Feasibility analysis of air compressor system configuration optimization in Xinglongzhuang Mine Power Plant

Feasibility analysis of air compressor system configuration optimization in Xinglongzhuang Mine Power Plant Lu Xiaoming, Zhang Shenqing, Wei Jintai, Liu Xiance Huaju Energy Xinglongzhuang Mine Power Plant, Shandong Chuzhou 272102 bag dust collector injection system provides compressed air. Due to the aging of the air compressor equipment of 1 and 2, the faults are frequent. After several repairs, the improvement of the running condition is not obvious. Based on the comparison of data and operating parameters, the feasibility analysis of the air compressor system optimization is proposed.

There are three air compressors in Xinglongzhuang Mine Power Plant. Among them, 1 and 2 air compressors have been put into operation since 2000. The equipment is aging, and the exhaust gas temperature is too high, the operating current is too low, the exhaust pressure is too low, and the computer board Faults, electrical faults, line aging, etc. After many overhauls, the improvement in operating conditions is not obvious. After considering the completion of the 5 boilers, the gas consumption of the ash conveying system increased. In 2010, an Atlas GOA90WP-7.5 air compressor was purchased. The current operating conditions are dual-use and one-off.

2 Current system gas consumption statistics Because the compressed air in the winter operation needs to be deeply dried by the adsorption dryer, the gas consumption is increased, so the gas consumption is increased compared with the rest of the season. When the specific gas consumption is as follows, the gas consumption in winter is 6.3m3/min, and the gas consumption in other seasons is 5.9m3/min. 2) When the four furnaces are running, the gas consumption in winter is 8.2m3/min, and the gas consumption in other seasons. It is 7.8m3/min; 3) When the 5 furnace is operated, the gas consumption in winter is 8.7m3/min, and the gas consumption in other seasons is 8.3m3/min; 4) When the 3rd and 4th furnaces are running, the gas consumption in winter is 14.2m3/min. In other seasons, the gas consumption is 13.8m3/min; 5) in the 3rd and 5th furnaces, the winter gas consumption is 15.2m3/min, and the other seasons gas consumption is 14.9m3/min; 6) 4, 5 furnace operation, winter gas consumption It is 17.2m3/min, and the gas consumption in other seasons is 16.8m3/min; 7) When the 3, 4, and 5 furnaces are operated, the gas consumption in winter is 23.2m3/min, and the gas consumption in other seasons is 22.7m3/min. According to the current operation status, Through careful analysis and comparison, based on the principle of energy saving and consumption reduction, an efficient and energy-saving air compressor with an hourly throughput of 16m3/mm is replaced by one of the 13m3/mm air compressors. When running, it can basically meet the demand of two 75t/h boilers, namely energy saving and power consumption reduction.

When the gas consumption in winter is large, three boilers are running at the same time. One 16m3/min air compressor and one 13m3/mm air compressor can run at the same time to meet the gas demand.

4 Description of the new air compressor 4.1 The low-speed, low-flow, low-noise, high-efficiency main engine SKY screw mainframe is developed by the North American R&D Center. It is the latest generation of screw rotor linear type, and the male rotor and the female rotor are bilaterally asymmetric. The profile curve of the profile line is all arc and its envelope. The gear ratio of the small power (矣45kW) model is 4:5, and the gear ratio of high power (55kW) is 5:6. The rotor profile has three outstanding features. Fully achieve "surface to surface" anastomosis, help to form a hydrodynamic lubricating film, reduce lateral leakage through the contact strip, improve compressor efficiency; thick top, good rigidity, help to improve rotor processing, inspection performance 2) The 2 pole motor speed and the 4 pole motor speed at 50 Hz are the core speed; the cold gap and the hot state gap fully take into account the geographical environment and climate characteristics of China; it is the world's first screw specially tailored for Asia. Mainframe; completely avoids the incompatibility of European models in China; 3) adopts the design concept of "large rotor, large bearing, low speed", not only the speed is 30% lower than that of European and American brands, the exhaust gas is exhausted. The flow speed is also much lower than that of European and American brands, so the noise and vibration are smaller, the efficiency is higher, the bearing life is longer, and the sensitivity to impurities and carbides is reduced. 4) The rotor materials are all high-grade alloy steel, grinding Processing.

4.2 The core of the electric control system of the automatic computer monitoring system adopts the special screw air compressor control computer, has self-diagnosis and protection function, and has a good human-machine Chinese display interface, which can instantly display the actual operation of the unit (such as running status, loading and unloading). , current, temperature, pressure, time, etc., can realize system self-test before start-up, and continuously and correctly monitor all working states and safety-related parameters during operation. The computer control system can prompt the user to change the maintenance information of parts (such as oil, three filters) according to the running time, real-time data tracking, historical data recording, preventive maintenance, and various parameters can be modified according to the needs of the user site ( Such as unloading pressure, loading pressure).

4.3 Electrical control system for 50Hz electric system design) Electrical components have automatic operation control function;) Solenoid valve is designed and tested according to 50Hz electric system to meet the long-term operation requirements of high temperature and high humidity conditions.

4.4 High-efficiency and energy-saving control mode When the system uses the gas volume to decrease, the system pressure begins to rise. When the controller receives the signal of the pressure rise, it begins to gradually reduce the opening degree of the intake valve. Also with the reduction, of course, the motor current is also reduced. Really achieve 24 hours of unattended, while saving a lot of energy and reducing production costs.

The controller has communication function, which can realize multi-machine joint control or remote control very conveniently. The powerful software can help optimize the operation of the air compressor network and realize the energy-saving management of the air compressor network.

Strictly in accordance with the national mandatory standard GB19153-2009 "Volume-type air compressor energy efficiency limit value and energy efficiency rating" to assess product energy consumption, the full range of product input specific power is better than or equal to the standard in the general injection screw air compressor Level 2 energy efficiency rating.

At the same time, the amount of consumables is small, only three filters (intake filter, oil filter, oil filter) an oil (lubricating oil) needs to be replaced regularly; the replacement cycle is long, under normal use conditions, the consumable life is more than 4000 hours.

U (down to page 99) 93 feet eawMl "Science and Technology Communication" basic science JAZMIN oil field and its surrounding and eastern rolling development zone with "A" layer as the main part, the northeastern part of the work area - the development position of type I reservoir is the best exploration In the area, the sedimentation of the area is dominated by braided river channels. The thickness of the sand body is relatively large, accounting for more than 70% of the reservoirs in the whole area. It has good sandstone physical properties and belongs to high-porosity and high-permeability reservoirs, which can be used as priority wells. Area. In the follow-up development of JAZMIN oilfield, more and more detailed data needs to be mastered to analyze the characteristics of the other two types of reservoirs as the basis for development and improve the yield and quality of the oilfield.

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