Oil field steam filling boiler of circulation fluidized bed using water coal slurry as fuel

A technology of circulating fluidized bed and steam injection boiler, which is applied in the direction of fluidized bed combustion equipment, the combustion of lump fuel and liquid fuel, and the fuel burned in the molten state to achieve the effect of suppressing emissions
CN1276215CInactive Publication Date: 2006-09-20SHENYANG DAVID ENVIRONMENT PROTECTION & ENERGY SAVING EQUIP LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHENYANG DAVID ENVIRONMENT PROTECTION & ENERGY SAVING EQUIP LTD
Publication Date
2006-09-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

The oil well gas injecting boiler has screw pump in pressure of 0.2-0.4 MPa to supply fuel from the upper part of the boiler, single steam drum in naturally circulating mode to obtain high pressure steam of 17.5-21 MPa; quartzite and limestone powder as fuidizing medium for low multiplying factor circulation; and power amount of limestone powder for clean burning at temperature of 850-950 deg.c. The boiler of the present invention has water cooling furnace wall, coated heat resistant and corrosion resistant refractory material and sprayed heat resistant and wear resistant Ni-Cr alloy, pipe type backwards bent boiler top, coal economizer of ribbed spiral pipes, cyclonic separator with wear resistant material, water cooling wall with inner thread pipe, high temp alloy steel material in high temperature and high pressure sections, welded support frame structure, flexible 3D expanding section in important joint part, and hydrostats.
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Description

technical field

[0001] According to the International Patent Classification Table, the present invention belongs to the technical field of fluidized bed combustion equipment in fluid fuel combustion equipment, and particularly relates to a circulating fluidized bed boiler with a rated evaporation capacity of 7-25 tons per hour using coal water slurry as fuel. It can generate high-pressure steam of 17.5-21MPa, which is mainly used for steam injection in oil fields. Background technique

[0002] After many years of exploitation of the oil stored underground in the oil field, high-temperature, high-pressure steam is usually injected into the ground to increase production, or to extract oil that cannot be extracted by other methods. At present, steam injection boilers in oilfields use oil or natural gas as energy sources, and the operating costs are high. Based on a medium-sized steam boiler with a pressure of 17.5MPa and 20 tons per hour, 66.5kg of fuel oil is consumed for pro...

Claims

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