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XD2000 pulse soot blower used in the profile of waste heat boiler

. Drain wire thread; 29. Flame guide arm; 30. Pulse tank; 31. Pulsed nozzle; 32. Electrical control box system diagram in Figure 1 pulse soot (2) the total cancellation of the gas distribution header and a number of blowing cooling electric lines to prevent over-temperature pipelines. Valve, the combustible gas directly into a single box by rotating slip assembly, all (4) procedures designed to delay and ignition delay of gas distribution, gas distribution when the branch has a separate ignition and check valves. When the single branch made ignition acetylene air solenoid valve solenoid valve delay than 0.5 seconds off, you can spin a fault, and the remaining branches can also be normal purge. Turn the traditional pre-set box with combustible gas purge tube road clean, acetylene ignition power program a failure, but the whole blowing systems are unable to vote after the closure of the magnetic valve is 0.2 ~ 0.4 seconds after the ignition ,[link widoczny dla zalogowanych], then guided into the use of the pipeline fire. The check valve is closed in place, avoiding the recoil of the rotating set of deflagration (3) connected to each header in the rotation first by compressed air tank and slip distribution of gas solenoid valve. L0 seconds of the slip road to the purge, the gas will blow branch (5) As with a PLC programmable controller and smart display after the final clean sweep into the gas distribution process. Deflagration once each way, then end, the operation is relatively simple,[link widoczny dla zalogowanych], by the operation, maintenance staff directly on the touch screen of the slip road from the compressed air for 5 seconds automatically purge. The purge pulse on the number of times each branch, with air time, purge time, gas distribution process has the following extension of the role of, first, to avoid the fire tube and the pulse derivative C02 tank, the ignition delay and other parameters were modified to adjust to the best form of aggregation, the pulse of the next step, the other is the role of the pipeline into the state. Gas Turbine Technology Volume 16 70 3 failures in use and improvement measures put into operation in early soot blower, the occurrence of the following phenomena: (1) As part of the guide turned off the fire line check valve loose, when the recoil air deflagration line solenoid valve to open the top (inlet solenoid valve to make progress under a), resulting in the solenoid valve and air compressor pump under attack and damage. (2) adjusting the gas mixture with the slip process in the slip before the superheater, where flue gas temperature is higher because, not ignition, combustion and explosion mixture. (3) oxygen purge evaporator fouling the tail is not complete. In response to these failures, we and the manufacturers of the equipment problems,[link widoczny dla zalogowanych], and developed the following improvements. (1) solenoid valve in the air after the mixing tank air pipes on the road in front of a check valve installed, isolate the deflagration when the recoil of the solenoid valves and pumps of air compression. No further improvement of more than a year due to causes deflagration recoil of the solenoid valve and air compressor damage. (2) gas mixture with flue gas temperature to adjust to lower fuel slip. (3) more for the boiler fouling the tail on the tail of the pulse tank was replaced, and expanded volume of the tank where pulse, and adjust the pulse where the tank into the air time. Increased the equivalent of the Department of deflagration. Transformation by using the shutdown after a period of time to check on the heating surface,[link widoczny dla zalogowanych], heating surface fouling the tail can be more thoroughly removed. 4 improved health through the sootblowers improvements and adjustments,[link widoczny dla zalogowanych], the soot blower operation has been relatively stable in the following aspects. (1) the effect of soot blowing soot blower is to determine the effect achieved by soot blowers of the most important factor. I plant shutdown time by a few times all of the boiler heating surface was examined, the heating surface than by a thorough cleaning. Run-time with just the tail of the exhaust gas temperature than when put into operation does not appear to rise. Operation of turbine power when compared with the first drop did not occur, are 13.2MW. Work shows that the effect of soot blower ideal. Table 1 shows the first run and put into operation some time with the blowing of the heating surface before the end of the slip road. To adjust the mixture with gas will not burst on the thermodynamic parameters of the comparison: Table 1 soot before and after the thermal condition parameters (2) blowing the success rate of deflagration deflagration soot blower is to determine the success rate of job stability sootblowers an important factor. We improved the deflagration soot blower a statistical success rate, success rate was 100% (see Table 2). Table 2, the success rate of deflagration soot blower Statistics (3) system failure rate through the transformation, the system operation has been relatively stable, without any major defects. Daily work is to regularly clean up the main rotation set box (clean up once a month.) Knock individual slip occurs when the spark plug does not look clean or replace the carbon. So far, the failure rate is low. 5 Conclusion I plant waste heat boiler installation type of the set of acetylene deflagration soot blower, the better to improve the tubes of the boiler heating surface fouling conditions, can maintain a stable power boiler and steam turbine exhaust gas temperature, and the sets of equipment and technology more advanced, simple, low maintenance, work is also more stable. Improved boiler efficiency, increase economic efficiency. lT 『■-__-■ _
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