Vertical inner-container-free energy-saving environment-friendly boiler

Abstract

The invention discloses a vertical inner-container-free energy-saving environment-friendly boiler, which mainly comprises a combustion chamber, a group of annular tubes arranged on the top of the combustion chamber, a group of water-cooling tubes and a steam pocket, wherein the combustion chamber is partitioned into a hearth structure for combustion for multiple times, so that fuels can be combusted for multiple times until the fuels are combusted totally and heat releasing maximization can be realized; and when passing through a multi-stroke smoke channel partitioned by a group of water-cooling tubes and a group of annular tubes, high temperature smoke can fully exchange heat with water in the water-cooling tubes, the water can absorb the heat of the smoke to the maximum to be gasified into steam and the smoke subjected to heat absorption and temperature reduction turns to light white low-temperature pollution-free tail gas, so the safety standard emission is realized. By the vertical inner-container-free boiler with the structure, a stress state of the vertical boiler can be improved and the bearing capacity of the boiler can be enhanced; furthermore, steel for making the boilercan be saved by over 50 percent; and the vertical inner-container-free energy-saving environment-friendly boiler has the outstanding advantages of low manufacturing cost, high safety performance, lowpollution load and high heat efficiency and has an extremely good market prospect.

Description

Technical field: [0001] The invention relates to medium and low pressure boiler equipment, in particular to a vertical gallbladderless energy-saving and environment-friendly boiler, which belongs to the technical field of boiler manufacturing and energy-saving and environment-friendly engineering. Background technique: [0002] We know that boilers, as a kind of energy conversion thermal equipment widely used in many production fields, play a very important supporting role in promoting the rapid development of my country's national economy. As far as the basic structure of the boiler is concerned, it is composed of two parts: the "furnace" as the fuel combustion heat release equipment and the "pot" as the heat absorption equipment for the working medium. The index for comprehensively evaluating the economic status of boiler operation is thermal efficiency, and the most effective technical measures to improve boiler thermal efficiency and reduce operating costs are: first, im...

AI Technical Summary

Problems solved by technology

However, we do not need to deny that this kind of vertical boiler with too simple structure also has extremely serious defects in actual operation. The cavity is used as a combustion chamber. The poor structural design of this combustion chamber will cause serious concentration of thermal stress in the furnace and reduce the pressure bearing capacity. A little carelessness in actual operation can easily lead to major equipment accidents such as furnace burst and hurt people.

Second, its low thermal efficiency leads to higher steam production costs. The main reason is that the fuel has not been completely burned in the combustion chamber, that is, it is directly drawn out by the sky tube and directly discharged to the outside, and the heat absorption capacity of the horizontal water tube structure is poor. This bad smoke exhaust structure design will cause the exhaust gas temperature to be too high, which will cause a lot of heat energy to be lost and wasted in vain with the discharge of high-temperature flue gas. This is why the thermal efficiency of the current vertical boiler is low and the steam production The main reason for the high cost

Third. It pollutes the environment seriously. The flue gas structure flow of the current vertical boiler is extremely simple, the stroke for the effective heat exchange of the flue gas is extremely short, and there are many fuel particles mixed in the flue gas that have not been completely burned. It is difficult for the particles to settle and separate by themselves in a short journey, which is the main reason for the high concentration of smoke and dust in the discharged flue gas, the large number of fuel particles, the high blackness and the pollution of the environment.

In summary, the main defects in use listed above are all due to the unscientific and reasonable structural design of the current vertical boilers.

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