Combination Elevated Ground Flare System Safety Knock Out Drum Flare System

Combination Elevated Ground Flare System Safety Knock Out Drum Flare System

 

Flare System is to handle the discharged combustible gas under the conditions of normal operation, start-up, shut-down and emergencies, which ensure the gas to be flared out instantaneously, safely and reliably and to meet the demand of environmental protection.

 

Flare System is a kind of safety equipment comprised of pipeline, knock out device, fire retardant equipment, flare burner, ignition system, flare riser and other components.

 

Flare Categories:

* Based on the vent gas media’s physical parameters (mainly for toxicity of the vent gas media), discharge pressure, flow rate and so on, the flare shall be divided into two categories – elevated flare and ground flare.

 

* The elevated flare, based on the support way, shall be divided into self-supported flare, inhaul supported flare and derrick supported flare. The derrick supported flare, based on types of the riser to be fixed, shall be divided into fixed derrick supported flare, demountable derrick supported flare.

 

* The ground flare, based on vent gas treatment capacity, shall be divided into enclosed ground flare and open ground flare.

 

* Based on structure of flare burner, the flare shall be divided into steam-assist flare, forced draft assist flare, defused flare, LHV flare, multi-hole collision flare, sonic flare, etc.

 

Options of flare types

Elevated flare	Ground flare
▽ Media attribute: unlimited   ▽ Industry: unlimited ▽ Capacity: unlimited	▽ Media attribute: The media which is no extremely harmful. ▽ Industry: mainly focus on chemical field ▽Capacity: up to 150t/h for enclosed ground flare and unlimited for open flare

 

Options of support way for elevated flare system:

Self-supported	Inhaul	Derrick supported
		Fixed flare	Demountable flare
▽Industry: Natural gas processing plant   ▽Capacity: small ▽Height: not higher than 20m	▽Capacity: small ▽Height: up to 40m.	▽Industry: refinery, coal-chemical, LNG, off-shore, etc. ▽Capacity: large ▽Height: 40-160m ▽Application: The devices matching up the flare system need “same-time start-up & shut-down”	▽Industry: refinery, coal-chemical, LNG, off-shore, etc. ▽Capacity: large ▽Height: 40-160m ▽Application: The devices matching up multi sets of flare system can’t be “same-time start-up & shut-down”, need to reserve extra flare system for expansion and save land investment.

 

 

 

Options of ground flare system

Enclosed ground flare system	Open ground flare system
▽ Media attribute: toxic flare gas, but not extremely or highly harmful ▽ Industry: focus on chemical industry
▽Capacity: not exceed 150t/h for single stack ▽Discharge pressure: up to 10kpag within BL (subject to the media)	▽Capacity: unlimited   ▽Discharge pressure: up to 80kpag within BL (subject to the media)

 

 

Options of flare burner

 

Steam assist type	Forced draft type	Diffused type	LHV type	Multi-hole collision type	Sonic type
▽Industry: Unlimited ▽Media: Heavy Hydrocarbon ▽Discharge pressure: lower, need assist for smokeless combustion ▽Utility: Steam available	▽Industry: Unlimited ▽Media: Heavy Hydrocarbon ▽Discharge pressure: lower, need assist for smokeless combustion ▽Utility: Non-steam ▽Location: applicable for cold area.	▽Industry : Coal chemical	▽Media: LHV or hard-combustible media like sour gas or ammonia	▽Industry: Natural gas ▽Media: Light hydrocarbon composition	▽Media: Off-shore platform     ▽Discharge pressure: Higher ▽Defect: Noisy

 

 

 Working principle / flow process

Combination of Ground Flare and Elevated Flare:

l Ground flare is to handle the discharged combustible gas under the conditions of star-up, shut-down and normal operation. Elevated flare is to handle large stream of discharged combustible gas under emergencies.

l The combination of ground flare and elevated flare completely solved the small flow smoldering problem happened to large diameter elevated flare, and the environmental problem happened to the elevated flare like light pollution and noise, etc., under normal daily operation.

 

 

 

 

 

Advantages

1. Use international engineering software like FLARESIM, FLARENET, FLUENT, etc.;

2. Own combustion test platform to simulate combustion conditions based on various types of flare gas;

3. Own numbers of patent technologies and know-how;

4. Have professional engineering design qualification;

5. Have high-qualified engineering design team & research and development team;

6. Have plentiful and comprehensive experiences of engineering construction;

7. Have professional & high efficient after-sale service system.

 

Typical Project

22,000,000T/y Refinery Project at CNOOC Huizhou Refinery

Phase #1 - 10,000,000T/y Refinery Project: The flare system consists of HP flare (DN1600), LP flare (DN1600) and Sour gas flare (DN500), and a reservation for DN1600 flare riser. The height of flare system: 150m.

Phase #2 – 12,000,000T/y Refinery Project: Based on the reserved space of phase #1 for DN1600 flare riser and the optimized design of system, SMDERI took full advantage of “on-line assembly & system expansion” of the demountable common derrick flare to realize the reconstruction & expansion of phase #1 flare system and reach the target of multi-risers being set on a common derrick. For the best utilization of land, SMDERI provided his technical support so that the land investment was saved.

The flare gas recovery system was equipped with a 20,000M3 Gas Holder, 2 units of 600,000M3 screw compressors and 2 units of 300,000M3 screw compressors.

 

40,000,000T/y Refining & Chemical Integration Project, at Zhejiang Petrochemical Co., Ltd.

4 sets of Open Ground Flare System shall be arranged for Phase #1 of the project:

Ethylene Ground Flare: 1931.8t/h, fence – 155*136m H15m, burner – 1164 units

Chemical Ground Flare: 1958.9t/h, fence – 166*105m H15m, burner – 1017 units

PX Ground Flare: 2144t/h, fence – 78*117*145m H15m, burner – 775 units

Styrene Ground Flare: 2369t/h, fence – 145*110m, H15m, burner – 901 units

 

 

Typical Clients

Client	Project	Reference Data
Zhejiang Petrochemical Co., Ltd.	Ground Flare System for 40,000,000T/y Refining & Chemical Integration Project Phase #1	4 sets of Open Ground Flare System
Zhongan Allied Coal Chemical Co., Ltd.	Coal-to-methanol and Olefin Conversion Project	Demountable flare: 2*DN1800+DN1200+DN600+DN450 H150m
CNOOC Huizhou Refinery	22,000,000T/y Refining Project	Demountable flare: 2*DN1300+DN400, H140m
PKOP Chimkent Refinery, Kazakhstan	Refining Upgrade Project	Demountable elevated flare: 2*DN1300+DN400, H140m
Sinopec-Mitsui, Shanghai	400,000T/y Phenol Acetone Unit	2 sets of Enclosed Ground Flare System
China Shenhua Coal-Oil Chemical Co., Ltd., Xinjiang Coal Chemical Corp.	680,000T/y New Coal-based Material Project	Fixed Elevated Flare: 2*DN1800+DN800+2*DN500, H150m
Sinochem Quanzhou Petrochemical Co., Ltd.	12,000,000T/y Refining Project	Fixed Elevated Flare: DN1200+DN1600+DN700, H140m

 

Patent Technology:

l Demountable & common derrick elevated flare and its assembly & disassembly system (Utility Model Patent No.ZL200620048466.X)

l The Assembly & disassembly system of demountable & common derrick elevated flare and its method of assembly & disassembly (Invention Patent No.ZL200610119032.9)

l Staged discharge combustion system for combustible waste gas (Utility Patent No.ZL200620048087.0)

l Staged discharge combustion system for combustible waste gas and its method of usage method (Invention Patent No.ZL200610118674.7)

l Steam-assist flare burner (Invention Patent No.ZL200610118675.1)

l Water seal structure for flare system (Invention Patent No.ZL200810041594.5)

l Open ground flare (Utility Model Patent No.ZL201020529360.8)

l Multi-side demountable & common derrick elevated flare (Utility Model Patent No.ZL201120233838.7)

l New large stream of enclosed ground flare (Utility Model Patent No.ZL201120227204.0)