Low-heat value gas combustion device

A technology of low calorific value coal gas and coal gas, which is applied in the direction of fuel burning in a molten state, combustion method, combustion type, etc., can solve problems such as insufficient utilization, blockage of combustion nozzles, and coking of the furnace body, so as to avoid excessive local temperature and increase Participate in combustion and prevent clogging of burners
CN101526212BInactive Publication Date: 2011-02-16中冶葫芦岛有色金属集团有限公司
0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
中冶葫芦岛有色金属集团有限公司
Publication Date
2011-02-16
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
Patent Text Reader

Abstract

The invention relates to a low-heat value gas combustion utilizing method. Low-heat value gas is supplied to a dust separator by a gas input pipeline, a gas valve, an emptying device, a gas stop control valve and a gas-distributing valve; dust and gas are separated, and separated suspended substances are discharged by a floating dust sinking discharge valve; the obtained pure low-heat value gas is supplied to a combustor arranged in a circulating fluidized bed boiler by a control gas source connecting valve and a gas supply valve for combustion and heat supply; and gas ducts which are respectively led from the gas-distributing valve, the control gas source connecting valve and the gas supply valve are communicated with an automatic gas flow control device for adjusting and controlling thegas flow amounts of different routes. The method can prevent a combustion nozzle from being blocked, uniformizes heated surfaces, can avoid a partial overhigh temperature phenomenon, achieves the effect of together burning the low-heat value gas with general fuel and is suitable for being used in the field utilizing the combustion and the heat of the low-heat value gas.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a device for co-combusting low calorific value coal gas in a circulating fluidized bed boiler and making full use of its heat, in particular to a device for burning low calorific value coal gas. Background technique

[0002] Low calorific value gas is produced in the process of nonferrous metallurgy production, and its calorific value is 800-1000kcal / Nm 3 . At present, the domestic non-ferrous metallurgical enterprises have the following devices for processing low calorific value gas: a certain enterprise collects the part of low calorific value gas generated by ISP into φ=800mm pipeline (P=5600Pa t<40℃ dust content<40mg / Nm 3 ), the pipes are connected to the burners and enter the three steam power boilers of the self-provided power plant for mixed combustion; the second device is used in the processes of concentrate drying kiln, coke preheater, hot blast stove, etc., and the remaining part is exhausted Empty; the third...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More