WO2013143347A2 - 一种新型发电系统 - Google Patents

一种新型发电系统 Download PDF

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Publication number
WO2013143347A2
WO2013143347A2 PCT/CN2013/000337 CN2013000337W WO2013143347A2 WO 2013143347 A2 WO2013143347 A2 WO 2013143347A2 CN 2013000337 W CN2013000337 W CN 2013000337W WO 2013143347 A2 WO2013143347 A2 WO 2013143347A2
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Prior art keywords
boiler
water tank
water
heat
exhaust fan
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PCT/CN2013/000337
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English (en)
French (fr)
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WO2013143347A3 (zh
Inventor
赵文志
Original Assignee
Zhao Wenzhi
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Application filed by Zhao Wenzhi filed Critical Zhao Wenzhi
Publication of WO2013143347A2 publication Critical patent/WO2013143347A2/zh
Publication of WO2013143347A3 publication Critical patent/WO2013143347A3/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B13/00—Steam boilers of fire-box type, i.e. the combustion of fuel being performed in a chamber or fire-box with subsequent flue(s) or fire tube(s), both chamber or fire-box and flues or fire tubes being built-in in the boiler body
    • F22B13/02—Steam boilers of fire-box type, i.e. the combustion of fuel being performed in a chamber or fire-box with subsequent flue(s) or fire tube(s), both chamber or fire-box and flues or fire tubes being built-in in the boiler body mounted in fixed position with the boiler body disposed upright
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B13/00—Steam boilers of fire-box type, i.e. the combustion of fuel being performed in a chamber or fire-box with subsequent flue(s) or fire tube(s), both chamber or fire-box and flues or fire tubes being built-in in the boiler body
    • F22B13/005—Steam boilers of fire-box type, i.e. the combustion of fuel being performed in a chamber or fire-box with subsequent flue(s) or fire tube(s), both chamber or fire-box and flues or fire tubes being built-in in the boiler body with flues, other than fire tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • F23J15/04—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material using washing fluids

Definitions

  • the invention relates to an efficient and environmentally friendly power generation system. Background technique
  • the flue gas generated by the boiler in thermal power generation enters the atmosphere through the chimney, pollutes the environment and affects the health of the people; the residual gas generated in power generation, some units use it to heat the water for bathing or heating, although some heat is used, although some heat is used, The residual heat is still underutilized.
  • the system makes full use of waste heat to achieve environmental protection, low power generation costs and high efficiency.
  • a novel power generation system includes a boiler, a steam turbine generator, an exhaust fan and a hot water collection tank; water vapor generated by the boiler is sent to the steam turbine through a pipeline and drives the power generation thereof, the tail steam discharged from the steam turbine generator and the smoke discharged from the boiler The gas is transported to the exhaust fan through the pipeline, and is sent to the hot water collecting tank through the exhaust fan and the pipeline.
  • the hot water tank is filled with the stone containing calcium carbonate as the main component, and the mixed gas and heat sent by the exhaust fan.
  • the water in the water tank is thoroughly mixed, and the water in the hot water tank absorbs the residual heat in the mixed gas, and the sulfur dioxide and nitrogen dioxide in the mixed gas react with water to form sulfuric acid, nitric acid, etc., and then react with the calcium carbonate stone to become harmless.
  • the cleaned gas is discharged from the hot water tank;
  • the hot water tank can also be set as a heat exchanger, that is, the mixed gas
  • Some thin tubes exchange heat with the water in the hot water tank; after a stone and additional industrial sodium carbonate or lime water are discharged into the air, zero discharge can be achieved; Hydrothermal efficiency can reach 90%, water contains a small amount of sulfur dioxide and nitrogen dioxide to the boiler cleaning in turn, is provided on the heat collector tank filler opening.
  • the bottom wall of the heat exchange water tank above the boiler furnace is an arc-shaped curved surface of the upward arch
  • the top wall of the heat exchange water tank is a downward curved curved surface
  • the heat exchanger water tank drain valve is arranged on the side wall of the boiler, and the boiler is provided with
  • the heat exchange pipe connected to the furnace passes through the top wall of the heat exchange water tank and is connected with the boiler exhaust pipe.
  • the top wall of the heat transfer water tank and the surrounding boiler casing form a boiler water supply pre-storage water tank, and the boiler water supply pre-storage water tank carries the heat collection
  • the water supply port connected to the water tank is provided with a pre-storage water level control valve, and a water supply valve is arranged on the top wall of the boiler heat exchange water tank in the boiler water refilling water tank, and the water supply valve is set to be controlled by a spring; the double end concave design is suitable for various high pressure storage Cans, material saving, low welding requirements.
  • the hot water collecting tank is located above the boiler water supply tank, and the hot water collecting tank uses gravity to inject water into the boiler water filling tank.
  • the mixed gas input port of the hot water collecting tank connected to the exhaust fan is located at a lower portion of the hot water collecting tank, and is connected with a cloth air pipe disposed near the bottom of the hot water collecting tank, and the mixed gas is uniformly distributed on the air distributing pipe.
  • a plurality of gas discharge ports are diffused into the water in the hot water collecting tank, and a reticulated bubble refining layer is further disposed above the gas collecting pipe in the collecting hot water tank.
  • the invention combines the boiler flue gas with the tail steam of the steam turbine generator and inputs the specially set water collecting tank, thereby utilizing the waste heat in the mixed gas and recovering the moisture in the tail steam, and removing the cloud at the same time.
  • the acid gas polluting the air purifies the flue gas and makes clean emissions. Therefore, the power generation system of the present invention has the advantages of high efficiency and environmental protection.
  • FIG. 1 is a schematic structural view of a power generation system of the present invention.
  • FIG. 2 is a schematic view of the structure of the boiler top fill valve. detailed description
  • the present invention is a novel power generation system including a boiler 1, a steam turbine generator 24, an exhaust fan 15 and a hot water collecting tank 27; the bottom wall 3 of the heat exchange water tank 5 above the boiler furnace 2 is The curved surface of the upward arch, the top wall 6 of the heat exchange water tank 5 is a downward curved curved surface, and the heat exchanger water tank drain valve 26 is arranged on the side wall of the boiler, and the heat exchange pipe 4 communicating with the furnace in the boiler is replaced.
  • the top wall 6 of the hot water tank is connected to the boiler exhaust pipe 10, and the top wall 6 of the heat exchange water tank and the surrounding boiler casing form a boiler water replenishing water tank 7, and the water supply port 11 of the boiler water replenishing water tank 7 passes through the pipeline and the hot water tank 27
  • the water supply tank 17 of the water purification tank 17 to which the secondary purification is added is connected to the water outlet 29, and the water in the water supply tank 17 is infiltrated from the hot water tank 27 through the partition plate 18 having the dust activated carbon or the like at the upper end.
  • the pre-storage water level control valve 9 is provided in the hydration pre-storage water tank 7, and the control valve 9 adopts the existing float-type water level control valve, similar to the hydration control valve of the hot water collection tank 27, and the hot water collection tank 27 is filled up to Calcium carbonate is the main
  • the stones are discharged into the hot water tank 27 by the exhaust fan 15 and purified by the stone and water endothermic reaction, and then discharged from the exhaust pipe 31 and the input pipe 28 on the secondary purifier through the bubble refining layer 34.
  • the secondary purification tank 32 having water calcium carbonate stone and industrial sodium carbonate or lime water is discharged from the exhaust port 33, and a water supply valve 8 is disposed on the top wall 6 of the boiler heat exchange water tank in the boiler water supply pre-storage water tank 7.
  • the steam outlet port 12 on the boiler heat exchange water tank 5 is connected to the input port 25 of the turbine generator 24 via a pipe, and the exhaust gas discharge port 23 of the turbine generator 24 is connected to an input port 13 of the exhaust fan 15 via a pipe, and the boiler row
  • the outlet of the pipe 10 is connected to the other input port 14 of the exhaust fan 15 via a pipe, and the outlet 16 of the exhaust fan 15 is connected to the mixed gas inlet 22 of the hot water tank 27 via a pipe.
  • the mixed gas input port 22 on the hot water tank 27 is connected to the lower part of the hot water tank, and is connected to the air distribution duct 21 disposed near the bottom of the hot water tank 27, and the air distribution duct 21 may be a single root or may be a plurality of gas arrangings 20 arranged in a network, a plurality of gas discharge ports 20 uniformly distributed on the gas distribution pipe 21, and a bubble refining layer 19 composed of a wire mesh is disposed above the gas distribution pipe 21 in the hot water collecting tank 27 to collect heat.
  • the water tank 27 is provided with a water inlet 30 and a gas discharge port 31 at the upper portion.
  • the hot water collecting tank 27 is located above the boiler hydration pre-storage water tank 7, and the hot water collecting tank 27 uses gravity to inject water into the boiler hydration pre-storage water tank 7.
  • the water vapor generated by the boiler heat exchange water tank 5 is piped to the turbine generator 24 and drives it to generate electricity, and the tail gas discharged from the steam turbine generator 24 and the flue gas discharged from the boiler 1 are respectively delivered to the exhaust fan 15 through the pipeline.
  • the boiler flue gas and the tail gas are mixed in the exhaust fan 15 and sent to the hot water collecting tank 17 through the pipeline.
  • the mixed gas is dispersed from the gas discharge port 20 on the gas distribution duct 21.
  • the air bubbles which are dispersed and discharged are further refined into finer bubbles by the bubble refining layer 19 during the floating process, and finally discharged from the discharge port 29 after floating out of the water surface.
  • the mixed gas is fed from the input to the floating to the final discharge process, and the water and gas carried by the mixture is recovered, the residual heat is absorbed, the mixed gas is purified, and finally discharged.
  • the power generation system of the invention can design the upper and lower walls of the boiler heat exchange water tank 5 to have a curved curved structure which is recessed into the water tank, thereby improving the pressure resistance of the boiler heat exchange water tank.
  • the double-end concave design of the boiler used in the invention has the characteristics of material saving, low welding requirement and low manufacturing cost, and is suitable for various high-pressure storage tanks; the residual gas of the steam turbine is mixed with the boiler flue gas and sent to the hot water collecting tank , can receive the combined effect of recovering moisture, absorbing waste heat and purifying flue gas.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Treating Waste Gases (AREA)

Abstract

一种新型发电系统，包括锅炉、汽轮发电机、排风机和集热水箱；锅炉产生的水蒸汽经管道输送给汽轮发电机并驱动其发电，汽轮发电机排出的尾气及锅炉排出的烟气分别经管道输送到排风机，并通过排风机及管道送入集热水箱，在集热水箱内装满以碳酸钙为主要成分的石子，由排风机送入的混合气与集热水箱的水充分混合、集热水箱的水吸收混合气中的余热，混合气的二氧化硫和二氧化氮等与水反应成硫酸和硝酸等，再与碳酸钙石子反应成无害的碳酸钙，硝酸钙和二氧化碳等，并同时清洁混合气中的烟尘等杂质，该系统能充分利用余热，热效率可达90%以上，净化效果好。

Description

一种新型发电系统 技术领域
本发明涉及一种高效环保发电系统。 背景技术
火力发电中锅炉产生的烟气经烟囱进入大气中， 污染环境， 影响人民身体健康； 发电中 产生的余气， 某些单位用它把水加热以供洗澡或取暖， 虽然利用了一部分余热， 但余热仍未 被充分利用。 发明内容
本发明的目的是提供一种新型发电系统。 该系统充分利用余热， 实现环保、 发电成本低 和高效益。
本发得的目的是通过以下技术方案实现的：
一种新型发电系统， 包括锅炉、 汽轮发电机、 排风机和集热水箱； 锅炉产生的水蒸气经 管道输送给汽轮机并驱动其发电， 汽轮发电机排出的尾汽及锅炉排出的烟气分别经管道输送 到排风机， 并通过排风机及管道送入集热水箱， 在集热水箱上内装满以碳酸钙为主要成分的 石子， 由排风机送入的混合气与热水箱内的水充分混合， 集热水箱中的水吸收混合气中的余 热， 混合气中的二氧化硫和二氧化氮等与水反应成硫酸和硝酸等， 再与碳酸钙石子反应成无 害的硫酸钙、 硝酸钙和二氧化碳等， 并同时清洁混合气中的烟尘等杂质， 经清洁后的气体从 集热水箱排出； 也可将集热水箱设置成热交换器， 即混合气经若干细管与集热水箱中的水热 交换； 再经过一次石子和另外加的工业碳酸钠或石灰水排入到空气中， 可以实现零排放； 锅 炉由集热水箱补水热效率可以达到 90%以上， 补水中含有少量的二氧化硫和二氧化氮等又可 以给锅炉除垢， 集热水箱上设置加水口。
进一步， 所述锅炉炉膛上方的换热水箱底壁为向上拱的弧形曲面， 换热水箱顶壁为向下 凹的弧形曲面， 锅炉侧壁上设置有换热水箱排水阀门， 锅炉内与炉膛连通的换热管道穿过换 热水箱顶壁， 与锅炉排烟管道相连， 换热水箱顶壁与其周围的锅炉外壳构成一个锅炉补水预 存水箱， 该锅炉补水预存水箱带有与所述集热水箱相连的补水口设置预存水水位控制阀， 锅 炉补水预存水箱内的锅炉换热水箱顶壁上设置有补水阀门， 补水阀门设置成由弹簧控制； 双 端内凹设计适合于多种高压储罐， 节省材料， 焊结要求低。
进一步， 所述集热水箱位于所述锅炉补水箱的上方， 集热水箱利用重力给锅炉补水箱注 水。
进一步， 所述集热水箱与所述排风机相连的混合气输入口位于集热水箱下部， 并与集热 水箱内靠近其底部设置的布气管相连， 混合气通过布气管上均布的若干气体排出口呈弥散状 输入到集热水箱内的水中， 集热水箱内在布气管上方还设置有网状气泡细化层。
本发明通过将锅炉烟气与汽轮发电机的尾汽进行混合并输入专门设置的集热水箱后， 既 利用了混合气中的余热， 又回收了尾汽中的水分， 同时除云了污染空气的酸性气体， 净化了 烟气， 作到了清洁排放， 因此本发明发电系统具有高效、 环保的优点。 附图说明
图 1为本发明发电系统结构示意图。
图 2为锅炉顶补水阀结构示意图。 具体实施方式
下面结合附图及实施进一步说明本发明。
如说明书附图所示， 本发明是一种新型发电系统， 包括锅炉 1、 汽轮发电机 24、 排风机 15和集热水箱 27; 锅炉炉膛 2上方的换热水箱 5的底壁 3为向上拱的弧形面，换热水箱 5的 顶壁 6为向下凹的弧形曲面， 锅炉侧壁上设置有换热水箱排水阀门 26， 锅炉内与炉膛连通的 换热管道 4穿过换热水箱顶壁 6， 与锅炉排烟管道 10相连， 换热水箱顶壁 6与其周围的锅炉 外壳构成一锅炉补水预存水箱 7， 锅炉补水预存水箱 7的补水口 11通过管道与集热水箱 27 中的加有二次净化的碳酸钙石子等的补水箱 17输出水口 29相连，补水箱 17中的水是经过上 端设有虑尘活性炭等的隔板 18从集热水箱 27中渗入， 锅炉补水预存水箱 7内设置有预存水 水位控制阀 9，该控制阀 9采用现有的浮球式水位控制阀，与集热水箱 27的补水控制阀相似， 集热水箱 27中加满以碳酸钙为主要成分的石子，由排风机 15排入集热水箱 27的混合气经石 子和水吸热反应净化以后从排气管 31和二次净化器上的输入管 28经气泡细化层 34排入装有 水碳酸钙石子和工业碳酸钠或石灰水的二次净化箱 32二次净化从排气口 33排出， 锅炉补水 预存水箱 7内的锅炉换热水箱顶壁 6上设置有补水阀门 8。
锅炉换热水箱 5上的蒸气输出口 12经管道与汽轮发电机 24的输入口 25相连，汽轮发电 机 24的尾气排出口 23经管道与排风机 15的一个输入口 13相连，锅炉排烟管道 10出口经管 道与排风机 15的另一个输入口 14相连，排风机 15的输出口 16经管道与集热水箱 27上的混 合气输入口 22相连。
集热水箱 27上的混合气输入口 22位集热水箱下部，并与集热水箱 27内靠近其底部设置 的布气管道 21相连， 布气管道 21可以是单根， 也可以由排列成网状的若干根构成， 布气管 道 21上均布的若干气体排出口 20 , 集热水箱 27内在布气管道 21上方还设置有由丝网构成 的气泡细化层 19， 集热水箱 27上部设置有加水口 30和气体排放口 31。
集热水箱 27位于锅炉补水预存水箱 7的上方， 集热水箱 27利用重力为锅炉补水预存水 箱 7注水。
工作时，锅炉换热水箱 5产生的水蒸汽经管道输送给汽轮发电机 24并驱动其发电，汽轮 发电机 24排出的尾汽及锅炉 1排出的烟气分别经管道输送到排风机 15， 锅炉烟气和尾汽在 排风机 15内混合并经管道被送入集热水箱 17， 在集热水箱 17内， 混合气从布气管道 21上 的气体排出口 20呈弥散状排入集热水箱 17内的水中，弥散排出的混合气气泡在上浮过程中， 经气泡细化层 19进一步细化成更加细小的气泡， 并最终浮出水面后从排放口 29排放。 在集 热水箱 27内，混合气从输入到上浮到最终排放过程中，其所携带的水气补回收、余热被吸收、 混合气被净化， 并最后被清洁排放。
在锅炉工作过程中， 锅炉补水预存水箱 7内始终储存有定量的水， 锅炉补水预存水箱 7 内的水位由控制阀 9控制。 当锅炉换热水箱 5内缺水时， 停机并使换热水箱 5卸压后， 通过 补水阀门 8将锅炉补水预存水箱 7内储存的定量的水注入换热水箱 5， 锅炉顶补水阀由弹簧 35， 阀门 36和限位设置 37， 6是锅炉顶剖面图。
当锅炉补水预存水箱 7排空后，集热水箱 17中的水利用重力自动注入锅炉补水预存水箱 7。 而当集热水箱 27中缺水时， 则通过加水口 30为其加水。
本发明发电系统将锅炉换热水箱 5的上、下壁设计为均向水箱内凹陷的弧形曲面结构后， 可提高锅炉换热水箱的耐压能力。 本发明中所用锅炉双端内凹设计， 具有节省材料， 焊接要 求低， 制造成本低的特点， 适合于多种高压储罐； 将汽轮机的余气与锅炉烟气混合后送入集 热水箱， 可收到回收水分、 吸收余热和净化烟气的综合效果。

Claims

权 利 要 求 书
1.一种新型发电系统， 其特征在于该系统充分利用余热， 实现环保、 高效益， 本实用新 型的目的是通过以下技术方案实现的： 包括锅炉、 汽轮发电机、 排风机和集热水箱； 锅炉产 生的水蒸汽经管道输送给汽轮发电机并驱动其发电， 汽轮发电机排出的尾汽及锅炉排出的烟 气分别经管道输送到排风机， 并通过排风机及管道送入集热水箱， 在集热水箱内装满以碳酸 钙为主要成分的石子， 由排风机送入的混合气与集热水箱内的水充分混合， 集热水箱中的水 吸收混合气中的余热， 混合器中二氧化硫和二氧化氧等与水反应成硫酸和硝酸等， 再与碳酸 钙石子反应成无害的硫酸钙， 硝酸钙和二气化碳等， 并同时清洁混合气中的烟尘等杂质， 经 清洁后的气体从集热水箱排出， 再经过一次石子和另外加的工业碳酸纳或石灰水净化排放到 空气中， 可以实现零排放； 锅炉由集热水箱补水热效率可以达到 90%以上， 初水中含有少量 的二氧化硫和二氧化氮等又可以给锅炉除垢， 集热水箱上设置加水口； 所述锅炉炉膛上方的 换热水箱底壁为向上拱的弧形曲面， 换热水箱顶壁为向下凹的弧形曲面， 锅炉侧壁上设置有 换热水箱排水阀门，锅炉内与炉膛连通的换热管道穿过换热水箱顶壁， 与锅炉排烟管道相连， 换热水箱顶壁与其周围的锅炉外壳构成一锅炉补水预存水箱， 该锅炉补水预存水箱带有与所 述集热水箱相连的补水口及能控制预存水位的水位控制阀， 锅炉补水预存水箱内的锅炉换热 水箱顶壁上设置有补水阀门。
2.根据权利要求 1所述的一种新型发电系统， 其特征是锅炉主体是双端弧形内凹， 此造 型抗压能力高， 节省材料， 焊接要求低， 适合于多种高压储罐。
3.根据权利要求 1所述的一种新型发电系统， 其特征是用以碳酸钙为主要成分的石子和 水将酸性二氧化硫和二氧化氮等污染成分转化成无害物， 以达到治理污染的目的， 此方法适 合于多种污染治理项目。
4.根据权利要求 1所述的一种新型发电系统， 其特征是设置有二次将化排放器， 实现零 排放。
PCT/CN2013/000337 2012-03-31 2013-03-22 一种新型发电系统 WO2013143347A2 (zh)

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