CN208124267U - High efficiency boiler saves coal measures system - Google Patents

Abstract

The utility model relates to field of boilers, i.e. high efficiency boiler saves coal measures system.It includes the water jacket flue connecting with boiler nozzle, the setting of water jacket flue slope, water jacket flue connection economizer, economizer connection boiler desulfurization tower；The economizer includes the heat exchange pipe in cabinet channel, and adjacent comb mutually staggers, and heat exchange pipe water inlet end has inlet water divider, and there is water separator out in heat exchange pipe water outlet.The present apparatus not only can be reduced flue-gas temperature, greatly extend the service life of dust-removal cloth-bag, be removed part dust particles with emission reduction, reduce the pressure of later process sack cleaner, and more obvious effect is energy conservation.The double benefit for having energy conservation and emission reduction.Structurally reasonable, the thermal efficiency is high.

Description

High efficiency boiler saves coal measures system

Technical field

The utility model relates to field of boilers, i.e. high efficiency boiler saves coal measures system.

Background technique

In the prior art, economizer is mounted to boiler back end ductwork lower part for recycling one kind of discharged fume waste heat Device reduces the exhaust gas temperature of flue gas, saves the energy, improve efficiency since it absorbs the heat of high-temperature flue gas, so Referred to as economizer.In the boiler of existing operation, some is mounted with economizer.Both make to be mounted with economizer, structure is also excessively Simply, efficiency is very low.One of problem, heat exchanger tube diameter is excessively thick, and mostly between 60-100mm, diameter is thicker, heat-transfer surface Product is smaller.The two of problem, as soon as there was only a heat exchanger tube inside economizer, snakelike several circles of coiling finish.Boiler export flue gas changes Temperature is at 300-500 DEG C before heat, and mostly at 200-300 DEG C or so, minimum also only exists the flue gas come out from existing economizer 150 DEG C or more.150 DEG C of flue gases enter the cloth bag that dedusting can be seriously damaged in sack cleaner（Non-woven fabrics material）, the service life is not By 1 year, longest was less than 2 years.

Utility model content

The purpose of this utility model is in view of the above deficiencies and provides a kind of high efficiency boiler province coal measures system, and heat transfer effect mentions Height, the flue-gas temperature come out from economizer do not damage the cloth bag of dedusting.

The technical solution of the utility model is：High efficiency boiler save coal measures system, it is characterised in that including with boiler smoke The water jacket flue of mouth connection, the setting of water jacket flue slope, water jacket flue connect economizer, and water jacket flue minimum point sets water inlet pipe Water at low temperature is sent by water pump in road, and water jacket flue highest point sets out waterpipe, exports the hot water heated by flue gas；Among economizer Equipped with more set heat exchange pipes, adjacent heat exchange comb is mutually staggered, and one side lower part of economizer has inlet water divider, and another upper lateral part has Water separator out, every set heat exchange pipe water inlet end are connect with inlet water divider, and heat exchange pipe water outlet is connect with water separator out； Economizer connects boiler desulfurization tower；The economizer bottom of box has ash bucket outlet.

In above scheme, there are flange form ash removing openings for water jacket flue end lower part.First row at economizer smoke inlet Securely weld round bar in heat exchange pipe windward side.

The utility model has the advantages that：1, the present apparatus not only can reduce flue-gas temperature with emission reduction, greatly extension dust removing cloth The service life of bag removes part dust particles, reduces the pressure of later process sack cleaner, and more obvious effect is energy conservation.Tool The double benefit of standby energy conservation and emission reduction.2, structurally reasonable, the thermal efficiency is high.3, efficiently saving coal measures system not only can reduce cigarette with emission reduction Temperature degree greatly extends the service life of dust-removal cloth-bag, removes part dust particles, reduces the pressure of later process sack cleaner Power, more obvious effect are energy conservations.By taking the boiler of 6 tons of rural area as an example, matched water jacket flue and cigarette device, per hour Inlet and outlet water are saved Amount is 4 tons, and intaking is 8 DEG C of underground water, is discharged 50 DEG C, part hot water can be injected boiler by summer, and saving is coal-fired, or be production Required offer hot water.Winter, these hot water were for more than 3000 square metres of building heating.Have it can be seen that efficiently saving cigarette system The double benefit of energy conservation and emission reduction.

The embodiments of the present invention is described in further detail below in conjunction with attached drawing.

Detailed description of the invention

Fig. 1 is the utility model structure diagram.

Fig. 2 is water jacket flue structure schematic diagram.

Fig. 3 is heat exchange pipe structure diagram.

Fig. 4 is coal economizer structure schematic diagram.

Specific embodiment

Referring to Fig. 1-4, parts title is as follows：Water jacket flue 1, economizer 2, heat exchange pipe 3, inlet water divider 4, out Water separator 5, ash bucket outlet 6, ash removing opening 7, round bar 8, water inlet line 9, outlet conduit 10, safety valve 11, economizer safety Valve 12.

Referring to Fig. 1,2, high efficiency boiler saves coal measures system, including the water jacket flue 1 connecting with boiler nozzle, water jacket flue 1 Slope setting, water jacket flue 1 connect economizer 2, and 1 minimum point of water jacket flue sets water inlet line 9, is sent into water at low temperature, water by water pump Set 1 highest point of flue sets out waterpipe 10, exports the hot water heated by flue gas.Boiler flue gas outlet connects water jacket flue 1, water jacket The internal diameter of flue 1 wants moderate, to be determined according to air quantity, is advisable with wind speed 3-5 meters per second, the too slow flue inner product starch of wind speed Dirt, wind speed is too fast, and economizer 2 has just been discharged in insufficient flue gas that exchanges heat.Water jacket flue 1 is advisable with slope design, prevents dust from existing Accumulation in flue.Water jacket flue 1 is welded together inside and outside double-layer plate uniform stationing with the thick round bar 8 of Ф 25, strengthens branch Support structure, anti-1 expanded by heating of water-baffling sleeve flue deformation.

Referring to Fig. 1,3,4, equipped with more set heat exchange pipes 3 among economizer 2, adjacent heat exchange comb 3 is mutually staggered, so that high Warm flue gas is to be hampered by heat exchange pipe 3, increases the residence time, sufficiently exchanges heat.2 one side lower part of economizer has inlet water divider 4, Another upper lateral part has water separator 5 out, and every 3 water inlet end of set heat exchange pipe is connect with inlet water divider 4,3 water outlet of heat exchange pipe It is connect with water separator 5 out；Economizer 2 connects boiler desulfurization tower；2 bottom of box of economizer has ash bucket to export 6, has and collects powder The function of dirt particle.

The utility model is 60-80 DEG C from the flue gas come out in coal measures system is saved, and the service life highest of dust-removal cloth-bag can achieve 4 to 5 Year.Certainly, flue-gas temperature is not more lower better.It is entered in flue gas as a vapor after moisture burning in fire coal, pocket type removes Temperature is too low in dirt device, and moisture evaporation is too slow, and the moisture on cloth bag, which is stained with dust, can seriously hinder gas permeability, when windage reaches When 1200 or more, flue gas drainage difficulty, boiler not only burns bad, there is also down cigarette and chokes cigarette phenomenon.

Referring to Fig. 3, the heat exchange pipe being made by 57 thick-walled seamless steel pipes of Ф 32 to Ф is covered among economizer 2 equipped with 10-20 3, every set comb 10 to 20, with 2 90 degree of thick-wall elbows or 1 180 degree type is curved connects into comb between Guan Yuguan.Every set row Water inlet tube end is connect with inlet water divider 4, and water outlet is connect with water separator 5 out.

Referring to fig. 4,3 both ends of heat exchange pipe height staggered arrangement on inlet water divider 4 and out water separator 5.Every three row It is one group, first row comes bottom in middle position, third in a high position, second row.Respectively dislocation is that seamless steel pipe is straight between high, medium and low The 50% of diameter, hereafter each group carries out staggered arrangement by first group of ranking mode.There are two types of advantages for layout in this way.First, height Staggered arrangement, making the gap between each comb and pipe is not through type, and flue gas straight will not directly go out in economizer 2.It is each The gap of comb and pipe can all be blocked by the pipe of rear two rows, and flue gas must be moved forwards around tube wall curvilinear style.This layout The resistance of flue gas operation is increased, curve motion also extends flue gas running route and runing time, improves heat transfer effect.Its Two, half is blocked by second row heat exchanger tube in height staggered arrangement, the gap upper half between first row heat exchanger tube and pipe, and by Three combs have blocked the other half.This layout will form the dust particles in flue gas and move forwards and always encounters latter row's heat exchange The lower half portion of pipe forms the through type channel oliquely downward run, is conducive to that dust particles is forced oliquely downward to fall, and saves coal Device 2 collects dust particles, will reduce the pressure of later process sack cleaner.All economizers 2 are not all received in the market Collect the function of dust particles.

Economizer 2 faces the first row heat exchanger tube of water jacket flue 1, is directly carried secretly the shock of dust particles by larger wind speed, It wears more much bigger than the abrasion of second row and later each discharge pipe.Therefore, secured in first row whole heat exchanger tube windward side The round bar 8 of Ф 25 is welded, the service life of the frayed serious heat exchanger tube of first row is increased.

Efficiently save coal measures system not only can be reduced flue-gas temperature, greatly be extended the service life of dust-removal cloth-bag, removal portion with emission reduction Divide dust particles, reduce the pressure of later process sack cleaner, more obvious effect is energy conservation.By taking the boiler of 6 tons of rural area as an example, Its matched water jacket flue 1 and economizer 2, passing in and out water per hour is 10 tons, and intaking is 8 DEG C of underground water, is discharged 50 DEG C, summer Part hot water can be injected into boiler, save coal-fired, winter, these hot water were for more than 4000 square metres of building heating.Thus may be used See, efficiently saves the double benefit that coal measures system has energy conservation and emission reduction.

It is described above, only specific embodiment of the present utility model, various illustrations are not to the reality of the utility model The limitation of matter Composition of contents.

Claims (3)

1. high efficiency boiler saves coal measures system, it is characterised in that including the water jacket flue being connect with boiler nozzle（1）, water jacket flue （1）Slope setting, water jacket flue（1）Connect economizer（2）, water jacket flue（1）Minimum point sets water inlet line（9）, water jacket flue （1）Highest point sets out waterpipe（10）；Economizer（2）Centre is equipped with more set heat exchange pipes（3）, adjacent heat exchange comb（3）Mutually It is staggered, economizer（2）One side lower part has inlet water divider（4）, another upper lateral part has water separator out（5）, every set heat exchange pipe （3）Water inlet end and inlet water divider（4）Connection, heat exchange pipe（3）Water outlet and water separator out（5）Connection；Economizer（2）Even Connect boiler desulfurization tower；Economizer（2）The bottom of box has ash bucket outlet（6）.

2. high efficiency boiler described in accordance with the claim 1 saves coal measures system, it is characterised in that water jacket flue（1）There are methods for end lower part Blue formula ash removing opening（7）.

3. high efficiency boiler according to claim 1 or 2 saves coal measures system, it is characterised in that in economizer（2）At smoke inlet First row heat exchange pipe（3）Securely weld round bar in windward side（8）.