Calcium carbide consumption
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This post was last edited by sunjl1981 on 2013-1-6 at 23:12. According to the newly announced entry requirements for the chlor-alkali industry by the National Development and Reform Commission, the consumption of calcium carbide is required to be 1.42 tons per PVC unit (with a gas generation capacity of 300). Of course, this figure varies depending on the geographical location and management level of each company. How much can each friend’s company achieve? Is there any value that reaches this level or is even better? Are there any good experiences? # ， ， &
Our company’s current calcium carbide consumption is 1.47 tons per PVC (with a gas generation rate of 300)
Putting everything else aside, with calcium carbide in such short supply these days, how many companies can produce more than 300 units per batch? :o 270 or above is good.
Our company’s current calcium carbide consumption is 1479 kg per ton of PVC (with a gas generation rate of 300)
Our company’s value is 1.43–1.44, but the gas generation volume is less than 300; if the calcium carbide is of good quality, it should be possible to reach 1.42
Our company’s calcium carbide consumption is 1.58 tons per PVC unit (with a gas generation rate of 270). This ratio just won’t go down, and it’s driving us crazy. Last edited by limingshuguang on 2007-12-13 08:50
Our company’s calcium carbide consumption is 1.48–1.50, with an average gas generation volume of 285 per unit of calcium carbide
Our company’s value is 1.42, but the required gas generation capacity for calcium carbide to be considered qualified is 290–300
We use 1.5, with a gas output of 285
:):time: The measurement of calcium carbide must be accurate; the weight of ferrosilicon powder needs to be excluded. Cost calculations should be based on standard calcium carbide (270 should be considered as 300 in such calculations). Other factors include leaks, venting of distillation off-gases, disposal of finished products in sewers, and the material removed from the reactor vessels not being taken into account.
May I ask what is used to measure the amount of calcium carbide fed in on the upper floor?
As long as production is normal, the impact on consumption after calcium carbide enters the generator is minimal, and the consumption figures for different processes vary little. What is important is the measurement of calcium carbide, testing upon arrival at the plant, transportation, crushing, storage, etc.; this is related to the management level of various plants, backroom deals, bribes, **. . . . **It’s connected now.:lol :lol :lol :@ :@ This post was last edited by limingshuguang on 2008-1-9 09:14.]
Our company’s cumulative level this year is 1.480, which is already the best figure on record. We use the wet method to produce acetylene at the moment; what about you? The gas generation rate of calcium carbide is around 280 on average. We are currently using a stripping unit for recovery, but exhaust gas adsorption has not yet been implemented. The closed feeding system for polymerization is under renovation; it’s unclear what the results of these changes will be
Although our factory does not use a gas generation capacity of 300, we still calculate everything based on that value; this allows us to achieve a value of around 1.42. The key is to control leaks and improve management practices. Of course, it is also important to choose a laboratory technician with experience… It’s easy to tell the quality of each batch of calcium carbide, and when taking samples we focus on raw materials, then convert the values to reflect a gas generation capacity of 300. As a result, the unit consumption decreases.
The old area of our factory should be able to reach 1.42, but in the new area, the energy consumption per unit alone is already over 1.5; it’s frustrating
:):time: Measurement is carried out using electronic belt scales. Of course, the 12th and 14th floors are of great importance; those matters are mainly under the responsibility of the supervisor, but technicians should also pay attention to them. It’s crucial to regularly check whether there is sand, broken bricks, etc. in the slurry being discharged, as well as whether there is lime on the surface of the calcium carbide
Our company’s current calcium carbide consumption is 1,480; it does not reach 1,420. I believe the main factors contributing to this high consumption are as follows. If experts have any additional insights, please share them! ! 1. The exhaust gas emission is high, containing 3% acetylene and about 8% VC ； 2. Wet acetylene also experiences significant entrainment losses ； 3. From the time calcium carbide is in stock until it is used, some of it is lost during this period ； 4. The generator generates a large amount of exhaust gas during maintenance, resulting in some loss ； 5. The exhaust during calcium carbide feeding is frequent (manual feeding), resulting in high losses ； 6. VC entrained in high-boiling substances, along with associated losses; currently we don’t have three towers, so VCM dissolved in the high-boiling substances cannot be processed ； 7. Some VCM is dissolved in the used oil tank ； 8. Equipment maintenance exhaust (the low-boiling tower is maintained almost monthly; currently one unit is in use while the other is on standby) ； 9. The polymerized material closed-feed system is under renovation; it was previously fed manually ； 10. Leaks are also inevitable. This post was last edited by limingshuguang on 2008-1-14 14:06.]
Brothers, is the specific calculation method for calcium carbide quotas the same?
Our company’s value is around 1.5; at its best it reached 1.47, with a gas output of over 290
The standard consumption of calcium carbide in my company is 1430 kg (equivalent to 300 L/kg). There are many factors that influence the consumption of calcium carbide; I believe that in addition to what was mentioned on floor 17, the number of start-up and shutdown cycles is also one of the main influencing factors.