CN100427825C - Pneumatic controlling ash-in external heat exchanger - Google Patents

Pneumatic controlling ash-in external heat exchanger Download PDF

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CN100427825C
CN100427825C CN 200510102905 CN200510102905A CN100427825C CN 100427825 C CN100427825 C CN 100427825C CN 200510102905 CN200510102905 CN 200510102905 CN 200510102905 A CN200510102905 A CN 200510102905A CN 100427825 C CN100427825 C CN 100427825C
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chamber
heat exchanger
external heat
ash
feed
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CN 200510102905
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CN1932379A (en )
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包绍麟
吕清刚
孙运凯
军 贺
那永洁
鸣 高
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中国科学院工程热物理研究所
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Abstract

本发明涉及的用于循环流化床燃烧装置的气动控制进灰的外置换热器,包括一循环灰气动控制分配阀和一外置换热器,利用结构和气动操作条件,使高温气固分离器分离下来的循环灰一部分直接返回炉膛,另一部分进入外置换热器,与换热面换热后再返回炉膛;两部分循环灰的流率比例通过流化风进行调节,从而实现对进入外置换热器的循环灰量的控制。 The present invention relates to a pneumatic circulating fluidized bed combustion apparatus for controlling an external heat exchanger into the ash, the ash pneumatic control loop comprising a dispensing valve and an external heat exchanger, with the structure and pneumatic operation conditions, the high-temperature gas-solid separation separated down circulating ash furnace directly back part, the other part into the external heat exchanger, the heat exchanger heat transfer surface and then return to the furnace; flow rate ratio of two gray portion of the cycle is adjusted by flow of air, into the outer order to achieve substitution amount of the circulating ash heat control. 本发明所提出的一种气动控制进灰量的外置换热器,通过简单的结构和简便的操作,实现对高温循环灰的控制、分配和调节,不易磨损,也没有运动部件,不会发生机械故障。 To a pneumatic proposed by the present invention, the control advances ash content EHE, simple structure and easy operation, to achieve the high-temperature cycle ash control, distribution and regulation, easy to wear, no moving parts, does not occur mechanical failure.

Description

一种气动控制进灰的外置换热器 To a pneumatic control proceeds ash EHE

技术领域 FIELD

本发明涉及一种循环流化床燃烧装置中的外置换热器,特别涉及一种气动控制进灰的外置换热器。 The present invention relates to a circulating fluidized bed combustor apparatus external heat exchanger, and particularly relates to a pneumatic control passes ash EHE.

背景技术 Background technique

外置换热器是由一个或多个仓室构成的内部放置受热面的细粒子鼓泡流化床,布置在循环流,燃烧装置的高温循环灰回路中,其中的受热面一般以蛇形管方式布置,并浸没于处于流态化的热灰中,管内的冷却介质(蒸汽或水)吸收热灰热量。 External heat exchangers are disposed heating surface inside the fine particles of the bubbling fluidized bed consisting of one or more compartments, disposed in the circulation flow, high-temperature circulating ash loop combustion apparatus, wherein the heating surface generally serpentine arrangement, and immersed in hot ash is fluidized, a cooling medium (steam or water) in the pipe absorbs heat ash heat. 循环流化床燃烧装置的高温气固分离器分离下的商温循环灰在分流装置的调节与控制下, 一部分经返料器直接返回炉膛,另一部分进入外置换热器,与布置在其中的受热面进行热交换后, 返回炉膛。 Circulating fluidized bed commercially temperature cycles at a high temperature gas-solid separator combustion device separating ash under the regulation and control of shunt device, a portion of the loop seal return directly furnace, another portion enters the external heat exchanger, and disposed therein after heating surface for heat exchange, it returns the furnace.

外置换热器在循环流化床锅炉中的应用,有利于锅炉受热面的布置;锅炉负荷调节性能好,有利于减少污鄉的排放;鄉调节功能好:燃料适应性好;耐腐蚀性好。 External heat exchanger in a circulating fluidized bed boiler applications, beneficial arrangement heating surface of the boiler; boiler load regulation performance, help to reduce pollution rural emissions; rural regulate functions: good fuel flexibility; good corrosion resistance . 外置换热器的这^tt点,大部分都建立在对进入外置换热器的高温循环灰流率的良好调节和控制的基础之上,因此循环灰分流装置就显得尤为重要。 This ^ tt point external heat exchanger, most of them based on good regulation of temperature cycle ash flow rate into the external heat exchanger and controlled based on the thus circulating ash shunt device is particularly important. 目前的循环灰分流装置可分为机械式和非机械式两种。 The current circulating ash shunt device can be divided into mechanical and non-mechanical two.

机械阀主要有广泛使用在Lurgi型循环流化床锅炉上的锥形阀,以及MSFB型的滑板式闸阀。 Mechanical valve main widely conical valve on the Lurgi circulating fluidized bed boiler, and MSFB type slide gate valve. 机械阀的优点在于调节特性优良、运行控制调节灵活;但是由于长期在高温下工作,机械阀结构复杂、容易卡塞、容易磨损、材料等级髙、价格昂贵。 Advantage of mechanical valves is that excellent regulation characteristics, operation control and flexible adjustment; however, due to the long work at high temperatures, complex mechanical valve structure, easy jam, easy to wear, material grade Gao expensive.

非机械方式主要是气动控制方式,不借助机械结构,而是通过流化风的作用调节控制进入外置换热器的髙温循环灰。 Non-mechanical means is mainly pneumatic control mode, without the aid of mechanical structure, but adjustment Gao temperature circulating ash control proceeds to the external heat exchanger by the action of the flow of the wind.

发明内容 SUMMARY

本发明的目的是提出一种气动控制进灰的外置换热器,采用气动方式控制进入外置换热器的高温循环灰量,高温循环灰在外置换热器中与布置在其中的换热面进行热交换后返回炉膛,从而达到控制换热量的目的,并起到调节床温或汽温等的作用。 Object of the present invention is to provide a pneumatically controlled into the ash EHE, pneumatically controlled into the external heat exchanger ash temperature cycle, temperature cycle ash outer permutation heat conducted arranged in the heat exchange surfaces therein after the heat exchanger returns the furnace, so as to achieve control of heat exchange, and play a role in regulating the bed temperature or the steam temperature or the like. 本发明的技术方案如下: Aspect of the present invention is as follows:

本发明提供的气动控制进灰的外置换热器,包括: 一循环灰气动控制分配阀100, 和一外置换热器200; Pneumatic present invention provides a control into the gray external heat exchanger, comprising: a circulating ash pneumatic control distribution valve 100, and an external heat exchanger 200;

所述循环灰气动控制分配阀100包括: The circulating ash pneumatic control distributor valve 100 comprises:

设置在循环流化床燃烧装置高温气固分离器料腿l正下方的一竖直分流板2,所述竖直分流板2两侧分别设置两室上部相通,底面处于同一水平高度的第一进料室3和第二进料室5,所述竖直分流板2将分离器料腿1在两室底面上的投影分成两个部分;还 Provided on a vertical divider plate circulating fluidized bed combustion system high-temperature gas-solid separator dipleg l just below 2, 2 on both sides of the vertical diverter plates are provided the upper two chambers in communication, the bottom surface is at the same level of the first the feed chamber 3 and a second feed chamber 5, the vertical diverter plate 2 the separator dipleg a projected two-chamber bottom surface is divided into two portions; further

包括第一出料室4和第二出料室6;所述第一出料室4和第二出料室6的上部分别设有 It comprises a first discharge chamber 4 and the second discharge chamber 6; upper portion of said first discharge chamber 4 and the second discharge chamber 6 are provided with

底端处于同一水平高度的第一溢流口7和第二溢流口8; A bottom end at the same level of the first overflow opening 7 and a second overflow port 8;

所述第一进料室3与第一出料室4底部通过第一水平孔10相通,第二进料室5与 The first feed chamber 3 and the bottom of the first discharge chamber 4 through 10 communicates a first horizontal hole, the second feed chamber 5 and

第二出料室6底部通过第二水平孔11相通;所述第一水平孔10和第二水平孔11顶端处于同-一水平高度;竖直分流板2顶端不低于第一水平孔10顶端,且不高于第一溢流 Second the bottom of the feed chamber 611 communicates through a second horizontal aperture; 10 and second horizontal bore 11 to the top of the first horizontal hole is the same - a horizontal level; 2 top vertical diverter plate is not lower than the first horizontal bore 10 to the top, and not higher than the first overflow

口7底端;所述第一出料室4、第一进料室3、第二进料室5、第二出料室6底面均为带风帽的布风板,布风板下方分别设置与所述第一出料室4、第一进料室3、第二进料室5和第二出料室6相对应的风室,风室内通入流量可调节的流化风; 7 a bottom end opening; the first discharge chamber 4, a first feed compartment 3, a second feed chamber 5, a second discharge chamber 6 bottom surface are hooded air distribution plate, below the air distribution plate are provided the first discharge chamber 4, a first feed compartment 3, the second feed chamber 5 and a second discharge chamber 6 corresponding to the plenum, air chamber into a regulated flow of fluidizing air;

所述外置换热器200包括:设置在换热器内的一竖直折流板12,所述折流板12上: 端与换热器顶面之间留有气流平衡孔13,并将外置换热器内腔分为外置换热器第一室i 20和外置换热器第二室21,所述外置换热器第一室20上部与第二溢流口8相通,底部与外置换热器第二室21相通,所述外置换热器第二室21上部通过第三溢流口9与炉膛相通;所述外置换热器第一室20和外置换热器第二室21底面均为带风帽的布风板,布风板下方分别与所述外置换热器第一室20和外置换热器第二室21相对应的风室,风室内通入流量可调节的流化风。 The external heat exchanger 200 comprising: a vertical baffle disposed within the heat exchanger 12, the baffle plate 12:13 left to balance the flow aperture between the end of the heat exchanger top surface, and EHE lumen into EHE first chamber I 20 and external heat exchanger of the second chamber 21, an upper portion of the external heat exchanger of the first chamber 20 and the second overflow opening 8 communicates, at the bottom of the outer replacement heat the second chamber 21 in communication, the external heat exchanger of the second chamber upper portion 21 through the third relief port 9 and the furnace communication; the external heat exchanger of the first chamber 20 and the external heat exchanger of the second chamber 21 the bottom surface are hooded air distribution plate, below the air distribution plate each plenum 21 corresponding to the external heat exchanger of the first chamber 20 and the external heat exchanger of the second chamber, the wind chamber into the flow adjustable flow of the wind.

所述竖直分流板2将分离器料腿1在第一进料室3和第二进料室5底面上的投影分成的两个部分的面积之比为0.25—4.0。 The vertical diverter plate 2 the separator dipleg ratio of areas of the two portions 1 in a projection of the first feed chamber 3 and a second feed chamber 5 bottom surface into a 0.25 to 4.0. 所述外置换热器第一室20与外置换热器第二室21橫截面积之比为0.05—20.00。 20 and an external heat exchanger of the second chamber than 21 cross-sectional area of ​​the external heat exchanger of the first chamber is from 0.05 to 20.00.

本发明的原理是,通过结构和气动操作条件,使循环流化床燃烧装置高温气固分离器分离下来的循环灰一部分直接返回炉膛,另一部分进入外置换热器,被受热面冷却后再返回炉膛;两部分循环灰的比例通过调节第一进料室、第二进料室以及第一出料室、 第二出料室的流化风速,实现对进入外置换热器的循环灰量的控制。 The principles of the present invention is by structural and aerodynamic operating conditions, the circulating fluidized bed combustion system a high temperature gas-solid separator detached circulating gray portion of the direct return furnace, another portion enters the external heat exchanger, and then is cooled heating surface Back furnace; two partial cycle ash ratio by adjusting the first feed chamber, a second feed compartment, and a first discharge chamber, a second outflow air velocity feed chamber, to achieve the ash is recycled into the external heat exchanger of control. 提高第二进料室或第二出料室的流化风速,进入外置换热器的循环灰量随之增加,反之则减少。 Improve fluidization Winds second feed chamber or the second discharge chamber, into the external heat exchanger circulation ash content increases, and vice versa reduced. 这样,通过改变流化风速,可以使高温循环灰在第一进料室和第二进料室之间进行分配,能够对进入外置换热器的循环灰量在占总循环灰量的0—100%间进行调节。 Thus, by changing the fluidizing velocity, can make high-temperature cycle ash partitioned between the first intake chamber and a second feed chamber, it is possible to enter the external heat exchanger ash circulation in total circulating ash content 0- between 100% adjustment. 具体地,通过设置分流板,将直接返回炉膛的循环灰的进料室与进入外置换热器换热的循环灰的进料室分隔开;分流板顶端不低于第一水平孔顶端,使第一进料室与第二进料室的流化风不会相互千扰,从而保证第一进料室和第二进料室的、流化风对两部分循环灰量的分配和调节是独立和可靠的;此外,当霈要关闭一側循环灰回路时,分流板顶 Specifically, by setting the manifold, the direct return to the furnace circulating ash feed chamber and into the external heat exchanger of the circulating ash feed compartment separated; manifold top of not less than a first horizontal hole top, fluidizing air a first inlet chamber and the second feed chamber is not another one thousand interference, which ensure that the first inlet chamber and a second feed chamber, flow of air to the two partial cycle ash distribution and regulation are independent and reliable; in addition, when Pei to close one side of circulation ash circuit, manifold top

端不低于第一水平孔顶端保证了这种关闭的可靠性。 End is not lower than the first horizontal hole tip ensures that the reliability of closure.

竖直分流板顶端不高于第一溢流口底端,则可保证分流板全部浸没于循环灰中,这样循环灰可根据第一进料室、第二进料室以及第一出料室、第二出料室的流化风速的改变,即时改变流入第一进料室和第二进料室的灰豕。 Top vertical diverter plate is not higher than the bottom end of the first overflow outlet, you can ensure that the distribution plate fully immersed in the circulating ash, so circulating ash may be based on the first feed chamber, a second feed compartment, and a first discharge chamber second the change stream air velocity of the feed chamber, instantaneously changing flows gray hog first intake chamber and a second feed chamber.

如果竖直分流板高于第一溢流口底端,当第一进料室、第一出料室与第二进料室、 第二出料室的流化风速接近时,循环灰料位面略高于第一溢流口,竖直分流板将高于循环灰料位面,进入第一进料室与第二进料室的循环灰量基本决定于从料腿直接落入其中的灰量,气动控制基本失效。 If the vertical divider plate above the bottom end of the first overflow port, when the first feed chamber, a first discharge chamber and the second feed chamber, a second outflow air velocity feed chamber close loop soot bit slightly above the first overflow port, the vertical manifold higher than circulating gray material plane, into the circulation ash substantially determines a first inlet chamber and the second feed chamber to fall therein from the dipleg directly ash, pneumatic control basic failure. 同时,由于循环灰在料腿下落过程中在^t截面上的分布带有一定的随机性和不均匀性,使得落入第一进料室和第二进料室的循环灰量也带有随 Meanwhile, since the process distributed over ^ t sectional circulating ash dipleg fall with a certain randomness and unevenness, so that the fall of the first feed chamber and circulating ash second feed chamber is also provided with follow

机性和不均匀性,进入外置换热器的循环灰量不仅不可控,并且不断波动;只有当第一进料室、第一出料室与第二进料室、第二出料室的流化风速差距较大,流化风速较小一侧的循环灰堆积,超过分流板顶端,此时气动控制能力才能有所恢复。 Machine and inhomogeneities into the EHE circulating ash content not only controllable and fluctuating; only when the first feed chamber, a first discharge chamber and the second feed chamber, a second discharge chamber fluidized wind velocity gap is large, the flow of wind speed is low side of the circulating ash accumulation, over the top of the manifold, then pneumatic control can be restored.

竖直分流板将分离器料腿在第一进料室和第二进料室底面上的投影分成两个部分, 这两部分的面积之比为0.25—4.0,是考虑到当循环灰直接返回炉膛的返料口高度,与循环灰经外置换热器返回炉膛的返料口高度,二者如果不相同时,第一溢流口与第三溢流口的压力也将不同,返料口高度越髙,对应溢流口压力则越低,循环灰从分离器料腿流经该溢流口返回炉膛的阻力也就越低,该回路中的循环灰流率也越大。 Vertical splitter plate separator dipleg in the first feed chamber and a second feed chamber bottom plane of the projection is divided into two portions, the area ratio of these two portions is from 0.25 to 4.0, in view of the circulating ash directly back when furnace material returning opening height, and circulating ash through an external heat exchanger return to the furnace return spout height, two if not the same, the first overflow port and the third overflow outlet pressure will be different, back to the discharge port height more Gao, corresponding to the overflow outlet pressure is lower, circulating ash flow through the overflow outlet from the separator dipleg to return resistance furnace lower the circulating ash flow rate of the loop larger. 然而,对于循环灰在两循环灰回路中的分配而言, 一般希望当第一进料室、第一出料室与第二进料室、 第二出料室的流化风速相同时,两回路中的循环灰流率也相同,这样才能使直接返回炉膛的循环灰和经外置换热器返回炉膛的循环灰都能在占总循环灰量的0—100%这样大的范围内进行调节。 However, for circulating ash in two circulating ash loop distribution, the general hope that when the first intake chamber, a first discharge chamber and the second feed chamber, the second discharge chamber fluidized wind velocity is the same, two circulating ash flow rate of the circuit are also the same, so as to enable direct return furnace circulating ash and return to the furnace through the external heat exchanger circulating ash can be adjusted within the total circulation ash content of 0-100%, such a large range . 因此根据第一溢流口与第三溢流口的压力,选取两部分面积比的具体数值:第一溢流口压力较大时,分离器料腿在第一进料室底面上的投影面积较大,分 Thus, according to the pressure of the first relief port and the third overflow port, to select specific values ​​two portions area ratio: a first overflow outlet pressure is large, the separator dipleg projected area of ​​the first feed chamber bottom surface large, divided

离器料腿在第一进料室底面上的投影与在第二进料室底面上的投影面积比大于1;反之则是在第二进料室底面上的投影面积较大;两部分面积比小于1。 Remover dipleg first feed chamber bottom surface of the projection of the second feed chamber bottom plane of the projection area ratio is greater than 1; otherwise it is in the second feed compartment bottom plane of the projection area larger; two part of the area less than 1.

外置换热器中若不设置折流板,进入外置换热器中的循环灰会在外置换热器流化风的流化下,从外置换热器上部的第二溢流口进入,又直接从位于上部的第三溢流口离开, 削弱循环灰与换热面之间的换热效果。 External heat exchanger if provided baffles, circulating ash into the external heat exchanger will outer permutation fluidized heat flow of air, the process proceeds from the second overflow opening upper portion of the external heat exchanger, and direct from the upper portion of the third overflow opening away, weakening effect of heat transfer between the circulating ash and heat transfer surfaces. 折流板的设置,保证了循环灰全部流过外置换热器换热面,并与之充分换热。 Provided baffles ensure that the circulation ash all flow through the external heat exchanger surfaces, and with adequate heat transfer. 折流板分隔出的外置换皿第一室与外置换热器第二室的大小可根据霈要确定,折流板靠近第二溢流口或第三溢流口时,仅在外置换热器第二室或外置换热器第一室内布置换热面,另一室仅作为进料或者出料通道;折流板位于外置换热器中部时,尤其适用于双流程的外置换热器,如折流板两側分别布置锅炉的过热器和再热器,或者省煤器和过热器。 When the baffle partitioned outer permutation size pan of the first chamber and the second chamber of the external heat exchanger may be determined according to Pei, baffle near the second overflow port or the third overflow port, only the outer permutation heat a second chamber or external heat exchanger a first chamber disposed heat transfer surface, the other chamber only as the feed or discharge channel; when baffle central external heat exchanger, especially for two-pass external heat exchanger, the baffle side plates disposed respectively superheater and reheater boiler or economizer and superheater. 第二进料室和第二出料室的流化风经折流板上部的气流平衡孔和第三溢流口返回炉膛。 Balance the flow orifice flow of air through the baffle plate portion of the second feed chamber and a second discharge chamber and a third overflow port returns furnace.

本发明的优点是,所提出的一种气动控制进灰量的外置换热器,通过简化的结构和简便的操作,实m高温循环灰的分配、调节和控制,不易磨损,也没有运动部件,不会发生机械故陣。 Advantage of the invention is a pneumatic proposed control into the ash amount of the external heat exchanger, with a simplified construction and easy operation, solid m high-temperature cycle ash distribution, regulation and control, easy to wear, no moving parts mechanical so array does not occur. 该气动控制进灰的外置换热器可以用于循环流化床锅炉、循环流化床焚烧炉、以循环流化床为核心的多联供等循环流化床燃烧装置。 The pneumatic control into the gray external heat exchanger may be used in a circulating fluidized bed boiler, a circulating fluidized bed incinerator, to circulating fluidized bed as the core of a multi-supply and other circulating fluidized bed combustion system.

附图说明 BRIEF DESCRIPTION

图1为本发明的实施例1的结构示意图: 图2为本发明的实施例2的结构示意图; The structure of the embodiment of Figure 1 of the present invention. FIG: structural diagram of embodiment 2 of FIG. 2 of the present invention embodiment;

具体实施方式-实施例1 DETAILED Embodiment - Example 1

图1为本发明的实施例1的结构示意图,由图可知,本实施例的气动控制进灰的外置换热器的具体结构如下: Specific structural schematic structural diagram of an embodiment of FIG. 1 of the present invention, can be seen from the figure, the pneumatic this embodiment of a control into the ash EHE follows:

在循环流^燃烧装置髙温气固分离器料腿1正下方设置一竖直分流板2,其两侧分别设置第一进料室3和第二进料室5,两室上部相通,底面处于同一水平高度,竖直分流板2将分离器料腿1在两室底面上的投影分成两个部份:还包括第一出料室4和第二出料室6;所述第一出料室4和第二出料室6的上部分别设有底端处于同一水平高度 Circulation flow ^ burner Gao temperature gas-solid separator dipleg disposed directly below 1 a vertical divider plate 2 of which both sides are respectively provided a first feed compartment 3 and a second feed chamber 5, the upper two chambers in communication, the bottom surface at the same level, the vertical manifold 2 the separator dipleg a projected two-chamber bottom surface is divided into two portions: further comprising a first discharge chamber 4 and the second discharge chamber 6; the first out an upper material chamber 4 and the second discharge chamber 6 are provided with bottom at the same level

的第一溢流口7和第二溢流口8; The first overflow port 7 and a second overflow port 8;

第一进料室3与第一出料室4底部通过第一水平孔10相通,第一出料室上部通过第一溢流口7与炉膛相通;第二进料室5与第二出料室6底部通过第二水平孔11相通, 第二出料室6上部通过第二溢流口8与外置换热器相通; First feed chamber 310 communicates with the bottom of the first discharge chamber 4 through the first horizontal hole, an upper portion of the first discharge chamber via a first overflow port 7 and the furnace communication; second feed chamber 5 and the second discharge the bottom of the chamber 6 through the second horizontal hole communicating 11, 6 upper second discharge chamber 8 communicates with an external heat exchanger through a second overflow port;

外置换热《«折流板12分为外置换热器第一室20和外置换热器第二室21 ,外置换热器第一室20上部与第二溢流口8相通,底部与外置换热器第二室21相通,外置换热器第二室21上部通过第三溢流口9与炉膛相通.,第一溢流口7、第二溢流口8和第三溢流口9底端处于同一水平高度;第一水平孔10和第二水平孔11顶端处于同一水平高度; EHE "« baffle 12 into the external heat exchanger of the first chamber 20 and the external heat exchanger of the second chamber 21, the upper portion of the external heat exchanger of the first chamber 20 and a second overflow port 8 communicates, at the bottom of the outer replacement heat the second chamber 21 communicates, EHE second chamber upper portion 219 of the chamber communicates through the third relief port., first overflow port 7, a second overflow port 8 and the third relief port 9 a bottom end at the same level; first horizontal hole 10 and the second horizontal bore 11 to the top at the same level;

竖直分流板2顶端不低于第一水平孔10顶端,且不高于第一溢流口7底端; Vertical diverter plate 2 to the top is not less than the first horizontal bore 10 to the top, and not higher than 7 the bottom end of the first overflow port;

第一出料室4、第一进料室3、第二进料室5、第二出料室6、外置换热器第一室20 和外置换热器第二室21底面均为带风帼的布风板,布风板下方分别设置与第一出料室4、第一进料室3、第二进料窒5、第二出料室6、外置换热器第一室20和外置换热器第二室21相对应的风室,风室内通入流量可调节的流化风;折流板12顶部开有气流平 A first discharge chamber 4, a first feed compartment 3, a second feed chamber 5, a second discharge chamber 6, 21 a bottom surface of the external heat exchanger of the first chamber 20 and the external heat exchanger of the second chamber are both with the wind Guo air distribution plate, below the air distribution plate are respectively provided with the first discharge chamber 4, a first feed compartment 3, a second feed snapped 5, a second discharge chamber 6, an external heat exchanger of the first chamber 20 and EHE second chamber 21 corresponding to the plenum, air chamber into a regulated flow of fluidizing air; top baffle plate 12 is opened airflow level

衡孔13; Balance holes 13;

竖直分流板2将分离器料腿1在第一进料室3和第二进料室5底面上的投影等分; 外置换热器第一室20与外置换热器第二室21横截面积之比为0.05,在外置换热器第二室21中布置受热面(或者外置换热器第一室20与外置换热器第二室21横截面积之比为20,在外置换热器第一室20中布置受热面)。 Vertical manifold 2 to a separator dipleg 1 in the first feed chamber 3 and a second feed chamber 5 bottom surface of the projection aliquot; EHE first chamber 20 and the external heat exchanger of the second chamber 21 transverse sectional area ratio of 0.05, an outer permutation 20 and the external heat exchanger of the second chamber than 21 cross-sectional area heat the second chamber 21 is arranged heating surface (or external heat exchanger of the first chamber 20, the outer permutation heat the first chamber 20 is arranged heating surface).

实施例2 Example 2

在循环流,燃烧装置离温气固分离器料腿1正下方设置一竖直分流板2,其两侧分别为第一进料室3和第二进料室5,两室上部相通,底面处于同一水平高度,竖直分流板2将分离器料腿1在两室底面上的投影分成两个部份;还包括第一出料室4和第二出料室6;所述第一出料室4和第二出料室6的上部分别设有底端处于同一水平高度的 In circulation flow, the combustion apparatus is provided from just below the temperature of gas-solid separator dipleg 1 a vertical divider plate 2, on both sides thereof, respectively a first feed compartment 3 and a second feed chamber 5, the upper two chambers in communication, the bottom surface at the same level, the vertical manifold 2 the separator dipleg a projected two-chamber bottom surface is divided into two parts; further comprises a first discharge chamber 4 and the second discharge chamber 6; the first out an upper material chamber 4 and the second discharge chamber 6 are provided with the height of the bottom end at the same level

第一溢流口7和第二溢流口8; First overflow opening 7 and a second overflow port 8;

第一进料室3与第一出料室4底部通过第一水平孔10相通,第一出料室上部通过第一溢流口7与炉膛相通;第二进料室5与第二出料室6底部通过第二水平孔11相通, 第二出料室6上部通过第二溢流口8与外置换热器相通; First feed chamber 310 communicates with the bottom of the first discharge chamber 4 through the first horizontal hole, an upper portion of the first discharge chamber via a first overflow port 7 and the furnace communication; second feed chamber 5 and the second discharge the bottom of the chamber 6 through the second horizontal hole communicating 11, 6 upper second discharge chamber 8 communicates with an external heat exchanger through a second overflow port;

外置换热器被折流板12分为外置换热器第一室20和外置换热器第二室21,外置换热器第一室20上部与第二溢流口8相通,底部与外置换热器第二室21相通,外置换热器第二室21上部通过第三溢流口9与炉膛相通;第一溢流口7、第二溢流口8和第三溢流口9底端处于同一7jC平高度;第一水平孔10和第二水平孔11顶端处于同一水平高度; External heat exchanger is a baffle 12 into the external heat exchanger of the first chamber 20 and the external heat exchanger of the second chamber 21, the upper portion of the external heat exchanger of the first chamber 20 and a second overflow port 8 communicates, at the bottom of the outer replacement heat the second chamber 21 communicates, EHE second chamber upper portion 21 through the third relief port 9 and the furnace communication; a first overflow port 7, a second overflow port 8 and the third overflow port 9 bottom end at the same 7jC level height; a first horizontal hole 10 and the second horizontal bore 11 to the top at the same level;

竖直分流板2顶端与第一溢流口7底端处于同一水平高度: Vertical splitter plate 2 to the top and 7 the bottom end of the first overflow port at the same level:

第一出料室4、第一进料室3、第二进料室5、第二出料室6、外置换热器第一室20 和外置换热器第二室21底面均设置带风帽的布风板,布风板下方分别设置与第一出料室4、第一进料室3、第二进料室5、第二出料室6、外置换热器第一室20和外置换热器第二室21相对应的风室,风室内通入流i可调节的流化风;折流板12顶部开有气流平衡孔13; A first discharge chamber 4, a first feed compartment 3, a second feed chamber 5, a second discharge chamber 6, an external heat exchanger of the first chamber 20 and 21, the bottom surface of the external heat exchanger of the second chamber are each provided with a hood the air distribution plate, below the air distribution plate are respectively provided with the first discharge chamber 4, a first feed compartment 3, a second feed chamber 5, a second discharge chamber 6, an external heat exchanger of the first chamber 20 and the outer replacement heat the second chamber 21 corresponding to the plenum, air chamber through the inflow i adjustable flow of air; top baffle plate 12 is opened to balance the flow holes 13;

竖直分流板2将分离器料腿1在第一进料室3和第二进料室5底面上的投影分成的两个部分的面积之比为0.25 (或者为4);外置换热器第一室20与外置换热器第:空21 横截面积之比为1,在外置换热器第一室20和外置换热器第二室21中均布置受热面。 2 the separator dipleg ratio of vertical splitter plate area of ​​the two portions 1 in a projection of the first feed chamber 3 and a second feed chamber 5 bottom surface into a 0.25 (or 4); EHE the first chamber 20 and the external heat exchanger of: air 21 cross sectional area ratio of 1, the outer permutation heat the first chamber 20 and the external heat exchanger of the second chamber 21 are arranged heating surface.

Claims (3)

  1. 1、一种气动控制进灰的外置换热器,包括:一循环灰气动控制分配阀(100),和一外置换热器(200); 所述循环灰气动控制分配阀(100)包括: 设置在循环流化床燃烧装置高温气固分离器料腿(1)正下方的一竖直分流板(2),所述竖直分流板(2)两侧分别设置两室上部相通,底面处于同一水平高度的第一进料室(3)和第二进料室(5),所述分流板(2)将分离器料腿(1)在两室底面上的投影分成两个部分;还包括第一出料室(4)和第二出料室(6);所述第一出料室(4)和第二出料室(6)的上部分别设有底端处于同一水平高度的第一溢流口(7)和第二溢流口(8); 所述第一进料室(3)与第一出料室(4)底部通过第一水平孔(10)相通,第二进料室(5)与第二出料室(6)底部通过第二水平孔(11)相通;所述第一水平孔(10)和第二水平孔(11)顶端处于同一水平高度;分流板(2)顶端不低于第一水平孔(10)顶端, A pneumatic control into the gray external heat exchanger, comprising: a circulating ash pneumatic control distribution valve (100), and an external heat exchanger (200); the circulating ash pneumatic control distribution valve (100) comprises: disposed in a circulating fluidized bed combustor apparatus of high-temperature gas-solid separator dipleg (1) n a vertical divider plate (2) below, the vertical diverter plate (2) on both sides are disposed the upper two chambers in communication, the bottom surface is the same level of height of the first feed chamber (3) and a second feed chamber (5), said diverter plate (2) the separator dipleg (1) is divided into two portions projected two-chamber bottom surface; further including a first discharge chamber (4) and a second discharge chamber (6); the first discharge chamber (4) and a second discharge chamber (6) of the upper respectively, with the bottom at the same level height a first overflow port (7) and a second overflow port (8); the first feed chamber (3) and a first discharge chamber (4) through the bottom of the first horizontal bore communicating (10), a second the feed chamber (5) and the second discharge chamber (6) at the bottom communicates by means of a second horizontal hole (11); the first horizontal bore (10) and a second horizontal hole (11) to the top at the same level; shunt plate (2) to the top is not less than a first horizontal bore (10) to the top, 不高于第一溢流口(7)底端;所述第一出料室(4)、第一进料室(3)、第二进料室(5)、第二出料室(6)底面均为带风帽的布风板,布风板下方分别设置与所述第一出料室(4)、第一进料室(3)、第二进料室(5)和第二出料室(6)相对应的风室,风室内通入流量可调节的流化风; 所述外置换热器(200)包括:设置在外置换热器内的一竖直的折流板(12),所述折流板(12)上端与外置换热器顶面之间留有气流平衡孔(13),并将外置换热器内腔分为外置换热器第一室(20)和外置换热器第二室(21),所述外置换热器第一室(20)上部与第二溢流口(8)相通,底部与外置换热器第二室(21)相通,所述外置换热器第二室(21)上部通过第三溢流口(9)与炉膛相通;所述外置换热器第一室(20)和外置换热器第二室(21)底面均为带风帽的布风板,布风板下方分别与所述外置换热器第一室(20)和外置换热器第二室 No higher than the first overflow port (7) a bottom end; the first discharge chamber (4), a first feed chamber (3), second feed chamber (5), a second discharge chamber (6 air distribution plate) bottom surface are hooded, below the air distribution plate are respectively provided with the first discharge chamber (4), a first feed chamber (3), second feed chamber (5) and the second the feed chamber (6) corresponding to the plenum, air chamber into a regulated flow of fluidizing air; the external heat exchanger (200) comprising: providing an outer replacement baffle (12 a vertical in the heat ), the baffle (12) is left to balance the flow aperture (13) between the upper and EHE top surface, and an external heat exchanger lumen into EHE first chamber (20) and (21), the external heat exchanger of the first chamber (20) EHE second chamber upper portion and a second overflow port (8) communicates, at the bottom and an external heat exchanger of the second chamber (21) communicates, the said external heat exchanger of the second chamber (21) an upper portion in communication with the furnace through the third relief port (9); the external heat exchanger of the first chamber (20) and the external heat exchanger of the second chamber (21) bottom surface are for the air distribution plate with a hood, below the air distribution plate respectively the external heat exchanger of the first chamber (20) and the external heat exchanger of the second chamber (21)相对应的风室,风室内通入流量可调节的流化风。 (21) corresponding to the plenum, air chamber into a regulated flow of fluidizing air.
  2. 2、 按权利要求项1所述的气动控制进灰的外置换热器,其特征在于,所述分流板(2)将分离器料腿(1)在第一进料室(3)和第二进料室(5)底面上的投影分成的两个部分的面积之比为0.25—4.0。 2, according to claim pneumatic according to a demand control into the gray external heat exchanger, characterized in that said diverter plate (2) the separator dipleg (1) in the first feed chamber (3) and (5) than the two feed chamber area of ​​the two portions of the projected bottom surface into a 0.25 to 4.0.
  3. 3、 按权利要求项1所述的气动控制进灰的外置换热器,其特征在于,所述外置换热器第一室(20)与外置换热器第二室(21)横截面积之比为0.05—20.00。 3, according to claim pneumatic according to a demand control into the gray external heat exchanger, characterized in that the external heat exchanger of the first chamber (20) and an external heat exchanger of the second chamber (21) cross-sectional area ratio of 0.05 to 20.00.
CN 200510102905 2005-09-13 2005-09-13 Pneumatic controlling ash-in external heat exchanger CN100427825C (en)

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CN103423737B (en) * 2012-05-25 2016-09-14 中国科学院工程热物理研究所 Dispensing valve with pneumatic control of the circulating fluidized bed system and the circuit system of the circulating fluidized bed

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