Flare units

«Corporation Uraltechnostroy» LLC has large experience in manufacturing flare systems of different types and service.

Over 100 flare units and flare tips were manufactured and delivered by the enterprise for the period of 2009-2014.

Manufactured equipment is provided with all the necessary permits.

Service

Automated flare unit UFA serves oil, gas and chemical industry enterprises to flare constant, periodical and emergency emissions.

UFA flare units are designed and manufactured in full compliance with «Rules of arrangement and safety operation of flare systems» and certified according to Customs Union Technical Regulation.

Technical specification

Operating medium	combustible gases and vapors
Production rate as per gas, thous. nm³/day	0,5…8 000
Fuel gas flow rate to pilot burners, nm³/day	5...30
Flare unit diameter, mm	50...1400
Flare unit height, m	10...110
Gas boring head diameter, mm	200…1400

Options of UFA Flare units technological execution:

· units for burning of gas with the same pressure and component composition;

· units for burning of emissions with various pressure and component compositions (combined);

· with air or vapor supply to provide smokeless burning (for heavy, wet gases, extremely low pressure gases or upon specific requirements for smokeless properties).

Scope of supply

UFA Flare unit can be manufactured in several structural designs:

· cable structure (a stack with guy-lines);

· self-supporting stack;

· elevated flare.

Components composition

Standard flare stack unit includes:

· Flare stack (stacks);

· Flare tip with gas seal and pilot burners;

· Service platforms and ladders;

· Ignition and flame control system;

At the customer’s request the following items can be supplied:

· Flare reamer;

· Flame arrestor;

· Hydraulic seal;

· flare separator;

· underground drain tank with suction pumps;

· heating system for flare collecting vessel and fuel gas pipelines.

Not only flare tips of «Corporation Uraltechnostroy» production may complete flare units but also of other domestic or foreign enterprises.

Combined flare tip (FOK) together with system of flare ignition and flame control is applied in flare units designed to burn hydrocarbon gases with hydrogen sulfide content above 8%.

Flare tips are manufactured with the following designs:

· injection type FOI;

· combined injection type FOI-C;

· combined FOK;

· combined and group together FОК-С;

· combined with vapor supply system FOK-P;

· combined with air supply system FOK-V.

Tip structure includes:

· flame stabilization system providing mixing of high quality of burning gas with air as well as combustion efficiency within a complete range of gas discharged;

· wind-proof deflector preventing flare flame fr om wind blasts and flame contact with walls. Deflector also facilitates air cooling of the most thermally impacted part of the tip which increases service life;

· protection screen reflecting radiant and acoustic energy upwards. Screen prevents the stack and ignition system equipment from heating, it also decreases flare noise;

· gas-dynamic seal (GZ) serving to purge flare tip (with fuel gas) in stand-by mode and low fire maintaining mode to avoid air entry into flare stack. Gas-dynamic seal includes shell with supporting ring and internal device of labyrinth partitions.

Shut-off gas supply is performed through a hole in a flare stack body forwarded into tube space between gas-dynamic seal and flare stack, from wh ere gas streams through orifice holes into gas-dynamic seal chambers. Gas delivery towards gas-dynamic seal is performed by means of the nozzle with throttle removable washer and directed from tie-in point into the gas pipeline supply to the pilot burner. Gas flow rate is above 30 m3/h for two gas-dynamic seals.

Flare tips standard range

Table 1 - Injection Flare Tips standard range

Type of a tip	Minimum flow rate, m³/h (m³/day)	Nominal flow rate, m³/h (m³/day)	Maximum flow rate, m³/h (m³/day)	Seal gas flow rate, m³/h (m³/day)
ФОИ - 35	12,5 (300)	1 500 (35 000)	1 700 (42 000)	5 (120)
ФОИ - 70	25 (600)	3 000 (70 000)	3 500 (85 000)	12 (336)
ФОИ - 105	37,5 (900)	4 375 (105 000)	5 250 (126 000)	12 (336)
ФОИ - 140	50 (1 200)	5 835 (140 000)	7 000 (168 000)	12 (336)
ФОИ - 175	62,5 (1 500)	7 290 (175 000)	8 750 (210 000)	12 (336)
ФОИ - 210	75 (1 800)	8 750 (210 000)	10 500 (252 000)	12 (336)
ФОИ - 245	87,5 (2 100)	10 210 (245 000)	12 250 (295 000)	12 (336)
ФОИ - С - 50	12,5 (300)	2 085 (50 000)	2 350 (55 800)	5 (120)/ 5 (120)
ФОИ - С - 100	25 (600)	4 170 (100 000)	4 750 (114 000)	12 (336)/12 (336)
ФОИ - С - 150	37,5 (900)	6 250 (150 000)	7 120 (170 900)	12 (336)/12 (336)
ФОИ - С - 200	50 (1 200)	8 350 (200 000)	9 500 (228 000)	12 (336)/12 (336)
ФОИ - С - 250	62,5 (1 500)	10 420 (250 000)	11 875 (285 000)	12 (336)/12 (336)
ФОИ - С - 300	75 (1 800)	12 500 (300 000)	14 250 (342 000)	12 (336)/12 (336)
ФОИ - С - 350	87,5 (2 100)	14 585 (350 000)	16 625 (400 000)	12 (336)/12 (336)

Table 2- Standard range of combined flare tips

Type of a tip	Minimum flow rate, m³/h (m³/day)	Maximum flow rate, m³/h (m³/day)	Seal gas flow rate, m³/h (m³/day), not more than
ФОК - 80	59 (1 420)	1 304 (31 290)	3 (72)
ФОК - 100	93 (2 220)	2 037 (48 890)	5 (120)
ФОК - 150	208 (5 000)	4 583 (110 000)	8 (192)
ФОК - 200	370 (8 890)	8 148 (195 560)	12 (336)
ФОК - 250	579 (13 890)	12 732 (305 560)	20 (480)
ФОК - 300	833 (20 000)	18 333 (440 000)	30 (720)
ФОК - 400	1 482 (35 560)	32 593 (782 220)	50 (1 200)
ФОК - 500	2 315 (55 560)	50 926 (1 222 220)	80 (1 920)
ФОК - 600	3 333 (80 000)	73 333 (1 760 000)	120 (2 880)
ФОК - 700	4 537 (108 890)	99 815 (2 395 560)	160 (3 840)
ФОК - 800	5 926 (142 220)	130 370 (3 128 890)	220 (5 280)
ФОК - 1000	9 259 (222 220)	203 704 (4 888 890)	350 (8 400)
ФОК - 1200	13 333 (320 000)	293 333 (7 040 000)	500 (12 000)

Technical specification for flare tips

Тable 3 – Main performance parameters for flare tips

Parameter	Value
	ФОК (ФОК-С, ФОК-П, ФОК-В)	ФОИ (ФОИ-С)
1. Amount of flared gas at the main burner, m³/h (m³/day)	see table 1, 2
2. Fuel gas flow rate, fed to one pilot burner, m³/h (m³/day)	2,5 - 5 (60…120)
3. Seal gas flow rate, m³/h (m³/day)	see table 1, 2
4. Gas pressure at the main burner, MPa, not less than	0,004…0,4	0,05…1,0
5. Fuel gas pressure, fed to a pilot burner, MPa, not less than	0,15…0,25	0,05…1,0
6. Seal gas pressure, MPa, not less than	0,15…0,25	0,05…1,0
7. Electrical power
alternative current, V	180-264
frequency, Hz	47-55
8. Consumed power, VA, not more than	400
9. Diameter (nominal) of a tip, mm	see table 4,5
10. Operation mode	uninterruptible with constant pilot burner flame
11. Weight, kg, not more than	see table 4,5
12. Weight for flare ignition and flame control system, kg, not more than	300
13. Height, mm, not more than	see table 4,5