New type of high efficient pulverized coal fired boiler system adopts the pulverized coal concentration for powder preparation, precision and grade of air combustion, furnace desulfurization denitration, vertical or horizontal boiler heat transfer, efficient dust, flue gas desulfurization and denitration process automatic control and other advanced technology, has realized the efficient operation of coal-fired boiler and clean emission. Due to energy conservation and environmental protection, higher cost performance advantages, has been widely used in heating heating, steam generating, etc, and gradually replace the chain boiler and oil-fired boiler, have the potential of alternative gas boiler at the same time. Now used in various fields of hot water boiler series (7 mw - 70 mw), steam boiler series (2 t/h - 100 t/h), the power plant boiler series (10 t/h - 100 t/h), such as dozens of new efficient pulverized coal fired boiler system, the market reaction is good.
技术优势 Technical advantages
煤粉燃尽率达 98% 以上，锅炉热效率达 90% 以上，与传统燃煤锅炉相比，节能 30% 以上：
Energy conservation and efficient
Pulverized coal burning rate is above 98%, the boiler thermal efficiency is above 90%, compared with traditional coal-fired boiler, energy saving more than 30% :
Economical use of land
Pulverized coal by concentrated grinding milling factory, unified distribution. Cancel the dispersed coal and guarantee the quality of pulverized coal and the stability of the supply; Slag slag fall to the ground, the cancellation of the original area bigger, economical use of land and investment:
Airtight operation in the system, centralism powder, automatic powder, concentrated ash discharge. Equipped with cloth bag dust catcher, desulfurization and denitration system can be done in full system "without coal, anthracite, no ash, no powder".
A high degree of automation
Adopt modern automatic control technology, boiler milling, powder, burning and dust removal, desulfurization and denitration, ash discharge and security automation control, can do is drive is stopped. For high-end requirements of users, but also can realize on-line monitoring, unattended.
High cost performance
Compared with common furnace type on the market at present, the system of high efficiency and low operating cost, can recover the investment costs in a short period of time.
环保指标 Environmental indicators
经济性分析 Economic analysis
2、按单台 40/h 锅炉年运行 5000 小时、锅炉满负荷计算年燃料成本；
系统工艺流程 System process
After the raw coal into coal pulverizing workshop (drying) grinding as needed by the boiler combustion of pulverized coal, qualified pulverized coal injection of pulverized coal storage, then through coal storehouse through blanking tube, feed valve into the spiral feeder into impact flowmeter, by the impact after the flowmeter measurement into spiral pneumatic conveying pump feed box, then move forward by feeding device. Pulverized coal into the mixing chamber after be carried in fan outlet air into the pipeline, thus into combustion burner. Of high temperature flue gas after completion of radiation and convection heat transfer into the denitration, dust removal and desulfurization system, and then through the chimney emissions into the atmosphere. The filter's collection of fly ash discharge by the closed system, and centralized processing and utilization.
1- 罐车；2- 燃料罐；3- 供料器；4- 二次风机；5- 二次风管；6- 二次风控制器；
7- 点火油箱；8- 燃烧器；9- 锅炉本体；10- 布袋除尘器；11- 烟囱；12- 罐车
系统简介 System introduction
制粉系统的目的是依据来煤情况及锅炉燃烧要求，通过烘干及研磨处理达到符合锅炉要求的煤粉：一般情况下磨粉机对煤粉要求为：入料小于 30mm，含水量小于 8%，哈氏可磨指数 55-65；当水分大于 8% 时需烘干设备。
The coal pulverizing system
Coal pulverizing system is the purpose of according to situation and the requirement of boiler combustion, by drying and grinding processing to meet the needs of the pulverized coal boiler: usually mill of pulverized coal for: the material is less than 30 mm, water content is less than 8%, hartz can grind index of 55-65; When the moisture is more than 8% when drying equipment.
Powder raw material - forklift - buffer bin - feeder - mill system to roots blower and screw conveyor, finished product tank
储送系统的关键在于给料均匀：当给煤量波动幅度大于 ±5% 时，锅炉就会产生脉动，甚至会出现呼吸现象。作为影响
给煤均匀性的关键设备，优良的给料阀能将给煤量波动幅度控制在 ±2% 以内。储送工艺流程：
Send storage system is the key to feeding uniform: when the coal amplitude fluctuation is more than plus or minus 5%, the boiler will generate ripple, even breathing. As the key to affect the uniformity of feeding coal equipment, our company chooses the feeding valve can give coal volatility control within±2%.
Store send process flow:
Qualified pulverized coal - closed tank car - sea coal tower - warehouse - blanking tube - feed valve to feeder, impact flowmeter to mixing chamber, the burner.
更低 NOX 排放：采用分级配风和烟气再循环技术，低氮燃烧可使 NOx 初始排放浓度仅为 150mg/m3。内置预燃室提高了煤粉温度、加强了煤粉与空气的混合，煤粉燃尽率可达 98% 以上。
锅炉负荷调节范围大：燃烧器的调节比为 1:4，锅炉保证负荷调节范围为 25%-110%。
Pulverized coal fired boiler combustion system is the key to efficient pulverized coal furnace equipment. Mainly including burner, a secondary air, firing gun, fire detection equipment, etc. Pulverized coal boiler burner has the following advantages:
Lower NOX emissions: adopt grading air distribution and flue gas recycling technology, low nitrogen combustion can make the initial discharge concentration NOX is only 150 mg/m3.
Built-in precombustion chamber raised the pulverized coal temperature, strengthened the mixture of pulverized coal and air, coal burning rate can reach more than 98%.
Flame is short, the length and diameter of adjustable: can fit all kinds of furnace type (vertical, horizontal) and arrangement (overhead, bottom, horizontal layout).
No coking, no explosion, high safety coefficient.
Large range of boiler load adjustment, the adjustment of the burner ratio of 1:4, boiler load adjustment range is 25% 110%.
测控系统由传感器、PLC、智能模块、数据总线、上位计算机、主控柜和 PLC 柜等组成，同时兼容个别 PID 调节器。煤粉热水锅炉的控制，具有锅炉水位自动控制、燃烧经济性自动控制、炉膛负压自动控制、缺水保护等自动联锁保护功能。煤粉蒸汽锅炉的控制，具有锅炉水位自动控制、燃烧经济性自动控制、炉膛负压自动控制、蒸汽超压、缺水保护等自动联锁保护功能。
安全系统主要包括燃烧安全管理及煤粉安全。燃烧安全管理是通过 DCS 集成的管理系统完成。煤粉安全主要是煤粉塔的安全，通过设置 C02、N2 惰性气体保护站，用惰性气体杜绝塔内煤粉与氧气的接触，以保证煤粉不爆燃：采用严格的静电接地保护措施，以保证塔内不产生电火花引燃煤粉；设置温度测点，与安全系统联锁，确保塔内煤粉安全。
Measurement and control system
Measurement and control system consists of sensors, PLC, intelligent modules, data bus, upper computer, PLC control cabinet and cabinet, etc, and is compatible with individual PID regulator. Pulverized coal fired hot water boiler, the control of boiler water level automatic control, automatic combustion efficiency automatic control, hearth negative pressure control, automatic interlock protection functions such as water shortage protection. Pulverized coal fired steam boiler, the control of boiler water level automatic control, automatic combustion efficiency automatic control, hearth negative pressure control, steam overpressure, automatic interlock protection functions such as water shortage protection.
Security system mainly includes the pulverized coal combustion safety management and safety. Combustion safety management is completed through the DCS integration management system. Sea coal safety mainly security of the tower, by setting up our fleet, N2, inert gas protection station, pulverized coal and oxygen with inert gas to eliminate tower contact, to ensure the coal powder explosion: not adopt strict electrostatic grounding protection measures, to ensure no electric spark ignition pulverized coal tower; Set the temperature measuring point, and safety interlock system, ensure the security of the pulverized coal tower.
The boiler system
System of the boiler by the feed water system, smoke wind system, flue gas purification system, ash and boiler host system, etc.
Water supply system
The role of water supply system is the raw water for processing, to the boiler feed water into the boiler after water quality standards. Water supply equipment including pumps, tanks, water supply pipeline, water treatment equipment, oxygen equipment, dosing equipment, etc.
Smoke wind system
Boiler smoke wind system is continuously provide boiler air, and distribution according to the requirements of the combustion air volume, and make the air containing dust combustion generated after the heating surface and flue gas purification device, finally through the chimney to the atmosphere. Smoke wind system device contains fan and induced draft fan and supporting smoke duct, etc.
Flue gas purification system
Flue gas purification system is used to remove entrained in the boiler flue gas solid particles (fly ash), harmful substances such as sulfur dioxide, nitrogen oxides, make it meet the national discharge standard. Flue gas purification system equipment including bag dust removal, desulfurization and denitration equipment such as:
Boiler body and dust fly ash collected by library focus on conveyer into ashes.
The host system of boiler
By drum boiler body, heating surface and its header and connection pipe, furnace and air preheater (including flue and duct), structure (including platform and ladder), furnace wall, etc as a whole.
New type of high efficiency and energy saving environmental protection technical parameters of pulverized coal fired hot water boiler
热水锅炉布置方式分为卧式和立式。考虑锅炉成本及运营的经济性，额定热功率小于 29MW 一般采用卧式水火管锅炉， 大于 29MW 的一般采用立式水火管锅炉。
Our company research and development of hot water boiler arrangement is divided into horizontal and vertical. Consider the cost and operation of boiler efficiency, thermal power rating less than 29 mw generally adopts horizontal fire and water tube boiler, greater than 29 mw general using vertical water tube boiler.
卧式水火管热水锅炉 (SZS) 技术参数表
Horizontal water tube hot water boiler (SZS) technical parameter table
立式水火管热水锅炉 (DHS) 技术参数表
Vertical water tube hot water boiler (DHS) technical parameter table
卧式水火管蒸汽锅炉 (SZS) 技术参数表
Horizontal water tube steam boiler (SZS) technical parameter table
立式水火管蒸汽锅炉 (DHS) 技术参数表
Vertical water tube steam boiler (DHS) technical parameter table
Efficient energy conservation and environmental protection are pulverized coal power plant boiler technology parameters
Our company research and development of power plant boiler, finalize the design product pressure is 3.82 MPa, respectively 5.3 MP, and is vertical water tube boiler.
立式水管电站锅炉 (SFG) 技术参数表
Vertical pipe boiler (SFG) technical parameter table
立式水管电站锅炉 (SFG) 技术参数表
Vertical pipe boiler (SFG) technical parameter table
SZL coal, gas, solid waste mixed combustion boiler technical parameters
Coal and gas mixed burning boilers
The design of boiler structure shall be in accordance with the waste composition provided by users.