Papers by Keyword: Waste Gas

Abstract: Ceramic kiln in the use of the process of high energy consumption, high resource consumption, serious environmental pollution and other problems are the current ceramic industry development of serious problems.Kiln combustion exhaust gas pollution types mainly include: SO₂, NO_x, CO, particulate matter, lead, cadmium, nickel and its compounds, fluoride and chloride and so on, and the traditional kiln direct emissions into the atmosphere, causing serious pollution to the environment, the need to have reliable purification treatment devices to meet emissions requirements, but the original purification plant purification effect is poor, process complex aspects of problems.This paper introduces a new porous ceramic purification device to improve the electric kiln exhaust gas purification to improve the catalytic conversion of CO, NO_X, SO₂ desulfurization and particulate matter purification.

Abstract: To study the environmental impact of a project of 8 inches integrated circuit chip (8IICCP), investigation and analysis on engineering features, process flow, pollution and treatment of waste water, waste gases, and waste solids were done in this paper. The results showed that it would produce industrial 4110 m3/d of wastewater in the production in which 2920 m3/d of process waste water needed to be treated. After being treated, F-, NH3-N, Phosphate, COD(Chemical Oxygen Demand), TOC(Total Organic Carbon) and SS(Suspended Solid) concentrations in effluent of industrial wastewater would be 1.85 mg/L, 1.85 mg/L, 0.32 mg/L, 119.7 mg/L, 58.7 mg/L and 34.2 mg/L respectively. It also would produce many kinds of waste gases in which 4 kinds of them needed to be treated by local scrubber systems respectively. After being treated, the emissions can satisfy the demand. All predicted results can meet the requirements of relevant state standards. Moreover discharging volume of waste liquids and solids and their treating plan had been presented. This project is feasible on aspects of water, air and waste solid environmental influence.

Abstract: It is analyzed in the paper that the production and composition of waste gas, such blowing gas, associated in the chemical production of the chemical enterprise in Shandong. The calorific value of the waste gas is calculated. Thermoelectricity cogeneration is realizable with using the waste gas as fuel. The scale remaining heat generate electricity is determined. The types of main equipment are discussed. The technical process of cogeneration using chemical waste gas is analyzed. economic benefit is studied in detail.

Abstract: This study aimed to synthesize polystyrene (PS)-TiO2 nano-composite from the waste solid absorbent directly, so that the waste TiO2/PS solid absorbent could be used as nano-materials. TiO2 powder with a particle size of 12 nm was used for the solid absorbent. The TiO2 packed scrubbing tube was used for treating synthetic waste gas that contained styrene monomer. Experimental results confirmed that the concentrations of styrene in synthetic waste gas can be reduced by 62% after the activation of photocatalyst, and the lifetime of activated TiO2 catalyst is over 2 hours. From the NMR and DSC spectra of obtained products, PS is actually grafted on the surface of TiO2. The glass transition temperature of obtained PS in TiO2/PS solid absorbent is 100oC.

Abstract: For boron containing glasses, you have to consider a gaseous fraction in the exhaust gas besides the particulate boron compounds. Within the framework of a research project finished in the year 2005 investigations into the emission of particulate and gaseous boron compounds were carried out on 18 glass melting furnaces with boron containing batch. The plants are different with regard to the molten glasses, furnace type, type of firing as well as downstream emission control technologies. The precipitation of particulate boron compounds is unproblematic. The precipitation of gaseous boron compounds is clearly more difficult and further measures have to be taken in respect of the effective precipitation. In a current follow up project, especially the reduction potential of gaseous boron compounds is investigated through the installation of a high temperature sorption stage (injection of fine-ground glass raw materials into the exhaust gas flow behind the superstructure at exhaust gas temperatures of 1400 °C) and/or the injection of alkaline solutions into the waste gas at lower temperatures. Investigations in the exhaust gas of E-glass melters were carried out successfully. Reduction rates of more than 95 % could be proved for gaseous boron compounds. The activities are supported by thermo-chemical calculations in the run up and during the measurements.