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The ultimate cost reduction! The "combination of cost reduction" of oxygen General plant, and the new vitality of enterprise development!

In the current competitive market environment, reducing cost and increasing efficiency is undoubtedly the key tool for enterprises to highlight the siege and achieve sustainable development. In the wave of cost reduction and efficiency increase of Hebei Xinda Group, all units actively explore and innovate, and take practical actions to dig deep potential and improve efficiency. As a member of the group, Hebei Rongxin Steel Co., Ltd. has achieved remarkable results in a series of cost reduction measures, which has injected surging momentum into the high-quality development of the group.

Overcome the problem of molecular sieve compaction

Reduce start-up costs

Recently, the oxygen plant (Hebei Rongxin) found that when the oxygen generator started the car, the manual compression time of molecular sieve was too long, restricting the production efficiency and increasing the cost. To this end, the oxygen Plant (Hebei Rongxin) has set up a QC research team with the goal of reducing consumption, and is committed to shortening the manual compression time of molecular sieve.

Members of the research team collected multiple sets of detailed data through a comprehensive and in-depth investigation of the current situation. The data clearly shows that the molecular sieve compaction time is positively correlated with the product time of the oxygen production unit, the longer the compaction time, the longer the start time of the unit, the time of producing oxygen and nitrogen is delayed correspondingly, and the power consumption of the unit is increased significantly. Based on this, the team set the challenging goal of significantly reducing the manual loading time of molecular sieve from the original 20-30 minutes to less than 15 minutes.

In order to accurately find out the key factors affecting the filling time, the team members carried out detailed analysis from multiple dimensions such as man, machine, material, method, ring, and measurement, and carded out eight end factors such as the small diameter of the filling pipe, the level of personnel operation, and the defects of measurement tools. Subsequently, they checked and verified these factors one by one through a variety of rigorous confirmation methods such as consulting computer data records, on-site confirmation, and practical tests. Finally, it was determined that the factors such as unchanged pressurization method and long pressurization time were the key factors leading to too long pressurization time.

In response to these factors, the team has carefully formulated practical countermeasures. They innovatively put forward a plan to boost the pressure synchronously with the air compressor, and realized the goal of boosting the pressure within 10 minutes by precisely controlling the opening of the valve and cleverly adjusting the release valve and anti-surge valve. At the same time, the operation method of opening a specific valve effectively shortens the pressure boost time of the air compressor.

The results were immediate. After tackling the key, the compression time of the molecular sieve was reduced from 30 minutes to 5 minutes, which greatly shortened the starting time of the oxygen generating unit. After calculation, each start of the car can not only advance the oxygen 0.4 hours, increase the oxygen production, each start of the car is expected to save 11,500 yuan, cost reduction and efficiency results are significant.

Prolong the use cycle of the adsorbent

Improve economic efficiency

In the oxygen production process, molecular sieve is the key device for purifying air, and its adsorbent service cycle is directly related to the stability and cost of equipment operation. The QC research team of the Oxygen General Plant (Hebei Rongxin) focused on this, with the goal of extending the service cycle of the adsorber.

QC research team through the status of the investigation, clear the use of the two molecular sieves cycle. Then, after comprehensive analysis, we found out many potential factors such as poor heat transfer effect of the filler, less adsorbent, uneven bed, inaccurate measurement data. After a rigorous identification process, it was finally determined that less adsorbent and uneven bedding were the key influencing factors. The team took measures to fill the adsorbent, pave the bed, and set the goal of cold blowing peak above 135 ° C and carbon dioxide control within 1ppm. In the implementation process, the operation standard is strictly controlled, and the adsorbent is filled above the partition position and paved. After the implementation of the measures, the use time of the molecular sieve reached 6 hours, the carbon dioxide content of the air molecular sieve was normal and the operation was stable, which effectively improved the economic benefits.

The fire is high, the cost is reduced and the innovation tide is increased. Reducing cost and increasing efficiency is the key key for Xinda to break through the development bottleneck and achieve transformation and upgrading. Whether in the production line, carefully control equipment parameters to reduce energy consumption; Still in the management position, optimize the process system, improve the operation efficiency; Or in the technology research and development department, innovative process methods, reduce production costs, each position is the forefront of cost reduction and efficiency. Let us continue to push forward the work of cost reduction and efficiency improvement with the tenacity of "insist on mountain peak", transform the blueprint of cost reduction and efficiency improvement of the Group into real development results, so that Xinda is steady as a rock in the wave of industry change, bravely climb the peak, and forge ahead towards the goal of higher quality and more sustainable development!

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