Gas Boiler Producing 25 Tons of Steam Per Hour

№

Questions

Answers

Remarks

1. Specification

1.1

Number of boilers

Two

1 operating + 1 reserve

1.2

Type of boiler (Hot-water / steam).

Steam boiler

The design of the boilers is determined by the project

1.3

Boiler output, nominal, t / h

25

For one boiler

1.4

Operating temperature ,0С

175

1.5

Working medium pressure behind the boiler at rated load, MPa

0,6 ÷1,0

1.6

Duration of steam boiler room operation

twenty four hours

1.7

Parameters of steam are necessary at the entrance to the process unit.

Productivity: 1228,0 Mol / h.
Productivity: 22123,0 kg/h.
Productivity: 22,15  m3/h.

1.8

Condensate return

Quantity,%

Quality

Condensate pressure, MPa

Temperature, оС

60% of the maximum steam consumption

Contaminated

0,4÷0,6

100÷120

1.9

Climatic conditions (KMC 2.01.01-94)

- Absolute maximum - + 46,4°С;

- Absolute maximum – 24,9°С;

- Average maximum of the hottest month - + 36,7°С;

- Average maximum of the coldest month - -4,2°С;

- annual average -  +15°С;

- Average temperature of the coldest five-day period -  –15°С;

1.10

Installation of boilers (open, semi-open, closed).

Installation in a block-modular building

1.11

Seismicity of the installation area of ​​the boiler.

Seismicity of the construction site, taking into account the category of soils - 8 points. Soil category according to seismic properties - III. 

1.12

The boiler installation area.

Republic of Uzbekistan, Bukhara region, Karakul district, expansion Uchkyr LLC “Gazlineftegazdobycha”

1.13

Type of construction

Construction in the existing complex.

1.14

Planned date of commissioning

December 2017.

2. Fuel

2.1

Prime fuel

Standby fuel

natural gas of the Bukhara field

2.2

Fuel composition

The content of methane (CH4), at least 96%

The content of higher hydrocarbons (CnH2n + 2), not more than 0.8%

Inert content (N2 + CO2), not more than 3.0%

The content of sulfur compounds in terms of sulfur, not more than 35.0 mg / m3

The content of mechanical impurities is not more than 1.0 mg / m3

2.3

Density of gas, kg / nm3

0,757

2.4

The lowest heat of combustion, kcal / nm3.

8500

3. Composition of source water

3.1

Total salt content, mg / l

370÷900

3.2

Total hardness, mg-eq / l

4,4÷14

3.3

Total alkalinity, mg-eq / l

1,8÷3,6

3.4

рН

Not available

3.5

The oxygen content, mg-eq / l

50

4. The need for spare parts.

4.1

Seperate units.

It is provided by the Supplier (manufacturer) for a period of the Guarantee period of operation - not less than 2 years.

4.2

Seperate parts.

It is provided by the Supplier (manufacturer) for a period of the Guarantee period of operation - not less than 2 years.

5. Need for auxiliary boiler equipment.

5.1

Heavy-blowing machines

yes

5.2

Deaerator

yes

5.3

Blowdown expansion tank

yes

5.4

Makeup demineralizer

yes

5.5

Smoke pipe

yes

Height - not less than 17 m

5.6

Feed pump

yes

2pcs (1operating,1reserve)

5.7

Availability of the printer.

yes

6. Requirement for boiler automation.

6.1

The volume of automation.

Advanced technologies with the use of automatic process control systems (ACS) without dispatch supervision within 24 hours.

Provide operator's place, workstation with operator panel providing visual display of boiler equipment status.

The data transmission system is wired.

Fire alarm system.

7. Power supply

7.1

Required power supply category

I

7.2

Required number of independent power supplies 3x380V, 50Hz

Two

7.3

Limit on the installed capacity of the power consumption of the boiler house, kW

Not more than 100

8. Special requirements

8.1

Boiler efficiensy, %

90-95

8.2

Guaranteed emissions.

The CO content is <63 mg / nm3

The content of NOx is <144 mg / nm3

8.3

Burner units

Continuously adjustable

8.4

Gas leaving temperature, оС

80-110

8.5

General security system.

A. General blowdown system

B. Self-diagnosed level security system

C. Self-diagnosed level security system

D. Automatic salt control system

8.6

Building of boiler room.

In block-modular design with all engineering communications, equipment for the site, technical documentation, etc.

8.7

Class of fire resistance of a boiler room.

Room category - G, fire resistance degree - II, fire hazard class - С0, С1, room characteristics according to environmental conditions and zone classification according to explosion hazard - Normal.

9. Additional conditions.

9.1

Necessity of installation and commissioning works.

yes

9.2

Necessity of delivery of the boiler room.

yes

9.3

Necessary conditions.

Water softener, salt storage area, salt erosion and salt pump.

9.4

Dimensions and weight of the boiler room.

Designed to fit in transport dimensions when transported on roads of general purpose.

9.5

Transportation.

The equipment and systems installed in the boiler room must withstand, according to GOST, the impact of transport shaking at a speed of 50 km / h on roads with asphalt concrete, 30 km / h on gravel and cobblestone roads, 15 km / h on unpaved roads.