I. The status of energy use in industrial enterprises, the performance of waste, and solutions
Our country has established an independent and relatively complete industrial system. The output of many major industrial products has already ranked among the top in the world, even the world. The total amount of energy consumed by industrial enterprises in China is already one of the largest in the world, and huge energy consumption is generated each year. This has increased GDP and achieved economic growth, but on the other hand, high energy consumption has also emerged. As a result of the negative impact, corporate costs have also risen. Especially under the backdrop of advocating energy conservation and environmental protection throughout the world, it is more necessary to further solve the problem of energy consumption, rational consumption, and save consumption. The current common problems that industrial enterprises tend to use in energy use are:
(I) Part of the production process is relatively old
China is a developing country. In the development of various industrial categories, there is basically a gradual development, and a process of phase-out is in a complex situation where both large and small coexistence of old and new technologies coexist. Many pillar industries, such as iron and steel, petroleum, coal, power generation, chemicals, building materials, machinery, non-ferrous metals, textiles, glass, chlor-alkali, plastics, etc., have some backward production capacity. Some of them are newly built, but due to technical transfer The lagging nature, as well as the limited amount of investment, there are some gaps between the efficiency of its production equipment and production processes and advanced developed countries. Even in some emerging industries, such as silicon wafers, rare earths, wind power, electronics, etc., there are also some public utilities (such as air compressors, boilers, air conditioners, lighting, elevators, power distribution facilities, etc.) that consume high energy. Inefficient phenomenon.
Eliminating outdated production capacity and promoting the industry's large-scale, high-efficiency, and intensification are inevitable trends. However, things are often not so simple, because the elimination of a part of production capacity will involve financial and employment issues. Simple elimination is also a waste of fixed assets. What is more important is that the current widespread problem of energy waste is a structural problem. It exists in almost all industrial enterprises, and some exist only in certain parts and certain links. At the same time, the problem of energy waste is also a hierarchical problem. Simple waste can be improved by simple means. Waste that involves basic processes requires more energy to be able to manage.
High energy consumption will be a detrimental factor for any industrial enterprise. In particular, as the industry slows down, and energy prices are increasing, it is urgent to adopt new equipment and means to achieve high energy consumption in the production process. Links to governance.
Our solution: For any industrial enterprise, we study its energy consumption by industry and sub-process, and refer to the energy efficiency standards of the most efficient companies. Combined with the company's situation, we have targeted and highly operable The energy-saving program. In the case that the production process cannot be modified in large quantities, hierarchical progressive energy-saving suggestions can be adopted to take into account the immediate and long-term energy-saving needs.
(b) The equipment situation does not match the actual production situation
The equipment configuration of an industrial enterprise is generally designed in accordance with the maximum capacity and a certain amount of allowances. In use, the following situations may not match the actual production situation:
When the actual production volume is reduced or the margin design is too large, there will be a phenomenon that the margin is too large, and the “big horse-drawn car†problem arises in steam, circulating water, air supply, and air compressors. There is a greater chance of appearance.
When there are cyclical factors (periods, seasonality, etc.), there will be uneconomical operation of some supply links. For example, in the fall and winter season, the demand for the circulation quantity of the cooling system will be reduced, and if it is still operated in accordance with the summer conditions, it will be uneconomical. phenomenon.
When a low-taste energy flow occurs in the production process, due to the limitation of the process conditions, it cannot be used and is directly discarded, resulting in waste. For example, the residual heat of flue gas, low-temperature hot water, etc. have different tastes, and the use is slightly more difficult, and existing equipment cannot handle it, and thus it is abandoned.
Our solution: adopting the most advanced and stable energy-saving equipment for energy-saving transformation of enterprise equipment, enabling the production equipment to have dynamic adjustment capabilities, which can reduce unreasonable false demand while ensuring the safety margin. Energy saving. At the same time, the use of advanced low-taste energy utilization equipment, full use of waste heat, waste water, waste slag and other resources, so that a large number of renewable energy sources.
(3) Extensive energy management methods
With the improvement of energy-saving awareness of enterprises, energy conservation has been put on the agenda of most enterprises and more or less has been done. The current situation is that the energy-saving awareness of enterprises is gradually increasing, and energy, technology, manpower, and raw materials are all on the same line. It has become one of the most important resources. However, the current energy-saving situation of industrial enterprises is very different. The level of energy management is very different. The current energy management problems that many companies have emerged are:
Lack of specialized management systems and management tools, uneven levels of energy management personnel, and limited vision of the industry.
The supervision of energy use is not detailed, no reasonable method can be found, no energy saving point can be found or found, and there is no detailed evaluation method.
Although serious leakages occurred, there was a lack of overall surveying and energy saving. Some areas did not even have dedicated personnel to conduct detailed management of energy-using equipment, and they lacked a target responsibility system for energy conservation.
Such as these are the real problems faced by the current energy management of industrial enterprises. We, as energy service providers, should go to enterprises to help them establish scientific management methods and management methods and carry out energy conservation training. For the right conditions, energy conservation should be achieved. The plan to implement energy-saving reforms will help companies to make up for the inadequacies of relying on their own management and allow them to enjoy favorable conditions for energy conservation and consumption reduction.
Our solution: In-depth company research to help companies raise awareness of energy conservation, put forward a reasonable energy management program, establish a corporate energy management platform, establish a high-efficiency production and operation system, set up reasonable detection facilities, and train the energy-saving responsible personnel for the company. Establish a long-term mechanism for energy conservation and emission reduction with companies.
Second, the integrated energy-saving operation process of industrial enterprises
III. Return on investment in comprehensive energy-saving of industrial enterprises
In the process of comprehensive energy-saving projects for industrial enterprises, the main inputs are: equipment investment, construction costs, financing costs, and operating costs; the main outputs are: energy cost savings, sales of newly generated energy, and state subsidies. The economic indicators of the project must be to reliably recover the costs and form a reasonable share of profits, resulting in a win-win situation. Its financing can be funded by the demand side itself, energy conservation service companies, or third-party financing.
According to the project's input/output analysis, estimates of the amount of investment and the amount of output are obtained, and project risks are assessed. As an energy-saving service company, we must use professional knowledge to calculate the return on investment and avoid risks. The implementation of the project needs to recover costs and gain benefits as soon as possible. [The era of science instrument original in 2011.12 reproduced please indicate the source]