Analysis of Energy-saving Application of Optimized Configuration of Compressed Air System Unit
Analysis of energy-saving application of Guangdong Chemical Compressed Air System Unit Optimized Configuration Qin Lunbin (Kunming Acetate Fiber Co., Ltd., Kunming, Yunnan 650224, China) Optimized configuration analysis of compressed air system process, applying Lean Six Sigma management tools to analyze, control, and avoid waste of process configuration. At the same time, it pays attention to the improvement of the process and identifies the future process configuration optimization measures, avoiding the system electrical transformation and system energy-saving optimization scheme and curing the energy-saving achievements. Compressed air system; optimized configuration and energy saving; application analysis of the company's existing compressed air unit 4 sets (the first phase of two sets of l/2 units was put into operation in 1995; the second phase of two sets of 3/4 units was put into operation in 2006), of which The first phase is equipped with two sets of LW-38/10 oil-free lubricating air compressor units, and the second phase is equipped with two sets of GA250W-8.5 air compressor units. Statistical analysis of historical production and operation data shows that the energy consumption of the first-stage unit is high and the maintenance cost is high (the daily maintenance and spare parts reserve cost of the first-phase unit is about 300,000 RMB). At the same time, statistical analysis from the commissioning rate data of the unit in the past three years shows that the first-stage unit is in the idle maintenance state for a long time. In 2010, the electrical special safety inspection of the board of directors of the company required special rectification actions for the electrical high-voltage to low-voltage of the first-stage unit of the compressed air system. The required rectification costs were 1.6 million yuan. To this end, the company needs to optimize the analysis and analysis process of the company's compressed air system process demand requirements, apply Lean Six Sigma management tools to analyze the compressed air system process production process, eliminate process waste and optimize process configuration. 1 Compressed air system process analysis 1.1 Compressed air system process status The daily operation state of the company's compressed air unit is 3 or 4 units, and the 3 or 4 units in parallel operation can meet the normal production gas supply requirements. . Units 1 and 2 are used when the unit is in standby or 3 or 4 units are faulty. The air pressure is a 2 air pressure 1 compressed air system process. 2 Analysis of the current operation rate of the unit operation (1) In the past 36 months, the cumulative investment time of the second stage air compressor unit (3\4) accounted for 98%, while the first stage air compressor unit single machine (1\2) The cumulative start-up test time only accounts for 1 (2) - the long-term standby of the air compressor unit will cause idle maintenance waste, while the second-stage unit can maintain normal production needs at full capacity. (3) Discontinuation and overhaul to resume production. During the recovery period or the recovery of the broken belt, the second-stage unit needs to be operated at the same time for a short period of time. The parallel operation time of the 3/4 unit is only 1%. 1.3 Analysis of the daily average load of the compressed air unit The maximum load is 36.794M3 /min, flash stop to restore the maximum load of 36.2M3 / min); enough for normal process production needs. Jia! Toilet painting unit operation and commissioning rate pie chart compressed air unit single value map and descriptive statistics Qin Lunbin (1965-), male, Kunming, engineer, the main research direction is thermal power application engineering. Guangdong Chemical has reached the design requirements. (7) The large particle plugging material in the drilling fluid must be screened out. It may be considered to retain a part of the small particle plugging material to prevent leakage caused by tiny cracks. In order to improve the salt resistance of the drilling fluid, the ratio of the salt-resistant sulfonated material is 100%, and the proportion of the salt-resistant sulfonated material is 1% of the drilling fluid. Add 80t of industrial salt according to the ratio of 16%, adjust the chloride ion content of the drilling fluid to 85000ppm. Increase the density of the drilling fluid to 1.65g/cm3. (8) The salt layer should be replenished in time. The freshwater drilling fluid makes the Cr content of the drilling fluid always under-saturated, that is, 80000ppmC1-120000ppm, so that the well wall 8 of the rock salt layer is moderately dissolved, and the diameter of the rock salt layer is appropriately expanded to prevent the rock salt layer from being stuck. Timely replenish the caustic soda water and maintain the pH of the drilling fluid to 910. (9) During the three-open period, in order to prevent the salt layer from creeping and reducing the diameter in the empty well state, the salt layer can be closed with fresh water drilling fluid. 3.2 Salt layer well body quality salt layer electrical measurement * work smoothly. After two electrical measurements, the measured creep rate of the 5,527m salt layer at 5326m is 1.98mm/h. T- is the planned casing operation time, calculated according to 50.5h (16h drilling, 2h preparation, next) Casing 24h, safety factor 1.2); Gd- is the maximum creep rate, the maximum creeping speed of the well salt layer at 5326m is D- is the diameter of the paste salt layer when drilling, calculated according to 385.31mm; calculate the safety time Dc=385.31 - (1.98x50.5) = 285.32mm. The outer diameter of the TP155V thick-walled casing is 265.13mm. It can be seen from the formula that the well can meet the requirements of the casing. 4.1 Characteristics of the stratum and its requirements for drilling fluids The wells are drilled in the lower mudstone section of the Carboniferous, the sand-shale interbedded section and the Silurian and Ordovician upper strata. The drilling fluid should be well protected against collapse and leakage. . The higher the bottom hole temperature and the higher salt content of the mud, to ensure that the drilling fluid has good temperature resistance. 4.2 Drilling fluid construction technical points (1) Because the wellbore of the three-opening section is large and the open hole section is long, the cement slurry is severely grooved during cementing, causing serious pollution to the drilling fluid. The viscosity drops rapidly during the sweep, and the new soil slurry and tackifier are added in time to adjust the performance. At the same time, the density of the drilling fluid was adjusted to 1.30g/cm3 in combination with the polysulfide glue. (2) During the drilling process, closely observe the debris return on the vibrating screen, including the lithology, the shape of the cuttings, the size of the cuttings, the amount of cuttings, and the engineering design based on the monitoring results of the formation pressure. The drilling fluid density should be adjusted in time to ensure that the drilling fluid column pressure can balance the formation pressure and collapse pressure, optimize the performance of the drilling fluid, improve the carrying capacity and suspension capacity of the drilling fluid, and ensure the wellbore stability and normal drilling. 5.1 Characteristics of the stratum and its requirements for drilling fluids (1) The dissolved pores and fractures of the Ordovician carbonate reservoirs are relatively developed, and venting, lost circulation, wellbore and blowout often occur. The performance of drilling fluid should be strengthened and abnormalities should be found. Take timely measures to control the density and prevent the pressure from leaking. Focus on well control safety and protect oil and gas layers at the same time. (2) The reservoirs in this area generally contain H2S. When drilling the sulfur-bearing formation, pay attention to adjusting the density of the drilling fluid to prevent H2S pollution. 5.2 Drilling fluid construction technical points (1) Strengthen the observation of sitting, combined with the performance of drilling fluid, implement the work of leakproof, anti-spray and anti-H2S. (2) Monitor the performance of the drilling fluid, master the changes in performance, and adjust it in time to ensure the safety of the well. (3) After each core is drilled, the bottom of the well is cleaned with thick slurry, and the cycle is completed for one week. After the aftereffect is removed, the core drilling is started. During the core drilling process, try not to replenish the glue, adjust the performance of the drilling fluid, and maintain stable performance. (4) One room is the main target layer. The drilling fluid should be flexibly adjusted according to the downhole conditions. The well control safety is the priority. At the same time, the oil and gas layer protection work is done. It is strictly forbidden to use the fluorescent treatment agent.
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