SI9400404A - Device for incineration of polluting gases - Google Patents

Abstract

Full combustion must be achieved temperatures above 800 degrees Celsius, long enough retention time and ignition of the entire cross section. The device consists of a combustion chamber (1) lined with fireproof lining (A) - hot zone, air exchanger (2) for preheating waste gas, and continuously controlled fan (3) for the supply of flue gases. With this system very much reduce energy consumption, temperature in combustion and the chamber remains high enough (above 800 degrees Celsius). Several are installed on the combustion chamber of low power burners (B) in one or two types (depending on the composition of the waste gas). These burners are positioned at an alpha angle with respect to the flow direction, and Beta angle relative to the axis of the combustion chamber. Z production of a hot zone combustion chamber and with installing more low power burners at an angle are basic advantages achieved: reaching the temperature above 800 degrees Fahrenheit in the combustion chamber (hot zone), extending the flue gas path, and thus increase in dwell time (installation of burners at an Alpha angle with respect to the flow direction and the Beta angle with respect to the axis of the combustion chamber), a more even intake heat (more low power burners), better mixing of the gases, which ensures more complete combustion (installation of angle burners), computer controlling the power of burners and thus reducing power consumption energy

Description

TECHNICAL FIELD

DEVICE FOR THE COMBUSTION OF POLLUTED GASES

The purpose of the device is incineration or incineration. purification of waste gases laden with organic compounds (organic solvents, stalts, oxygenated compounds, ...) and aerosols of these compounds resulting from a production process that may not be released into the environment. The content of inorganic particulate matter in the waste gas must be less than 15 mgm ³ .

DISPLAY OF THE PROBLEM SOLVED BY THE INVENTION AND STATE OF THE INVENTION

The problems that arise when burning polluted gases are:

- Ensure sufficient gas mixing (complete combustion)

- Provide a sufficiently long retention (reaction) time

- reaching a sufficiently high temperature in the combustion chamber

- burner power control

With the known solutions of the pollutant combustion plants, air preheating is achieved by a double-layer design of the device. The temperature in the device is max.700 ⁰ C and the holding time is 0.2-0.3 sec. One burner of higher power is used as the energy source.

The invention solves the problem by preheating the polluted gases in the air exchanger (2). The preheated gases are then led to the combustion chamber (1). In the combustion chamber (1). which is walled with fire retardant cladding (A) - hot zone - with the help of several gas burners (B) of lower power at an angle, we reach temperatures above 800 ° C and a holding time of up to 2 seconds. This is a condition for the waste gases to be completely burned or burned. that the emissions when leaving the chimney are within the permissible limits.

DESCRIPTION OF THE INVENTION

The flue gas combustion plant consists of a combustion chamber (1), an air exchanger (2), a water or oil exchanger (one or more), a ventilation fan, a chimney, a computer control, and appropriate channels for connection.

The combustion chamber (1) is lined on the inside with a refractory liner (A) - (hot zone). The coating absorbs thermal energy so that the temperature in the combustion chamber is always high enough (above 800 ⁰ C) in case of uneven gas delivery.

Multiple burners (B) of lower power are installed on the chamber in one or two types, depending on the composition of the waste gases. This provides the possibility of reducing the power of the burners (only the current number of burners is in operation - only all full-burners are operated at startup). The burners are mounted at an angle α with respect to the flow direction and an angle β with respect to the axis of the combustion chamber, which creates rotation of the gases in the combustion chamber. This results in better gas mixing, a longer gas path (hence a shorter combustion device), a longer dwell time, and a more even heat input across the section. Also, the load of fire retardant lining that lays the interior of the chamber is more even. The angle α is 15 to 30 and β is 10 to 30, depending on the type of material.

The air exchanger (2) can be of standard or special design, depending on the temperature, volume and composition of the exhaust gases.

The exchanger (oil, water or air) uses the remaining thermal energy to heat the medium, which is then used for the desired purpose. Exchangers can be of different standard designs.

The fan and chimney must provide some pressure in the device, and must be designed for temperatures between 150 and 300 ° C, depending on the technology.

The computer constantly monitors the input and output parameters and outputs them as needed.

Based on this information, the computer manages and controls the entire device.

Course of action:

The combustion chamber (1) is heated to the working temperature with gas burners (B). Only when the chamber is heated do we begin to supply the polluted gases by means of a continuously controlled fan (3) to the air exchanger. The heated polluted gases are then led to the combustion chamber (1), where at the temp. above 800 ° C burn. The resulting flue gases are then passed through an air exchanger (2), (a part of the flue gas thermal energy is used for preheating the polluted gases), oil and gas. water exchanger (this is where the rest of the energy is consumed eg to heat the thermool, hot water, steam ...), the fan into the chimney.

Claims (1)

PATENT APPLICATION ' A device for combustion of polluted gases is characterized by: - to solve the problem of combustion of polluted gases at temperatures above 800 ° C and a residence time above 1.5 sec. - that it consists of a combustion chamber (1) inside a refractory lining (A) - (hot zone) - has an adequate number of smaller burners (B) positioned at an angle α relative to the flow direction and an angle β relative to the axis of the combustion chamber - that the burners (B) are installed in one or two types (depending on the composition of the waste gas) - separate the air exchanger (2) for preheating the polluted gases from the combustion chamber - the supply of the polluted gases is controlled by a computer operating a continuously controlled fan (3)