Gas-fired boiler denitration energy saver utilizing latent heat of water film droplet condensing steam

Abstract

The invention discloses a gas-fired boiler denitration energy saver utilizing latent heat of water film droplet condensing steam. According to the gas-fired boiler denitration energy saver, the gas-fired boiler denitration energy saver is provided with a smoke exhaust and flow dividing center which is provided with assembled smoke dividing pipes and is arranged in the middle of a vertical cavity type whole wrapping sleeve, all the smoke dividing pipes in the center are internally and annularly provided with stainless steel gauze elements through vertical communicating pipe bundles, smoke dividing and water distribution plates, upwards penetrate through the upper top of the center, of the pipe bundles are connected into an upper container pipe plate, supporting plates, downwards penetrating through the bottom of the center, of the pipe bundles are connected into a lower container pipe plate so that a boiler can be closed to stop water feeding, smoke enters a smoke entering chamber below an upper container, water is sprayed, chlorine dioxide gas is added downwards, and clean smoke and condensed water retaining chlorine dioxide gas solubility are exhausted from a smoke exhaust chamber on a lower container.

Description

technical field [0001] The invention relates to a gas-fired boiler denitrification economizer using latent heat of water film droplets condensed steam, especially a smoke exhaust distribution center equipped with an assembled smoke distribution pipe. Each ring in the tube is lined with stainless steel gauze to vertically connect the tube bundle. The tube bundle passes through the smoke distribution plate on the top of the center and connects to the upper header tube plate, and passes through the bottom support plate of the center to connect to the lower header tube plate to close the boiler feed water. Gas-fired boiler denitration energy-saving device that enters the smoke through the smoke inlet chamber under the upper header and sprays water, and adds chlorine dioxide gas to the smoke exhaust chamber on the lower header to discharge clean smoke and retain chlorine oxide gas solubility condensed water . Background technique [0002] At present, the known boiler economizers...

AI Technical Summary

Problems solved by technology

[0002] At present, the known boiler economizers or economizers are all designed to simply reduce the flue gas temperature to properly utilize the sensible heat to achieve an energy saving rate of about 3%, and rarely utilize the condensation heat of the steam latent heat in the flue gas (mostly Most people mistakenly believe that "as long as the temperature of the flue gas is lowered below the 'dew point', it is 'condensation' and the latent heat is used efficiently", this kind of condensation is the efficient use of latent heat, even a high-tech), even if the compression is really used The compressor process condenses the steam and "transfers" the latent heat to the boiler (however, since the energy flow density of the working medium for "transferring heat energy" of the current compressor is limited to about 55°C, the heat capacity limit of the feed water process per ton of the boiler loaded in it The energy-saving index after removing the "heat exchange temperature difference of 20°C loss" can only be limited to 3-5%, and although the compressor process has an energy efficiency ratio of about 3.6, it consumes "about 38% efficiency" due to its energy consumption. Secondary energy has reduced its energy-saving rate to 1.1-1.9%, especially because it cannot be used locally...but it is obviously meaningless under the reference of "the cost cannot be recovered within the past 20 years"), relative to the latent heat loss of gas products "accounting for natural gas 14% of the total heat generation” is really not obvious enough to save energy

In addition, coal-to-gas conversion has become popular across the country. For natural gas boilers that are already in service across the country, the transformation of denitrification and latent heat recovery and utilization is still the primary task. For example, almost all boilers in Beijing have been converted from coal to gas. Emission pollution is still serious. Up to now, there has not been targeted denitrification energy-saving devices in the whole society. Everywhere is often replaced by replacements, expensive operating costs, and environmental protection at a loss, which seriously affects the implementation of energy-saving and environmental protection policies in Beijing and the health of the whole people.

Images