of the dewatered sludge thermal utilization in cokemaking process
Wasielewski R., Sobolewski A.,
Kosewska M., Wróbelska K.
Investigations of coking process of coal mixtures with
addition of both the dewatered sewage sludge and coke dust from dry
process were carried out. The influence of quantity of these additives
on coke quality indices, the CRI (Coke Reactivity Index) and CSR (Coke
after Reaction), was analysed. This process decreases the quality of
because sewage sludge consist great amount of mineral matter. From the
technological point of view an acceptable amount of the dewatered
sewage sludge addition is up to 4% after
preparation with the coke dust.
The sewage sludge in thermal
The publication presents
the metod of mutual management of sewage sludge and carbon mud waste.
enabled the acquisition of the granulate having the parameters allowing
mutual management of both wastes in thermal utylization. The features
content of the received granulate allows to use it as a basic fuel or
addition for example: in power boiler. The introduction of the
received from the sewage sludge and carbon mud waste to producing
the solution not only to the problem of the management of arduous waste
sewage sludge and lers harmful carbon mud, but can also cause important
saving. The effect of the investigation was the granulate mixture.
of thismixture does not make any technical difficulties and may be
with minimal outlay.
Concept of technology of energy
effective utilization of waste products
Poskrobko S., £ach J.
The paper is devoted to the presentation of concept of investigations
directed to the elaboration of the technology which makes possible
effective utilization of industrial waste (i.e. biomass and polymer
waste) as a fuel with closely defined thermal properties and emission
rate of pollutants. In order to obtain low-condensed synthesis gas, in
frames of research we would like to verify burning, co-firing with hard
coal as well as gasification technologies. Beside high efficiency of
fuel chemical energy conversion into thermal energy, investigations in
real and laboratory's scale must estimate emission of pollutants.
Equilibrium Modeling Of The
Gasification Of Solid Wastes
is an attractive alternative for the thermal treatment of solid wastes.
number of possible applications of product gas allows gasification to
integrated with several industrial processes (production of
fuels, chemicals and hydrogen), as well as power generation systems. In
paper important physical and chemical characteristics of solid wastes
are summarized and compared with conventional fossil fuels, primarily
Main conversion processes for municipal solid wastes (MSW) are briefly
discussed. A non-stoichiometric equilibrium model is developed to
performance of an oxygen-blown MSW gasifier. The equilibrium
calorific value of product gas as a function of temperature, pressure
oxygen ratio are calculated. The predictions of the model show that
oxygen-blown gasification of MSW can produce a medium heating-value gas
suitable for both power generation and chemical synthesis.
Investigations of Birch and Alder
Bark Mixture Thermal Utilization in the Heating
Boiler Working in Unsteady Condition
The wooden waste thermal utilization study was performed. A mixture of
birch and alder bark from plywood factory was utilized in the boiler of
25 kW heat power and 70 l water capacity. The process was
performed in two steps: pyrolisis and combustion of wooden gas in the
nozzle. The boiler was working without heat storage and therefore
sometimes the boiler water temperature increased quickly above 80°C and
the fan supplying the air for combustion stopped and
started again when the temperature went down below 75°C. The
measurements were carried out during the whole time of thermal
utilization process including periods of low boiler water temperature
and low flame temperature of in the nozzle. In this unsteady condition
the value of the carbon monoxide concentration was too high and heat
efficiency value was below 50%. The following parameters were measured:
volume stream rate and temperature of boiler water, also heat quantity
obtained by boiler water, heat power (using ultrasonic heat meter),
flame temperature in the nozzle, temperature of flue gases, carbon
monoxide and nitric oxide concentrations, air excess rate of the flue
gases in the stack (using thermocouples and gas analyzer with
electrochemical cells). All these parameters were registered
manually every three minutes.
Of Mass Transport In Thermal Transformation Of Waste Plants Equipment
Jaworski T. J.
experiments dealing with mass transport on the forward and reciprocal
involving trace mass elements were presented in the paper.
Review of type and quantity of grease
and oil waste in Poland
Ferenc Z., Pikoń K.
In the article waste fat market in Poland has been analyzed. Quality
and quantity analyze has been made as well as evaluation of the total
quantity of waste fat produced in Poland. Analyzed shown in the article
include animal fat, waste fat remaining after frying processes and
post-refining fatty acids. All data was obtained for reliable sources
like annual reports of corporations producing waste fat. In the article
several remarks about reliability of sources of information about waste
management was made.
Wastes management proceeding undre the
National Master Plan of Municipal Waste Management regulations
Municipal wastes should not be treated as uncomfortable ballast, they
are the source of valuable materials which can be received and used
Special attention should be pased on municipal sector. National Master
Plan of Municipal Wastes Management is connected with recovery and
municipal wastes utylization, especially biodegradable wastes. In this
paper on the basis of data from different sources current states and
prespective of municipal wastes utilization between 2006 and 2014 were