Analysis of Current Status of Operation of Industrial Boilers and Motors in Baotou Area--Also on Energy Saving Monitoring and Environmental Benefits

1 Abstract In this paper, taking the measured data as an example, the operation of industrial boilers and motors in Baotou area is analyzed, the impact on the environment under this condition is described, and measures to strengthen energy monitoring and energy use management are proposed. Key words energy; testing; Benefits Baotou City is a heavy industrial city and its annual energy consumption is very large. Among them, industrial boilers and asynchronous motors are the main energy-consuming equipment of the company. There are currently about 3,000 boilers 201 in use, and the annual coal consumption is about 3 million tons. Because of the management and old design of the enterprise, the energy waste is more serious.

Take the monitoring data in the first half of 1999 as an example to analyze the operation status of industrial boilers and motors in Baotou.

Boiler and motor energy test analysis In the first half of 1999, there were 42 energy station monitoring companies, 49 boilers were tested, and 14 industrial boilers were tested according to the Inner Mongolia Autonomous Region Local Standard 08153 91 Energy Utilization Monitoring Standard.

Motor testing is based on the national standard 0,249,795 phase asynchronous motor economic operation.

The testing of 49 boilers in use in 42 companies found that boilers generally contribute to low thermal efficiency and low energy waste. The reason is due to the fact that some companies have a longer boiler service life and a lower boiler operator operating level. The analysis of the energy use of the enterprise based on the carbon content of the slag only reflects the energy use of the enterprise.

According to the test results, the boiler with a slag pot carbon standard amounted to 25 percent of the total 51.02. The slag carbon content exceeding the standard boiler was 24, which accounted for 48.98 of the total. There were 15 boilers whose slag carbon content exceeded 30, accounting for 62.50 of the unqualified total. , And these companies basically consume more than 1,000 tons of coal. If calculated by half a year, these 15 boilers are equivalent to Taiwan boilers. The coal consumption is about 8,000 tons in half a year, and the carbon content of the slag is 62.50 with a time of 35. The author describes Wang Weimin, 5. Male. Mongolian branch, Chifeng, Inner Mongolia. If the engineer calculates the carbon content of the slag 2 according to the standard, the amount of wasted fuel will be 300 tons in the first half of this algorithm.

The tests conducted on 141 sets of motors have found that the fan type has a relatively large non-economical operational restriction, and it is difficult to artificially adjust the load of the fan, causing a phenomenon of large horse-drawn carts during the operation of the motor. According to the test data, non-economic monitoring of industrial boilers and motors has emerged, and companies still have great potential for energy conservation. This requires companies to increase investment in energy-saving technological transformation and reduce energy consumption. Energy efficiency and economics; analysis of benefits and environmental benefits The analysis of training materials for energy use in Shandong Province requires that every furnace excess air factor wastes 84 cigarettes of fuel every time it exceeds the standard. 4 The slag carbon content exceeds the effective heat efficiency + reduces the waste of fuel. 4 The 49 boilers tested were equivalent to table-type boilers, and 20,000 tons of coal was consumed for half a year. According to the test results, this boiler was estimated to have excessive air ratio at the exhaust, and 63.26 hours exceeded the standard. 1. The waste fuel was introduced as a row. Smoke temperature 1 has a time of 20.41 over the standard 15, Huangye, fuel for slag carbon content 2 48.98 time over the standard introduced waste of fuel for efficiency Q temporarily do not consider most of the boiler efficiency can not reach the standard 24 Inner Mongolia quality Technical supervision requests, other data are selected the lowest value.

In this way, half the amount of wasted fuel accounts for 8.09 tons of coal with a total coal consumption of 20,000 tons. If the market's raw coal price is 80 yuan per ton, 1618.7 tons of coal will have to pay 129,496 yuan.

According to the environmental statistics manual, the volume of flue gas produced per kilogram of coal burned during boiler operation can be calculated.

The volume of flue gas generated during the combustion of coal, and the measured air coefficient of the theoretical smoke at the time of combustion of coal is low because the ash content of coal is 20.80, which is 280 tons of ash per ton of coal. 15 25 becomes fly ash, and these ash 520 become soot.

If all the 49 boilers are up to standard operation, the emission of 35,368,595 m3 of flue gas to the atmosphere will be reduced, and 2.5216.83 tons of fly ash will be discharged into the air, and 250,330 tons of ash residues will be discharged into the ground.

The excess air coefficient is essentially a value that reflects the ratio of fuel to air. It directly reflects the economics of boiler combustion and the technical level of operation and operation, plus the wear of the fan, and reduces the mechanical life.

The carbon content of slag 2 indicates the complete degree of combustion of coal in the furnace, which reflects the temperature of the furnace, the quality of the coal, the speed of the grate, and the size of the air supply, that is, the combined effect of the sum.

Therefore, during the use of boilers, the company reasonably adjusts the drum draft and coal seam thickness according to different conditions so that the output of the boiler can reach the best state, reducing man-made waste and environmental pollution. The power of non-economically operated motors tested in the first half of 1999 is less than 18.51 For a few hours, a few shots of a postal mail changed Mei Yi is not obvious to more than 3, Shaoguan friends called. The 371 Tuning Machine's frequency conversion commissioning equipment can recover investment in 23 years. However, at present, the company's production is sluggish, and it is impossible to invest tens of thousands of yuan or even more than tens of thousands of yuan in energy-saving technological transformation of the motor. The power plant in our district is basically a thermal power generator and the motor is the main power-consuming equipment. Therefore, increasing the energy-saving technological transformation of the motor used by the enterprise can not only reduce the environmental pollution caused by the construction of the power plant, but also save energy and improve energy efficiency. The purpose of economic benefits.

Several suggestions for strengthening supervision and inspection and strengthening management Through on-site testing, it can be seen that the technical standards that cause boiler and motor operation to exceed standards are mainly due to the low level of operation of the boiler workers and artificial waste.

Boiler selection is irrational, and there are many older stoves.

The boilers can't be operated in a timely manner and cannot be adjusted in time.

There is no no-load power-saving device for the motor.

The implementation of the management system is not effective.

In the current situation where enterprises and institutions have limited financial resources to update their boilers, an effective means to solve this problem is to strengthen management. Therefore, it is recommended that the government's energy authorities should strengthen macro-control and strengthen law enforcement. The energy-saving monitoring central station shall actively cooperate with the competent department of energy to intensify the energy monitoring and supervision of energy use management, and supervise the departments that use the boilers and motors to strengthen the operation and energy-saving management of boilers and motors under the existing equipment operating conditions.

To supervise and inspect the energy use of enterprises and institutions to implement energy-saving thinking, to monitor the results, to enter into management according to law, and to give notice and certain fines for the seriousness of the waste of energy and the rejection of inspections.

Strengthen technical training for boiler operators.

Urge the competent authorities of all units to formulate reasonable scientific measures for the boiler operation to strengthen the supervision and testing of the boilers after renewal and overhaul, so as to reduce the waste caused by unreasonable selection and overhaul.

According to the furnace type selection, coal, and comprehensive economic benefits, 1 and 1 estimates.

We urge enterprises to renovate the national phase-out motors, and carry out energy-saving technological reforms for non-economically operated motors according to specific conditions.

Secondly. The use of advanced new technologies to strengthen the boiler combustion system is mainly the transformation of the furnace arch; the use of stratified combustion technology to improve the thermal efficiency of the boiler, saving coal and reduce emissions of smoke and dust. Frequency conversion technology and no-load power-saving devices are used on the motor to improve the overall efficiency of the motor. The stratified combustion technology and the frequency conversion technology require a relatively large investment. Other methods are those that do not invest or have less investment efficiency. The measures taken to remove the energy from rice are the first to rely on the energy conservation awareness of the entire people, but at present they rely mainly on the implementation of energy conservation policies and regulations. References in the reference. Shandong Right Energy Utilization Monitoring Training Materials Shandong Energy Saving Technology Service + Center. 99 years.

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Inner Mongolia Technical Supervision