CN2788021Y - Coal-gasified drum type environment-friendly normal pressure hot-water boiler - Google Patents

Abstract

The utility model provides a coal-gasified drum type environment-friendly normal pressure hot-water boiler, which has the design goal for solving the technical problems of low heat exchange efficiency, fallen short of environmental protection exhaust, detonation, etc. Existing in the existing positive burning type normal pressure hot-water boiler for making gas by dispersed coal. A boiler main body comprises a water-jacket type boiler body and a horizontal boiler barrel on the upper part of the boiler body, wherein the boiler body is composed of a combustion chamber for making the gas, a convection main heat exchanging chamber and a flue heat exchanging chamber which is used as a communicating boiler barrel of the convection main heat exchanging chamber; the interior of the combustion chamber for making the gas is provided with an upper gas making grate and a secondary combustion grate. A forced draft fan in a boiler flue causes the gas generated on the gas making grate to be reversely combusted through an oxygenizing layer and a dry residue layer, and the flue gas is exhausted after the gas passes through the heating surfaces such as the convection main heat exchanging chamber, the flue heat exchanging chamber, the boiler barrel, etc. The technology has the technical characteristics of compact structure, little space occupation, high heat efficiency, no detonation and high safety performance, and also realizes the environmental protection exhaust.

Description

Coal-fired gasification drum formula atmospheric hot-water environmetnal protection boiler

Technical field

The utility model relates to the normal-pressure hot-water boiler technology that realizes diffusing coal gas burning work.

Background technology

The coal gas boiler that looses is the another big class boiler product of molded coal boiler of continuing.This type of boiler is by to the coal preheating destructive distillation reduction system gas that looses, with burning coal gas heat release work, the boiler applications fuel that the coal that looses can directly be discharged as environmental requirement.Existing all kinds of coal gas boilers, its typical structure such as Chinese patent: the patent No. is that CN02233626.5, name are called the technical scheme of " coal gas generation boiler ", the structure of boiler body of this technical scheme is served as reasons down supreme gazogene space, gas burner and the heat-exchanger rig space of being respectively arranged with until chimney, its forward direct combustion structure cause flue gas to promote and mass rate of emission too fast, flammable matter is also imperfect combustion, high-temperature flue gas can't promptly be discharged with the abundant heat exchange of heating surface, causes that its smoke dust discharge concentration exceeds standard, the thermal efficiency is low; Also to have a fatal technical problem be exactly to occur the ignition deflagrating of hot problem easily to combustion in right direction system gas boiler in addition, this is because the coal seam naked light separates with the coal gas of institute output, institute's producing coal gas is in treats that fire lights state, when treating that gas can be lighted, the concentration of coal gas is quite high and cause detonation, and its safe running performance perplexs the technical staff always.

The utility model content

Fast for overcoming the existing existing flue gas velocity of liquid assets of coal gas boiler of loosing with the flammable matter disposal of pollutants of a large amount of uncombusteds, also carrying and wasted valuable heat resources causes heat exchange efficiency to be difficult to improve, can't reach the technological deficiency of environment protection emission, and eliminate its detonation potential safety hazard, low fully to develop the system operating cost that gas boiler was possessed, gas fires advantage completely, the utility model provides a kind of technical scheme of coal-fired gasification drum formula atmospheric hot-water environmetnal protection boiler, the major technique content of the technical program is: this coal-fired gasification drum formula atmospheric hot-water environmetnal protection boiler, the horizontal drum that its boiler body includes water-jacket typ boiler furnace and its top constitutes, the space of structure that its boiler furnace encloses is separated the gas generation and combustion chamber is set, convection current main heat exchange chamber and be communicated with the flue Heat Room of drum as convection current main heat exchange chamber, the upper fire-grating of the indoor setting of gas generation and combustion and second-time burning fire grate are divided into the gas generation and combustion chamber coal seam system headroom of top, the second-time burning space and the cinder chamber of below, feed convection current main heat exchange chamber by the second-time burning space and be provided with the flue gas port, the flue Heat Room is communicated to the front smoke box of drum by the exhanst gas outlet of convection current main heat exchange chamber top with flue gas, is provided with the forced draft fan that makes the backfire of gas generation and combustion chamber in its flue.

The utility model coal-fired gasification drum formula atmospheric hot-water environmetnal protection boiler art designs, the gas generation and combustion chamber that it is inner, convection current main heat exchange chamber, the flue Heat Room, the structural design of horizontal drum particularly, make it possess circulation formula exhaust gases passes and corresponding heated face structure thereof, this structure has not only prolonged flue gas circulation length, also appropriateness has blocked the flue gas velocity of liquid assets, make it that time enough and heating surface heat exchange be arranged, thereby improved its heat exchange efficiency greatly, and this gas generation and combustion cell structure cooperates the backfire process, not only can make diffusing coal combustion, heat release gets more thorough, greatly reduce the smoke content in the flue gas, make its discharging reach environmental requirement, and this structure impels made coal gas must walk naked light layers such as the oxide layer in coal seam and dried slag blanket, meet fire burns heat release work, so fundamentally overcome the technical problem of system gas boiler startup detonation, therefore its safe running performance improves greatly.Present technique also has characteristics such as the little and operating cost of compact conformation, occupation of land and spatial dimension is low.

Description of drawings

Fig. 1 is the internal structure schematic diagram of this coal-fired gasification drum formula atmospheric hot-water environmetnal protection boiler boiler body

Fig. 2 is the A-A sectional structure schematic diagram of Fig. 1

Fig. 3 is the B-B sectional structure schematic diagram of Fig. 1.

The specific embodiment

As shown in the figure, the boiler body 1 of coal-fired gasification drum formula atmospheric hot-water environmetnal protection boiler of the present utility model is to be assembled by the horizontal drum 2 on water-jacket typ boiler furnace and its top to constitute, and boiler furnace and drum 2 have unified water circulation.The inner space of its water-jacket typ structure that boiler furnace encloses is separated into the flue Heat Room 32 of adjacent gas generation and combustion chamber 30, the left and right sides, below and convection current main heat exchange chamber 31, top flue gas connection convection current main heat exchange chamber 31 and drum front smoke box 11, back smoke box 12 and chimney 13 by drum realize that flue gas externally discharges, and the flue of this boiler is provided with the forced draft fan that makes the backfire work operation of coal seam, gas generation and combustion chamber.Upper grate 33 in the gas generation and combustion chamber 30 and following second-time burning fire grate 34 are divided into this space coal seam system headroom 330 and the second-time burning space 340 of below and the cinder chamber 350 of bottom of top, communicate with coal seam system headroom 330 on the body of heater and be provided with ort 331 and skimming door 332, communicate with second-time burning space 340 and to be provided with return air adjustment doors 341, feed 31 bottoms, convection current main heat exchange chamber by second-time burning space 340 and be provided with the flue gas port 300 that flue gas is communicated with, combustion-supporting material layers such as system bottle coal layer that upper grate 33 set up and dried firewood, cover the coal seam of suitable thickness after lighting again, it is in the gas generation and combustion, under the effect of forced draft fan, the coal gas that the coal seam produced burns when being carried the naked light layer of the oxide layer that navigates within the coal seam and dried slag blanket at once, thereby avoided starting the safe disadvantage of detonation, its high-temperature flue gas pours in convection current main heat exchange chamber 31 by flue gas port 300, wash away heating surface 310 heat convections of convection current main heat exchange chamber, exhanst gas outlet 311 by 31 tops, convection current main heat exchange chamber enters flue Heat Room 32 again, except that realizing the heat exchange in this flue Heat Room 32 and its water jacket furnace wall, also under the guiding of forcing air inducing, enter the front smoke box 11 of drum, walk the back smoke box 12 that enters drum by the pyrotechnics pipe 14 of drum, by chimney 13 discharging flue gases, also the flue gas of chimney can be fed in the water dust-removing sulphur removing function device, further discharge behind the desulfurization and dedusting.Bank up a fire for the realization boiler, on the furnace wall of coal seam system headroom 330, be provided with atmosphere communicating valve 312, can make this boiler normally move work when sealing this communicating valve 312, when opening wide this communicating valve 312, can realize the banking operation.

Claims (1)

1, a kind of coal-fired gasification drum formula atmospheric hot-water environmetnal protection boiler, it is characterized in that this boiler body includes horizontal drum (2) formation on water-jacket typ boiler furnace and its top, the space of structure that its boiler furnace encloses is separated gas generation and combustion chamber (30) is set, the flue Heat Room (32) of convection current main heat exchange chamber (31) and connection convection current main heat exchange chamber (31) and drum (2), the last lower fire grating that is provided with in the gas generation and combustion chamber (30) is divided into the gas generation and combustion chamber coal seam system headroom (330) of top, the second-time burning space (340) and the cinder chamber of below, feed convection current main heat exchange chamber (31) by second-time burning space (340) and be provided with flue gas port (300), flue Heat Room (32) is communicated to the front smoke box (11) of drum by the exhanst gas outlet (311) of convection current main heat exchange chamber top with flue gas, is provided with the forced draft fan that makes the backfire of gas generation and combustion chamber in its flue.