Movable mixed-burning steam generating device

Abstract

The invention discloses a movable mixed-burning steam generating device which comprises a cylindrical barrel, a cover plate, a flame barrel combustion chamber, a water film cooling system, a gas atomization device and a monitoring system. The cylindrical barrel serves as a shell of the device, the cover plate is arranged at the air inlet end of the barrel, and the flame barrel combustion chamber, the water film cooling system, the gas atomization device and the monitoring system for high-temperature multi-purpose gas operation are respectively sequentially coaxially arranged on inner front portion of the barrel, the inner middle of the barrel, the inner rear portion of the barrel and on the barrel along the flow direction of gas. A fuel connecting pipe and high-pressure air connecting pipes are arranged on the cover plate. The flame barrel combustion chamber is arranged in the barrel in a dangling manner, an inner swirler and an outer swirler are arranged inside an inlet section of the head of a flame barrel, the inner swirler is disposed in the outer swirler, a premixing chamber used for premixing of fuel and air is arranged in the rear of the inner swirler, and the premixing chamber is of a structure which is restrained first and then expanded; a nozzle connected with the fuel connecting pipe is disposed in the inner swirler. The movable mixed-burning steam generating device has the advantages of high reliability, long service life, energy efficiency, reasonable and movable structure and the like.

Description

technical field [0001] The invention relates to a steam generating device, in particular to a steam generating device using fuel to directly heat water mixed with gas, in particular to a movable co-combustion steam generating device. Background technique [0002] In the construction of the national economy, there are many fields that need to use a large amount of steam to complete the corresponding work, but there is no special requirement for the purity of the steam itself, such as thermal recovery operations of heavy oil (heavy oil) and conventional oil fields, Carrier-borne aircraft take-off steam catapult, civil aircraft snow removal in winter, and many chemical industry operations all need to use a large amount of high-temperature and high-pressure steam that does not require high steam quality. The main way to generate high-temperature and high-pressure steam in my country at this stage is to establish a ground steam station to transport the steam to the working equipm...

AI Technical Summary

Problems solved by technology

[0003] 1) The utilization rate of heat is low. Most of the heat has been lost during the process of transportation in the pipeline system, and only about 10% of the heat is delivered to the working equipment. The energy utilization rate is low and the waste is serious

[0004] 2) The exhaust gas from the ground steam station not only takes away about 20% of the heat, but also produces a large amount of exhaust gas such as carbon dioxide and sulfur dioxide, causing air pollution

[0005] 3) The installation of the steam station boiler needs to build an installation foundation on the ground. Once the steam station boiler is established, it cannot be moved, and the manufacturing cost is high, and the whole set of equipment is huge

Since the heat-insulating bushing is directly scoured by high-temperature flames, the material properties must be very high to ensure normal combustion at a temperature level of about 2000°C, and there is cooling water outside the bushing, which makes the thermal stress level very high and affects the equipment. Life has a great impact, cooling water is easy to scale at high temperature, block the water channel, and easily cause equipment failure

The atomization area of ​​the equipment adopts a small hole structure, the flow field resistance is large, and the flow loss is relatively high

[0008] The patent document with the publication number CH102268984A discloses an atomization device for a composite heat carrier generator. The combustion chamber of the device is still in the boiler combustion mode in essence, and the head of the combustion chamber is adopted between the heat insulating liner and the liner. Cooling is carried out by passing cooling water intermittently, and the thermal stress of the equipment is large during operation, which affects the service life of the equipment

In addition, its cooling method determines that the flame temperature cannot be too high, and the combustion reaction speed is also limited, that is, its thermal efficiency will not be too high

This device improves the fuel atomizer, but the structure is too complicated

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