Cement dust forthcoming implementation of engineering specifications
By the China Building Materials Group, Hefei Cement Research & Design Institute as the first unit of the preparation of the preparation of the "Cement dust Engineering" Draft for Approval has been reported by the China Environmental Protection Industry Association, pending enactment of the State Environmental Protection Administration.
Overview 1. Task source Domestic and international experience shows that the pollutant control, to ensure that emissions are less than specified limits, to the corresponding industrial pollution control project construction and operation of the process specification. In line with the "cement industrial air pollutant emission standards" (GB4915) the implementation of the State Environmental Protection Administration issued the preparation of "Cement dust Engineering" of the task, by the China Environmental Protection Industry Association, organizing, Hefei Institute as the first compilation unit undertaken the preparation of the task.
2. Prepared on the basis The technical basis for the preparation of technical specifications are: state laws, regulations, standards, industrial policy; the existing production technology and equipment, cement industry situation and development trend; dust removal equipment, technical level and trend of dust collection technology and equipment survey data, etc.; dust emissions from the cement industry, governance effectiveness, economic carrying capacity survey data.
3. Preparation of the principle of
Standard provisions to ensure the scientific and operational implementation process. To achieve the goal of sustainable development of cement industry to the national environmental protection and pollution control laws, regulations, rules, policies and planning as the basis, through the development and implementation of this specification, the promotion of environmental benefits, economic and social benefits of reunification; help protect the environment, ecological environment and human health; conducive to the relevant state laws, regulations and regulatory documents of implementation; and economic and technological development and economic capacity of stakeholders to adapt the content of scientific, reasonable and feasible; to research results and practical experience based on an advanced, promote scientific and technological progress; cement industry situation in our country, according to foreign cement or building materials industry standard technology of environmental protection regulations, environmental engineering learn from other domestic industries to develop technical specifications of the experience; the promotion of clean production, cyclical economy, resource conservation and comprehensive utilization. Reflect the pollution control process.
4. Preparation method Light of the specific circumstances of the main content specification, in norm-setting work, to carry out the relevant investigation, research, data collection, consultation, demonstration, test, test and so on.
Dust emissions and the cement industry to carry out effective investigation of dust, dust removal equipment, technology development and processing capacity of the survey, foreign cement or building materials industry, environmental protection standards, technical regulations and other domestic industry, environmental engineering technical specifications related content investigation.
5. The main work process Data collection and investigation of the above, based on a draft prepared by the preparation of group? Bags Committee of China Environmental Protection Industry Association, within the comments? Preparation of group changes? Draft form? General Office issued a document to the relevant authorities for comments to the National ? the preparation of group repeated research, changes? formation manuscript? Administration experts review and confirmation? preparation group and then carefully revised, after two years, six stage, the formation of the Draft for Approval.
Normative content 1. Content Structure Main content of this technical specification are: scope; regulatory reference documents; terminology and definitions; design; pretreatment; bag filter; electrostatic precipitator; works facilities; no organized discharge requirements; Environmental Protection and health and safety; construction and acceptance; Operation and Maintenance. Another five informative appendices.
2. Main provision in the 2.1 Scope This standard applies to the cement industry construction, reconstruction, expansion of dust removal project from design to acceptance, management and operation of the whole process has been running the project management of construction dust can be used as environmental impact assessment, design, construction, environmental protection, acceptance and completion of after the operation and management of technical basis.
2.2 Design The overall design is highly refined in this specification. The nature of the overall design of the exhaust pipes, dust process, dust removal system, major component parts and the main cement plant emissions, dust removal point and the recommended pattern.
2.2.1 Dust properties and gas content of gas
Precipitator selection depends first and foremost condition for dealing with object parameters, as a consequence the general principles of design in the regulations, the first introduced the "cement production facilities (facilities) the exclusive nature of dust and gas content of gas." Provides for all stages of cement production process, through optimization of the design, equipment selection and optimization of operations and other measures to stabilize the production process, reducing dust gas emissions, reducing its temperature and stabilize emissions, achieving energy saving purpose.
2.2.2 Process Design Dust
Dust determined, what kind of process with the most economic and reasonable, is the key merits of Dust Removal. Specification of the removal process design principles, namely, optimization principles, economic principles, enabling the development of advanced cement production process principles. Also on the main provisions of the cement production process and production equipment, according to dust properties and the principle of energy conservation, process and recommend the appropriate dust filter. In order to ensure that the GB4915 under "dust removal device and their corresponding production process should be synchronized operation of equipment," the provisions of this section, "dust removal system may not set bypass duct."
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