-charging coke oven	2014.01	Coking process
4	Indian Jindal 85x104t/a coking plant (including coke side dedusting and fume eliminating dedusting car)	Engineering and procurement	4.3m stamp-charging coke oven	2009.08	Coking process
5	New Dedusting facilities project in shaft kiln product room area of Qiangang steelmaking plant	EPC		2016.01	Steelmaking process
6	Dedusting system of 2250mm hot finishing mill in Shougang Jingtang	System design		2008	Steel rolling process
7	Modification project of 40m2 and double-50m2 EPS for original system environmental dedusting upgrading in Shougang sintering plant	EPC		2016.08	Sintering pelletizing process
8	Modification project of 130m2 and 140m2 EPS for original system environmental dedusting upgrading in Qiangang sintering plant	EPC		2016.03	Sintering pelletizing process

 

Wang Bo     Mobile phone: 13810568698    Fixed phone:  88298687
Zhen Ling    Mobile phone: 18611979670    Fixed phone:  88298690