RU79328U1 - GAS-GENERATING-PYROLYSIS BOILER - Google Patents

Abstract

The gas-generating pyrolysis heating boiler consists of a water circuit 5 covering a two-chamber furnace connected by an opening d = 160 mm, a first generation chamber 8, which serves to burn carbon-containing raw materials, and a second chamber, a combustion chamber 6, which serves to burn CO fuel to CO. The water boiler is equipped with a water-cooled loading door 10 with a supercharged pipe mounted in it, which ensures stable combustion of fuel in the center of the combustion chamber. The air is taken in for oxidation of CO with the help of intake air pipes — air intakes 9. The proposed gas-pyrolysis heating boiler does not need a grate, and the ash accumulator serves as a heat accumulator for igniting the next batch of fuel, the percentage of which does not exceed 1-2% of the mass of fuel . Steam (steam generator 1) is generated in the water circuit of generation chamber 8, which is fed into the afterburner, and an evaporator 5 is mounted in the afterburner 6, which controls the CO afterburning rate. Inside the afterburner, a chimney 4 is welded in, increasing its length and, accordingly, taking heat from the combusted gas exiting through the chimney 4 and then the smoke through the adjustable gate leaves the chimney 3 into the environment with negligible emissions.

Description

The utility model relates to heat engineering and can be used in devices for heating water.

Known hot water boilers and a gas recirculation system for the pyrolysis of a charcoal furnace [SU No. 370418, No. 832264, RU No. 2207364].

Known hot water boiler [SU No. 370418], comprising a body equipped with a water jacket, in which a furnace with a door, a window and a blowing chamber are located, a transverse screen connected by water to the shirt and forming a convective duct connected to the outlet with an exhaust pipe.

However, the known hot water boiler does not allow to maximize heat transfer per unit of product burned.

Known hot water boiler [SU No. 832264], comprising a body equipped with a water jacket, in which a furnace with a door, a window and a blower chamber are located, as well as a transverse screen connected by water to the jacket and forming a convective duct connected to the exhaust outlet branch pipe. In this boiler, a longitudinal screen is additionally installed, the water cavity of which is in communication with the corresponding cavities of the shirt and the transverse screen. Thus, in the described boiler, the heating surface is partially increased.

However, in these boilers it is impossible to regulate the mode of their operation due to the fact that the reflectors are made rigidly fixed.

The closest in technical essence to the proposed solution is a system of recirculation of pyrolysis gases of a charcoal furnace [RU No. 2207364], consisting of a smoke exhaust, nozzles for the intake of the vapor-gas mixture and flue gases from the chamber, nozzles for ejecting the vapor-gas mixture and flue gases into the chamber, where an open container with pyrolysis raw materials.

A disadvantage of the known device is the location of the nozzles of the intake of hot flue gas, mixed with recirculated pyrolysis gases, at the bottom of the chamber, with the emission of these gases through the gas outlet pipes at the chamber vault, which creates a counterflow of gas flows in the chamber and reduces the time and completeness of gas interaction, coming from the furnace, recirculated gases and pyrolysis raw materials.

The gas-generating pyrolysis heating boiler consists of a water circuit 5, covering a two-chamber fire chamber connected by an opening d = 160 mm, a first generation chamber 8, which serves to burn carbon-containing raw materials, and a second chamber, a combustion chamber 6, which serves to burn CO fuel to CO ₂ .

The water boiler is equipped with a water-cooled loading door 10 with a supercharged pipe mounted in it, which ensures stable combustion of fuel in the center of the combustion chamber. Air intake for CO oxidation is carried out using intake air pipes - air intakes 9.

The proposed gas-fired pyrolysis boiler does not need a grate, and an ash pan, the percentage of which does not exceed 1-2% of the mass of fuel, is the heat accumulator for igniting the next batch of fuel. In the water circuit of the generation chamber 8, steam is generated (steam generator 1) which is supplied to the afterburner, and an evaporator 5 is mounted in the afterburner 6 to control the CO afterburning rate. Inside the afterburner, a chimney 4 is welded in, increasing its length and, accordingly, taking heat from the combusted gas exiting through the chimney 4 and then the smoke through the adjustable gate leaves the chimney 3 into the environment with negligible emissions.

The gas-generating-pyrolysis heating boiler is made in a rounded shape, which determines the uniformity of the surface temperature and the uniformity of heating of the coolant, which serves to increase the resource of the boiler. Protection against burnout of the inner walls occurs with the help of a water circuit around the entire circumference of the boiler. The pipes providing air and steam are protected from burning by a steam-water jacket. The door of the combustion chamber is provided with a flow-through cooling system and is connected to a common water circuit using dirite hoses.

In addition, the gas-pyrolysis heating boiler gives the following advantages:

- very high thermal efficiency,

- long work on one tab of fuel,

- lack of harmful emissions during the work,

- ease of maintenance, durability and non-criticality to the type of fuel.

- the amount of ash when working on solid fuel does not exceed 1%.

The figures show:

1 - steam generator,

2 - evaporator

3 - chimney,

4 - chimney

5 - water circuit,

6 - afterburning chamber,

7 - device boost,

8 - generation chamber (boiler furnace),

9 - air intake

10 - a cooled door.

Claims (1)

The gas-generating pyrolysis heating boiler, which consists of a gas recirculation system including a combustion chamber (pyrolysis) with a chimney and chimney, air intake pipes and steam-gas mixture ejection from the steam generator and the generation chamber, characterized in that the round shape of the boiler determines the uniformity of the surface temperature and heat carrier, which serves to increase the resource of the product, and protection against burnout of the internal walls of the boiler - due to heat extraction by the water circuit along the perimeter, and pipes providing air and steam , protected from burning by a steam jacket.