I need a safety report for a bioethanol plant and here is there which you can have information about it: Coates Chemicals is an international chemical manufacturing company headquartered in Nottingham. It is diversified into a variety of sectors including heavy chemicals, food and beverage, oil and gas and pharmaceuticals, With the introduction of E10 fuel in the UK the company is now looking to develop its interests in fuels by constructing a bio-ethanol plant to produce ethanol fuel from glucose. Initial feasibility studies suggest that a 10,000 tpa plant would be economically viable at the current market price for ethanol. We now require a Front End Engineering Design package to develop a ±30% cost estimate for the plant for which a greenfield site has been selected near Newark adjacent to the River Trent. A mains water supply is available. An outline process schematic is attached. Coates Chemicals is committed to the sustainable development of its business, and is accountable to its shareholders in this regard. As part of this aim the company has committed to the following business-wide objectives by 2025: • Reduce energy and water consumption by 20% • Reduce CO2 emissions from manufacturing and processing sites by 20% • Achieve zero waste to landfill • Achieve zero harm to all employees and contractors on our sites • We are an ethical business and expect high standards from our supply chain Emissions from the site are included within the European Emissions Trading Scheme, and subject to the UK Carbon Price Floor. 2 PRODUCTION PROCESS Bioethanol will be produced from a bulk glucose solution which will be prepared by others and delivered to the production plant battery limit by pipe from the adjacent sugar refinery. The production plant shall be comprised of: 1. Bulk glucose storage tank with capacity for five days operation of the plant and pumped transfer and dilution to the fermentation reactors. 2. Four continuous fermentation reactors operating in parallel where the glucose solution is mixed with yeast (Saccharomyces triomagii). Yeast is a facultative organism. In an aerobic environment, yeast converts sugars into carbon dioxide and water: in an anaerobic environment, it converts glucose into carbon dioxide, ethanol and yeast cells as follows: 1.19C6H12O6 → 2C2H5OH + 2CO2 + 0.064C18H34O18 H = -136kJ Where C18H34O18 represents yeast cells Reaction rate constant: 0.07h-1 . It is important to exclude oxygen from the fermentation process, to which end a blanket of carbon dioxide at 50mbarg will be maintained in the reactor and vented via a vent condenser to minimise ethanol loss. Design Brief for 2048 Chemical Process Design and Control-Bioethanol plantPage 3 of 5 28/01/2022 3. A centrifuge to separate the yeast biomass from the reaction liquor and produce a solids slurry stream for recycle to the reactor(s) to maintain the suspended yeast concentration in the fermenter. Surplus yeast shall be removed either continuously or intermittently from the recycle stream. 4. A distillation column to produce a distillate of ethanol for further continuous purification by others. Fermentation produces surplus yeast which will be processed into animal feed by others. Bottoms from the distillation (stillage) shall be disposed of off-site by others. Wastewater shall be discharged to the site wastewater treatment plant (by others).
