Ordinary-pressure direct-heating boiler integrating opening type heat exchanger and filled tower

Abstract

The invention relates to an ordinary-pressure direct-heating boiler integrating an opening type heat exchanger and a filled tower. The ordinary-pressure direct-heating boiler integrating the opening type heat exchanger and the filled tower adopts natural gases and other purified gases as raw materials. A main body is formed by a frequency conversion burner, a water tank, a combustion chamber, a heat exchanger bundle, a discharged air collecting cylinder, a filler barrier, a filler, a shower pipe group, a condenser pipe group, a wire mesh demister, a chimney, a water inlet pipe, a water outlet pipe, a temperature monitoring probe, a water level monitoring probe, a water flowmeter and the like. According to a burned smoke and hydrothermal exchange sequence, heat exchange tube heat exchange, filler direct mass and heat transfer and condensation heat exchange are sequentially carried out, and the three parts are of independent process structures. According to the boiler provided by the invention, an energy-saving effect is remarkable, the heat exchange efficiency can achieve 95 percent to 98 percent, and the exhaust gas outlet temperature is ranged from 20 to 60 DEG C; and the boiler is energy-saving and environmentally-friendly in structure and operation, has controllability and usability in whole, has wide adaptability to water quality and combustion quality, and is safe and reliable.

Description

technical field [0001] The invention relates to the field of boiler equipment, in particular to an atmospheric pressure direct-heating boiler combining an open heat exchanger and a packed tower. Background technique [0002] Existing gas-fired hot water boilers can be divided into shell-and-tube boilers and direct-fired boilers according to heat transfer and mass transfer methods. [0003] The shell and tube boiler transfers heat to the incoming water through the combustion tube and the heat exchange tube bundle, increases the water temperature and outputs hot water. This kind of hot water boiler is characterized by direct heat transfer and large heat capacity, but it is prone to scaling on the tube wall. After scaling, the thermal resistance of the tube wall increases and the heat exchange efficiency decreases. In addition, this kind of hot water boiler will generate a large amount of steam. Since the steam cannot enter the heating system and can only be discharged, it wil...

AI Technical Summary

Problems solved by technology

First of all, the distance between the combustion tube and the chimney is too small, and the high temperature of the combustion tube causes a large amount of steam to be generated outside the tube wall and is directly discharged from the chimney, taking away a large amount of heat energy and causing energy loss; secondly, the combustion tube and the packing are gathered together, occupying the packing space and It is not conducive to the distribution of incoming water. Once the amount of incoming water decreases sharply, it will cause local dry burning and bring danger to the equipment body; secondly, because the burner and chimney are located on the upper part of the equipment and the burner is in the center, the area at the lower end of the chimney is too narrow , which is not conducive to flue gas emission; when the combustion tube is placed vertically, since the combustion tube needs a certain length to ensure the full combustion of the flame, it will inevitably lead to an increase in the overall height of the equipment. If the height of the boiler room is not high enough, it is difficult to install; When it is less or even stopped, the burner can only stop to avoid dry burning, and the cold air purge when restarting will take away a lot of heat energy

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