MANUFACTURE OF CHEMICALS AND CHEMICAL PRODUCTS # 6 Background Beijing Organic Chemical (BOC) Plant covers an area of 43 hectares and has 2605 employees. The fixed assets are 166 million US$. BOC produces polyvinyl alcohol (PVA), polyvinyl acetate emulsion and a ethylene vinyl acetate (EVA) copolymer series with a capacity of 100,000 tons annually. So they have become the largest manufacturer of polyvinyl acetate emulsion, EVA emulsion and EVA resin. Beijing Organic Chemical Plant participated in the Sino-Norwegian cleaner production program in China for economic benefit and to protect the environment. They need a sound use of resources and energy and a reduction in the consumption of energy and raw materials. Cleaner Production Principle Housekeeping; Process modification; Material substitution Cleaner Production Application The installation adopted a continuous and low sodium hydroxide belt alcoholysis process. At a fixed temperature with the catalysis of sodium hydroxide and methyl alcohol, PVA is produced. There are four unit operations in the installation, including an alcoholysis reaction unit, a dry vacuum unit, a product package unit and a waste liquid recovering unit. Waste stream information:
Cleaner Production Options After screening the 28 options initially generated from employees for waste minimization, a total of 25 cleaner production options were identified. Eleven options (Class A) needed little or no investment. Fourteen options (Class B) may result in a good economic return, but need high investment. After analyzing the B options, a feasibility analysis was done on five options (Class B) and will be shortly implemented. The remaining Class B options are listed in a long term plan. Housekeeping
Technology changes
Stage of Development Eleven of the housekeeping options have been implemented since the beginning of the CP project in 1995. It is planned to implement the remaining options. Environmental and Economic Benefits After implementation of the cleaner production project, COD discharge will be reduced 50% in the near future. After implementing option 3, The recovered product will be 12 tons/year a value of about 0.25 million RMB. Changing the evaporation process into the mechanical separation in the process of waste water treatment and replacing the filter.
Total annual savings 854,000 Net savings 666,700
Renewing the condenser of methyl alcohol, and the plate of the column and replacing the vacuum pump.
Raising the pressure and the quantity of the cooling water. Capital investment (RMB)
Cleaner Production Benefits After implementation of cleaner production audit project, the workshop had a profit 0.98 million RMB per year. If the workshop implements options 25 and 19 and invests 2.9 million RMB on cleaner production projects, the COD effluent will be reduced 80.0 kg/day and waste water discharge will be reduced 4.08 tons/day. If the workshop implements options 16 and 17, and invests 0.9 million RMB on cleaner production projects, the emission of methyl alcohol from tail gas and the leakage of methyl alcohol from the vacuum pump will be reduced 76.3 tons/year. Constraints None reported. Contacts Industry/Program Contact and Address
Review Status This case study was submitted to UNEP IE by the Sino-Norwegian Cleaner Production Program. It was edited and formatted for the ICPIC diskette in May 1997. Subsequently the case study has undergone a technical review by Dr Prasad Modak at Environmental Management Centre, Mumbai, India, in September 1998. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
DANA MITRA LINGKUNGAN {Friends of the Environment Fund} Pusat Niaga Duta Mas Fatmawati, Blok B1/12 Jl. RS. Fatmawati 39, Jakarta 12150 - INDONESIA Telp. : (62-21) 724 8884, 724 8885 | Fax. : (62-21) 724 8883 Email : [EMAIL PROTECTED] | URL# http://www.dml.or.id Konperensi KMB 2001 @ http://kmb2001.dml.or.id FORLINK @ http://forlink.dml.or.id Bursa Limbah @ http://w2p.dml.or.id Forum KMB Indonesia @ http://forumkmb.dml.or.id Join Milis PB, kirim email ke mailto:[EMAIL PROTECTED] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -- ~~~~~~ PRODUKSI BERSIH (PB) MAILING LIST ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Posting = [EMAIL PROTECTED] Berhenti = Kirim Email kosong ke mailto:[EMAIL PROTECTED] Berlangganan = Kirim Email kosong ke mailto:[EMAIL PROTECTED] Administrator = mailto:[EMAIL PROTECTED] Arsip = http://www.mail-archive.com/[email protected]/ FORLINK @ http://www.forlink.dml.or.id Environmental News @ http://forlink.dml.or.id/e-news/ Forum KMB Indonesia @ http://www.forumkmb.dml.or.id Bursa Limbah Indonesia @ http://www.w2p.dml.or.id ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
