Raw material for an air separation plant air compressor is the key to the distillation column gas
Equipment, once the parking, air separation plant will fully stop. Fushun B
Ene Chemical Company air separation plant materials often have air compressor K601 Instrument
Electrical control panel inside the pieces of failure stop, resulting in nitrogen, oxygen, fluctuations in external supply
Or interruption, not only affects the normal operation of an air separation plant, but also affect
Ring throughout the plant's normal production and the completion of the production targets. In order to understand
Summary of this problem, use of too many measures, but the results are not satisfactory.
To this end I conducted a further analysis of the problem and research to find
To the appropriate address measures to ensure the long-period operation of air separation plant.
An electrical control panel instrument air compressor and the air temperature too high
The impact of sub-equipment operation
Reconstruction of an air separation plant in 1997 when the compressor K601 for raw materials
The control system has been updated, but every summer, owing to the air compressor
K601 electric field instrument control panel (hereinafter referred to as: K601 control
Plate) Temperature High, components aging, trigger interlock malfunction, cited
Fat K601 park interlock, resulting in an air separation plant full stop. Though
There is liquid nitrogen reserve to ensure a continuous nitrogen confess, but the storage of a
Limit. The oxygen supply disruption, so that ethylene oxide / ethylene glycol plant was
Forced to stop, causing a certain degree of economic losses.
K601 control panel located on the northeast corner of the plant, ventilation, heat dissipation
Less effective; and K601 two export pipelines and muffler through
K601 control panel above the control panel from the top of the K601 is only 2m,
Temperature of about 150 ℃, no insulation measures to disseminate more calories; while
Moreover, the control panel itself is more exothermic component. In view of the above three aspects of the original
Because of the control disk hot plate. In order to solve the control of air compressor K601
Disk problem of relatively high temperatures, first of all, the K601 two export pipelines
And the muffler for thermal insulation to reduce heat dissipation; second, summer
Season both sides of the compressor plant north and south windows (east and west sides without windows
Households) completely opened up, to enhance the air convection, reducing the temperature inside the plant,
But the results are not satisfactory, and the summer rain, heavy rainfall, it
Must promptly control panel near the windows are kept closed, otherwise, rain Gone with the Wind
Into the control panel, the K601 can also cause parking. Later, the control panel
The door open, in the control panel before the addition of a Roots blower units to speed up disk
The air flow to remove electrical instrument components, the thermal distribution at work
Volume. But still unable to control panel the temperature down too much, each
Summer, owing to the high temperature inside the control panel, resulting in instrument malfunction, building
Into K601 parking, which affects normal production plant. Also plans
Electric air compressor K601 field instrument control panel to set an air-conditioned room
Inter to solve this problem, but because space is too small, the construction and processing
Inconvenient to give up work issues.
2 modification measures
In 2002, conducted a small technical innovation, that is, managed to 500kPa
Instrument air cooled to about 5 ℃ ~ 8 ℃ later, into the control panel, the
To reduce the temperature of the control panel. So a small increase in a heat exchanger units, with
From the freezer Z601 out of 3 ℃ ~ 5 ℃ of chilled water cooling devices
Wind, be cooled to 10 ℃ below, pass into the air compressor K601 control panel
Inside; control panel inside the part of the pipeline is also wrapped in insulation layer is aimed at
Wind instrument to prevent the exposed pipeline condensation. In the control panel inside with a
Root two sealed, and the wall to open a lot of holes in all directions white steel
Pipe wind instrument, wherein the low-temperature 4, away heat to lower the control panel
The temperature, flow shown in Figure 1. When put into use, with manual valve adjustment
Meter wind flow, the first instrument for the wind, a few hours later for the chilled water,
Manually adjustable valve to control the chilled water flow meter air temperature.
Figure 1 Air Compressor K601 on-site control panel cooling transformation flow
Put into use, the effect is very good, K601 continuous operation of the 900d,
No longer a result of instrument air compressor K601 electric control panel fault
Parking.
3 results
Through a small technical improvements to address the long-term space constraints
Press K601 continuous operation of the problems, and achieved good results.
Technological transformation ago, the annual air compressor K601 stop at least four more times, each
Second stop, the devices to find the reasons for electrical maintenance personnel to deal with the problem
Varies from 4h, as many as 10h, total annual air separation equipment, it is a result of K601
Barrier for a suspension of up to 50h or more oxygen and less production of ethylene oxide, more than 400 t.
The technological transformation of white steel pipe wind instrument, carbon steel, chilled water pipes and small-for -
Heat Total investments were less than 5,000 yuan, and the annual record-effective up to 100
Million yuan.