CN2695794Y - Negative pressure environmental protection boiler - Google Patents

Abstract

The utility model discloses a negative pressure environmental protection boiler, a boiler container of the boiler, and an upright heat guide pipe and a medium in an inner cavity of a suspension type endoseptum have negative pressure operation in the closed state. A heat exchanging pipe is arranged in the boiler container which supplies heat toward a heating system through a water inlet and a water outlet of the boiler, a steam generator arranged at a gas outlet of the boiler is communicated with a combustion supporting atomizer under a fire grate and a dust removing atomizer in a flue, a flue port is extended under a water surface of a smoke-removing sulphur remover, wherein, the top of which is communicated with an exhaust fan at the bottom of a chimney. The boiler has good combustion effect, since the filling amount of the medium is only about 50% and the utility model has negative pressure operation, and the heating speed is higher than a conventional boiler by 60%. The smoke gas discharge of the utility model discharging seven kinds of pollutant is far lower than the fume discharge concentration standard, such as smoke dust in smoke gas, smoke gas blackness, carbon monoxide, sulfur dioxide, nitrogen oxide, hydrochloric acid, ammonia, etc.

Description

The negative pressure and environment protection boiler

One, technical field: it is the environment-friendly type heating boiler of main fuel with the coal that the utility model relates to a kind of.

Two, background technology: be in the boiler of main fuel with the coal, people are for energy savings and reduce pollution, descended many time, and various energy-saving environmental protection boilers are arranged.Such as the employing that has repeatedly return air and repeatedly turn over the fire method to reach energy-saving effect, the method that adopts multistage dedusting and water spray aspect vent gas treatment that has is to reach the standard of environmental requirement.These boilers are owing to increased some auxiliary bodies and caused bulkyly, and it is many to consume steel, the consumption of increase electric power the simultaneously energy and water resource, and energy-conservation and environment protecting improves, but still has very big potentiality to dig.

Three, summary of the invention: in order to overcome problems of the prior art, the utility model provides a kind of negative pressure and environment protection boiler, because the operation boiler energy-saving is respond well energy saving and environment friendly boiler significantly and can eliminate flue dust and pernicious gas in the tail gas under condition of negative pressure.The technical scheme of this boiler is such: the flue composition heating surface that communicates with the inner chamber of upright heat pipe, suspension type endoseptum, the boiler arched top covers and is provided with the medium reserve tank, a negative pressure controller that is installed on the boiler top cover is arranged in this reserve tank, and case has bleeder pipe on the top.Be equipped with in flue around some groups of heat exchanger tubes between the inside and outside wall, these heat exchanger tube lower ends are communicated with water inlet, and the upper end is communicated with delivery port.The exhanst gas outlet of boiler is communicated with steam generator, and two steam pipes are drawn in the steam generator top, and a steam pipe leads to the combustion-supporting atomizer below the fire grate, and another steam pipe leads to the dedusting atomizer in the flue.Flue stretches into downwards below the water surface of smoke elimination desulfurizing device, and the top of smoke elimination desulfurizing device communicates with the air exhauster of chimney bottom.This boiler moves under negative pressure state, and the boiling point of medium reduces, and combustion-supporting atomizer makes significantly fuel savings of full combustion of fuel, cuts down the consumption of energy.

The flue gas of flue is through the effect of dedusting atomizer and smoke elimination desulfurizing device, thoroughly remove the dust granule in the flue gas and make pernicious gas such as sulfur dioxide etc. soluble in water, the flue gas of discharge is purified fully, environment protecting is very good.

Medium in the boiler heating surface is closed operation, and it is minimum that medium once adds the back loss, has therefore reduced links such as chemical examination and water treatment, and boiler do not have oxygen candle, non-scaling, and not blowdown reduces operating cost, has prolonged boiler life.

Four, description of drawings: Fig. 1 is the structural representation of negative pressure and environment protection boiler.Fig. 2 is the heat exchanger tube scheme of installation.Fig. 3 is a negative pressure and environment protection boiler vertical view.Fig. 4 is the atomizer schematic diagram.

Five, the specific embodiment: be described further below in conjunction with accompanying drawing: negative pressure and environment protection boiler shown in Figure 1, when work, whole heating surface is pumped into negative pressure, it is to move under the state of sealing.The flue (3) that boiler jacket and inwall are formed and the upright heat pipe (1) on furnace chamber top, medium addition in the inner chamber of suspension type endoseptum (4) is about about 50% of total measurement (volume), vapor space is left on top, because the medium addition is few, again under condition of negative pressure, boiling point reduces, and programming rate is accelerated, and comparing with plain cylindrical furnace heats up accelerates more than 60%.Have one to be installed in negative pressure controller (5) meeting automatic deflation when flue inner vapor pressure surpasses 1 atmospheric pressure that arched top covers in the medium reserve tank (6) at boiler top, gas is outside bleeder pipe (7) effusion system.The heating intensity that at this moment should reduce the combustion chamber guarantees negative pressure state in the flue.Because the combustion intensity in the combustion chamber is low than conventional boiler, so energy-saving effect is obvious.The medium of medium reserve tank is used for the dielectric loss in the replenishment system.Around some groups of heat exchanger tubes (2), their lower port connect water inlet between the body of heater inside and outside wall in flue (3), and upper port connects delivery port.The heat of their absorbing mediums is with the hot water supply heating system.The outlet flue top of boiler is provided with steam generator (8), it is a water vapor generation device independently, flue gas heat is heated into steam with the water in the water jacket, draw from the steam generator top, one of them pipeline leads to the combustion-supporting atomizer (15) below the fire grate, and the burning of the taper spray water steam energy enhanced fuel of its ejection makes fuel combustion complete, do not have black wood charcoal and discharge, thus energy savings.Another pipeline leads to the dedusting atomizer (10) in the flue (9), and it is last along falling in water that its multistage vapor spray makes in the flue gas dust granule be adsorbed on the aqueous vapor particulate.As shown in Figure 4, the cone valve (17) that combustion-supporting atomizer (15) and dedusting atomizer (10) are sat (18) and pointed end by the cylindrical bottom of steam pipe communication with cavity is formed, the conical surface of valve and base are suitable for reading to be sealed and matched, and the cone valve lower end connects a SDeflector.

Flue (9) end is provided with smoke elimination desulfurizing device (11), and its cylindrical cavity Lower Half is a water, and water surface elevation is controlled by water system, under the conical bottom blowoff valve is arranged, regularly effluent sewerage.Flue (9) end stretches into downwards below the water surface, and flue gas is arranged to water from many smoke apertures (14) of flue end, to increase the contact area of flue gas and water.Dust particle in the flue gas and pernicious gas, as sedimentation such as sulfur dioxide or be dissolved in the water, behind the flue gas effusion water surface that is cleaned by air exhauster (12) row of taking away of chimney (13) bottom to atmosphere.According to detection, enter seven kinds of polluters such as flue dust in the flue gas, blackness of exhaustion, carbon monoxide, sulfur dioxide, nitrogen oxide, hydrogen chloride, ammonia well below the smoke emissioning concentration standard.

A smoke elimination desulfurizing device (11) is installed is removed the existing good effect of flue dust and pernicious gas aspect,, in flue gas emission, set up what smoke elimination desulfurizing device, be expected flue dust and pernicious gas are thoroughly eliminated if special environmental protection demand is arranged.

Claims (3)

1, the negative pressure and environment protection boiler partly is made up of shell, flue, fire grate, heating surface, chimney etc., it is characterized in that: the flue (3) that boiler jacket and inwall the are formed composition heating surface that communicates with the upright inner chamber of heat pipe (1) suspension type endoseptum (4), the arc-shaped pot furnace top cover is provided with medium reserve tank (6), has in the reserve tank on negative pressure controller (5) the reserve tank top that is installed on the boiler top cover bleeder pipe (7) is arranged; Be equipped with in flue (3) around the some groups of heat exchanger tubes (2) between the inside and outside wall, these heat exchanger tube lower ends are communicated with water inlet, and the upper end is communicated with delivery port; The exhanst gas outlet of boiler is communicated with steam generator (8), and two steam pipes are drawn in its top, and a steam pipe leads to the combustion-supporting atomizer (15) below the fire grate (16), and another steam pipe leads to the dedusting atomizer (10) in the flue (9); Flue (9) is communicated with smoke elimination desulfurizing device (11), Lower Half is a water in the barrel-type casing of smoke elimination desulfurizing device, blowoff valve is arranged on the conical bottom, and flue (9) end stretches into downwards below the water surface of smoke elimination desulfurizing device (11), and the top of smoke elimination desulfurizing device communicates with the air exhauster (12) of chimney (13) bottom.

2, negative pressure and environment protection boiler as claimed in claim 1 is characterized in that: flue (9) stretches into downwards on the walling of flue of the water surface with the lower part of smoke elimination desulfurizing device (11) many smoke apertures (14).

3, balanced draft boiler as claimed in claim 1 is characterized in that: combustion-supporting atomizer (15) and dedusting atomizer (10) are that the cone valve (17) of a cylindrical base by the steam pipe communication with cavity (18) and pointed end is formed.The conical surface of valve and base are suitable for reading to be sealed and matched, and the cone valve bottom connects a SDeflector.

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