Treatment apparatus and method of high-boron high-fluoride flue gas for glass melting furnaces

A glass melting furnace and flue gas treatment technology, which is applied in the direction of waste heat treatment, energy efficiency improvement, process efficiency improvement, etc., can solve the problems of energy waste, environmental pollution, etc., and achieve the effects of cost-effectiveness, energy saving, and simple operation

Inactive Publication Date: 2015-05-20
LUOYANG INST OF SCI & TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0010] In order to solve the problem of energy waste and environmental pollution caused by the high boron and high fluorine flue gas of the glass melting furnace existing in the above technology, the present invention provides a glass melting furnace high boron and high fluorine flue gas treatment device and method, the method The combination process of "waste heat boiler cooling + dry bo

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  • Treatment apparatus and method of high-boron high-fluoride flue gas for glass melting furnaces
  • Treatment apparatus and method of high-boron high-fluoride flue gas for glass melting furnaces
  • Treatment apparatus and method of high-boron high-fluoride flue gas for glass melting furnaces

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Embodiment approach

[0051] Scale The annual output of pharmaceutical glass tubes is 50,000 tons, which consists of two oxygen-enriched combustion glass melting furnace production lines, and a single production line can produce 70 tons of glass solution per day. Coke oven flue gas (or natural gas) is used as fuel, and the gas consumption is 600 m 3 / h, the supporting gas is high-purity oxygen, 92% oxygen and 7% argon, and the oxygen excess coefficient is 1.2. Flue gas volume at glass melting furnace outlet: 2250Nm 3 / h; flue gas outlet temperature: 1200~1300°C; dust repose angle: dynamic repose angle 45°, static repose angle 60°; flue gas dust concentration: dust 1.4—1.7g / Nm 3 ;B 2 o 3 : 0.6—0.8g / Nm 3 ; Flue gas humidity (volume ratio): 55%.

[0052] Table 1 Composition of flue gas from oxy-fuel glass kiln (unit: %)

[0053]

[0054] Table 2 Composition of particles in flue gas of oxy-fuel glass kiln (unit: %)

[0055]

[0056] The energy consumption is as follows: the daily consumpti...

Embodiment approach 1

[0058] Embodiment 1: Power generation with waste heat from flue gas from a glass melting furnace. The flue gas from the glass melting furnace enters the waste heat boiler, and the flue gas from the exit of the waste heat boiler enters the reactor. The waste heat power generation system includes two waste heat boilers and a set of condensing steam turbine generator sets. The installed capacity of the steam turbine is 0.5MW. The waste heat boiler produces saturated steam at 1.40MPa-320℃. Matching with the waste heat exchanger, a condensing steam turbine generator set is set. Heat pipe waste heat boiler inlet exhaust gas parameters: 3500Nm3 / h-900℃, inlet exhaust gas dust concentration <100g / Nm3, outlet exhaust gas temperature ≥300℃, water supply parameters 2t / h-45℃, superheated steam output 1t / h, P= 1.4MPa-320℃, the total air leakage of the boiler is ≤1%, and the layout is in the open air. The rated power of the condensing steam turbine is 0.5MW, and the rated speed is 3000r / m...

Embodiment approach 2

[0062] Embodiment 2: Hot water or heating is provided by waste heat of flue gas from a glass melting furnace. The flue gas from the glass melting furnace enters the waste heat boiler, and the flue gas from the exit of the waste heat boiler enters the reactor. The waste heat hot water and heating system includes 2 waste heat boilers and 2 sets of chemical water production facilities, with a water production capacity of 0.3t / h, and a comprehensive water purification device with a water production capacity of 12t / h. Through the waste heat hot water or heating system, the energy utilization rate is increased by 18%, and the comprehensive energy consumption of the enterprise is reduced.

[0063] The waste heat boiler is connected to the reactor by a round steel air duct. The average particle size is preferably 20~50μm, and the calcium powder prepared in proportion is stored in the calcium powder bin. After being pressurized by the single bin pump, it is fully mixed with the flue g...

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Abstract

The invention discloses a treatment apparatus and method of high-boron high-fluoride flue gas for glass melting furnaces. The apparatus comprises the glass melting furnace communicated with a waste heat boiler, an air cooler and the waste heat boiler. The air outlet of the waste heat boiler is communicated with an air inlet of a reaction column. The side of the reaction column is provided with a bin used for adding calcium powder. An atomizer atomizes water and feeds the water into the reaction column for reaction between the flue gas and the calcium powder; the reaction column is connected with a dust collector; the dust collector is communicated with an ash chamber used for discharging waste ash; an air outlet of the dust collector is connected with a fan; the fan provides power to convey the dedusted flue gas from the dust collector to a chimney. The combined process of waste heat boiler cooling, dry boron-removing and fluoride-removing reaction columns and bag dust collectors is utilized, waste heat of the glue gas from the glass melting furnace is make effective use, the temperature of the flue gas is decreased to a range required by a following treatment system, boride and fluoride in the flue gas are efficiently removed, the concentration of pollutants in emitted waste gas meets the emission standard, and environment friendliness is enhanced.

Description

technical field [0001] The invention relates to the field of energy-saving technological transformation, in particular to a device and method for treating flue gas with high boron and high fluorine in a glass melting furnace. Background technique [0002] With the development of industrial technology and social progress, it has become the consensus of glass enterprises to attach importance to energy conservation and environmental protection. For this reason, the glass industry has made various efforts in energy conservation. Oxygen-enriched combustion of natural gas has the dual advantages of energy saving and environmental protection, and the technology of oxygen-enriched natural gas combustion has gradually been widely used in the glass industry. The glass melting furnace adopts natural gas oxygen-enriched combustion. For every 1% increase in oxygen content, the theoretical combustion temperature increases by about 60°C, and the flue gas volume decreases by about 3% on ave...

Claims

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Application Information

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IPC IPC(8): F27D17/00
CPCY02P10/25
Inventor 王锐雷建
Owner LUOYANG INST OF SCI & TECH
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