Single Drum Coal Fired Hot Water Boiler Energy Saving Coal Stoker Boiler

Easily serviceable single-drum DZH coal fired steam boiler for parboiling rice mill

Description

The coal-fired boiler developed by our company uses negative pressure and gasification technology to make the soot fully mixed with oxygen at high temperature. A secondary combustion chamber is arranged inside the furnace, and the unburned soot (gas) and the coal slag can be burned for the second time, thereby achieving the effect of energy saving. At the same time, the equipment adopts three-pass water-fire tube heat exchange technology, which reduces the flue gas discharge temperature (less than 110 degrees). The boiler operates at normal pressure and adopts an automatic temperature control system to facilitate temperature adjustment. The product has high performance, beautiful appearance and compact structure. The coal-fired boiler is composed of a pulverized coal preparation system, a burner, a heating surface, and an air preheater.

Features
1. The application of advanced technology can quickly form a high temperature zone inside the boiler, stably maintain the combustion state of the fuel, ensure that the flue gas can stay in the high temperature furnace for a long time, the fuel is fully burned, and the combustion efficiency is high.

2. The emission concentrations of soot and sulfur dioxide are not more than 10mg/m3 and 50mg/m3 respectively, which reduces air pollution.

3. The application of automatic feeding and slag removal equipment can fully automate the boiler work. At the same time, the boiler can work continuously for 4,000 hours without maintenance, and the work is stable and reliable.

4. Take effective measures to prevent high temperature corrosion and low temperature corrosion. The company has taken a lot of measures to prevent corrosion during boiler design. At the same time, the heated surface adopts high-grade corrosion-resistant materials. For example, high-temperature three-stage and four-stage superheater materials are all made of stainless steel SA-213TP347H, and air preheater materials are used. JNS is resistant to sulfuric acid dew point corrosion steel (having resistance to sulfuric acid and hydrochloric acid).

5. Adopt international leading dust collector technology. The dust collector technology developed by the company has the characteristics of high ash removal efficiency, compact structure, small floor space and flexible layout. After the dust is removed from the dust, the discharge fully meets the environmental requirements.

6. The boiler body is automatically welded by argon arc welding process, 100% non-destructive testing, excellent quality.

Structure classification of pulverized coal burner

The pulverized coal burner is a device that feeds pulverized coal into the furnace for combustion, and can be classified into a cyclone burner and a direct-flow burner. The following is a detailed description of the two burners.
1. Swirling burner. The primary air carrying pulverized coal and the secondary air without pulverized coal are connected to the burner by different pipes. The pulverized coal and air can be thoroughly mixed and form a re-circulation zone. Each boiler can be configured with 4 to 48 burners.

2. DC burner: The nozzle is narrow, and the primary and secondary air do not rotate in the burner. The pulverized coal can be completely burned therein.
The heated surface separates the heated surface from the heated surface and the heated surface. Modern large and medium-sized boilers are constructed of water-cooled walls, whereby the water-cooled wall (the heated surface) absorbs the radiant heat in the furnace to evaporate the water into saturated steam. In order to increase the radiant heating surface without increasing the volume of the furnace, the large boiler can be double-exposed water-cooled wall. The superheated heating surface can be divided into a screen type superheater heating surface arranged on the upper part of the furnace and a convection superheater heating surface arranged in the convection flue. The former absorbs radiant heat in the furnace; the latter absorbs convective heat.

Fault diagnosis and processing system features
The system can monitor the current working conditions of the gas steam boiler in real time, and carry out real-time and comprehensive intelligent fault identification and processing. The control system is capable of diagnosing and processing the following faults in real time.
1). Steam pressure over-limit protection: When the steam in the pot is over-pressure, the control system immediately enters the equipment to stop working, and the sound and light alarm is given. The screen displays “Vapor pressure is extremely high”. Until the fault is eliminated, press the reset button to cancel the alarm state.

2). Water shortage protection: When the boiler has a low water level failure due to pump failure or other reasons, the control system immediately turns off the burner power supply, enters the interlocking state, sound and light alarm until the fault is eliminated, and then press the reset button to cancel the alarm state.

3). Boiler water level over-limit protection: When the water level is higher than the upper limit warning water level, the sound and light alarm. Prompt "the water level in the pot is too high", the display prompts drainage, and the pump starts to drain. The fault is automatically restored after the fault is eliminated, and the pump stops working.

Data table 1

Yongxing Boiler Group Co., Ltd. is a group company specializing in research, development, manufacturing, sales and installation services for various boilers and various thermal energy machinery and equipment.

Yongxing Boiler occupies an area of 60,000m2, with fixed assets of 15 million dollars, and is used for more than 100 sets of large and medium-sized equipment for production. More than 60 sets of advanced equipment for product quality inspection, with 37 series. The boiler and pressure vessel contains 167 specifications and models.

With A-class boiler manufacturing license issued by the General Administration of Quality Supervision, Inspection and Quarantine

A1 and A2 pressure vessel manufacturing licenses

The first-class boiler installation and transformation license

The ISO9001 international quality system certification and so on.

Annual production capacity is over 2000 tons.

YONGXING boiler main product:

Coal fired steam boilers, oil/gas steam boiler,hot water boilers, Thermal oil heaters, hot air furnace, oil/gas burners,chain grate accessories, and other environmentally friendly boilers and pressure vessels .

All the equipment are strictly enforced by the state and Industry standard, reasonable product design, advanced production technology, technical content in the country's similar products in a leading position, with compact structure, low noise, high thermal efficiency, safe and reliable operation, high degree of automation, etc.

All environmental indicators are in line with the national class I regional environmental protection standards require excellent products recommended by the environmental protection department.

Our company holds A-class boiler manufacturing qualification, A1, A2 pressure vessel manufacturing qualification and mechanical and electrical equipment installation engineering professional contracting qualification, and passed the international ISO9001 2000 quality management system certification.

Our company strictly follows the ISO9001 international quality management system guarantee model, carries out quality management and quality inspection and control activities, and the product quality is stable. It was rated as “Contract-honoring and Promise-keeping Enterprise” by the Henan Provincial Administration of Industry and Commerce, “National Honest and Law-abiding Enterprise” by the Ministry of Agriculture, and was included in the member unit by the China Quality and Technical Supervision Association, and has obtained a number of patented technologies.

Company honor: