scholarly journals STUDI PENGARUH KONSENTRASI UMPAN GLISEROL PADA PROSES PEMURNIAN TRIASETIN BERBASIS CHEMCAD

2020 ◽  
Vol 4 (1) ◽  
pp. 12
Author(s):  
Nurhaning Ilmika Nugraheny ◽  
Ade Sonya Suryandari
Keyword(s):  
Feed Tank

Gliserol merupakan produk samping dari biodiesel yang dihasilkan dari proses transesterifikasi. Melalui reaksi esterifikasi gliserol dengan asam asetat akan membentuk triasetin. Triasetin merupakan bahan baku terbarukan serta ramah lingkungan yang dapat meningkatkan nilai oktan dan anti-knocking pada mesin mobil. Gliserol merupakan bahan baku utama yang dapat mempengaruhi kemurnian produk triasetin. Pengaruh konsetrasi umpan gliserol dalam penelitian ini bertujuan untuk meningkatkan kemurnian triasetin. Kemurnian produk triasetin minimal 99,8% di tetapkan dalam penelitian ini. Untuk mendapatkan triasetin dengan kemurnian dan jumlah yang tinggi dapat dilakukan dengan mempertimbangkan konsentrasi umpan gliserol pada simulasi ChemCAD. Simulasi dilakukan dengan mengutamakan penentuan konsentrasi gliserol pada aliran feed tank dengan melakukan trial mulai konsentrasi 90%. Hasil yang di dapatkan semakin tinggi konsentrasi gliserol akan dihasilkan jumlah produk triasetin yang semakin banyak, namun semakin tinggi konsentrasi gliserol akan di dapatkan produk triasetin dengan kemurnian rendah. Sehingga dari simulasi yang telah dilakukan konsentrasi gliserol optimum adalah 99% dan jumlah produk triasetin sebesar 2339 kg/jam dengan kemurnian 99,94%. Kata Kunci : ChemCAD, Feed Tank, Gliserol, Triasetin 

Membrane module with a feed tank for fine purification of gases

2008 ◽  
Vol 42 (4) ◽  
pp. 398-403 ◽  
Author(s):  
V. M. Vorotyntsev ◽  
P. N. Drozdov ◽  
I. V. Vorotyntsev ◽  
S. S. Balabanov
Keyword(s):  
Membrane Module ◽  
Feed Tank ◽  
Fine Purification ◽  
Purification Of Gases

scholarly journals Risk-Sensitive Reinforcement Learning Applied to Control under Constraints

2005 ◽  
Vol 24 ◽  
pp. 81-108 ◽  
Author(s):  
P. Geibel ◽  
F. Wysotzki
Keyword(s):  
Reinforcement Learning ◽  
Value Function ◽  
Learning Algorithm ◽  
Optimal Solution ◽  
Feed Tank ◽  
Model Free ◽  
Constrained Problem ◽  
Risk Sensitive ◽  
Markov Decision ◽  
The Value Function

In this paper, we consider Markov Decision Processes (MDPs) with error states. Error states are those states entering which is undesirable or dangerous. We define the risk with respect to a policy as the probability of entering such a state when the policy is pursued. We consider the problem of finding good policies whose risk is smaller than some user-specified threshold, and formalize it as a constrained MDP with two criteria. The first criterion corresponds to the value function originally given. We will show that the risk can be formulated as a second criterion function based on a cumulative return, whose definition is independent of the original value function. We present a model free, heuristic reinforcement learning algorithm that aims at finding good deterministic policies. It is based on weighting the original value function and the risk. The weight parameter is adapted in order to find a feasible solution for the constrained problem that has a good performance with respect to the value function. The algorithm was successfully applied to the control of a feed tank with stochastic inflows that lies upstream of a distillation column. This control task was originally formulated as an optimal control problem with chance constraints, and it was solved under certain assumptions on the model to obtain an optimal solution. The power of our learning algorithm is that it can be used even when some of these restrictive assumptions are relaxed.

Development and trial manufacture of water washing/high reflective paint spraying robot for concentrated feed tank

2019 ◽  
Vol 2019 (0) ◽  
pp. OS0221
Author(s):  
Taichi YAMASAKI ◽  
Masaki KATAOKA ◽  
Hideaki MURAKOSO ◽  
Hidenori OGIHARA ◽  
Ryuusuke KAWAMURA
Keyword(s):  
Feed Tank ◽  
Water Washing

scholarly journals Performance Evaluation and Kinetic Analysis of Photocatalytic Membrane Reactor in Wastewater Treatment

Membranes ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 276
Author(s):  
Zeyad Zeitoun ◽  
Ahmed H. El-Shazly ◽  
Shaaban Nosier ◽  
Mohamed R. Elmarghany ◽  
Mohamed S. Salem ◽  
...  
Keyword(s):  
Kinetic Analysis ◽  
Membrane Reactor ◽  
Membrane Distillation ◽  
Pseudo First Order Reaction ◽  
Pvdf Membrane ◽  
Feed Tank ◽  
Photocatalytic Reactor ◽  
Two Phases ◽  
Membrane Cell ◽  
Photocatalytic Membrane Reactor

The objectives of the current study are to assess and compare the performance of a developed photocatalytic membrane reactor (PMR) in treating industrial waste (e.g., organic dye waste) against membrane distillation. The current PMR is composed of a feed tank, which is a continuous stirred photocatalytic reactor containing slurry Titanium dioxide (TiO2) particles that are activated by using ultraviolet lamp irradiation at a wavelength of 365 nm, and a poly-vinylidene flouride (PVDF) membrane cell. The experimental setup was designed in a flexible way to enable both separate and integrated investigations of the photocatalytic reactor and the membrane, separately and simultaneously. The experimental work was divided into two phases. Firstly, the PVDF membrane was fabricated and characterized to examine its morphology, surface charge, and hydrophobicity by using a scanning electron microscope, surface zeta potential, and contact angle tests, respectively. Secondly, the effects of using different concentrations of the TiO2 photocatalyst and feed (e.g., dye concentration) were examined. It is found that the PMR can achieve almost 100% dye removal and pure permeate is obtained at certain conditions. Additionally, a kinetic analysis was performed and revealed that the photocatalytic degradation of dye follows a pseudo-first-order reaction.

scholarly journals Statistical Methods and Tools for Hanford Staged Feed Tank Sampling

2013 ◽  
Author(s):  
Matthew S. Fountain ◽  
Robert T. Brigantic ◽  
Reid A. Peterson
Keyword(s):  
Statistical Methods ◽  
Feed Tank

scholarly journals Feed tank transfer requirements

1998 ◽  
Author(s):  
J.R. Freeman-Pollard
Keyword(s):  
Feed Tank

A Preliminary Heat-Balance Computer Program Conforming to SNAME T&R Bulletin 3-11

1980 ◽  
Vol 17 (02) ◽  
pp. 131-162
Author(s):  
Michael G. Parsons ◽  
Thomas L. LaGuardia
Keyword(s):  
Computer Program ◽  
Heat Balance ◽  
Exhaust System ◽  
Steam Power ◽  
Feed Tank ◽  
Commercial Practice ◽  
Batch Type ◽  
Steam Plant ◽  
The Heat Balance ◽  
Selection Of

This paper presents a FORTRAN IV batch-type computer program for the heat-balance calculation of a nonreheat marine steam plant. The program is in conformance with the commercial practice standards presented in SNAME Technical and Research Bulletin 3–11 "Marine Steam Power Plant Heat Balance Practices." The program treats the preliminary design heat-balance problem where feed heater outlet temperatures can be specified prior to the selection of specific heat exchanger characteristics. The system design includes a realistic auxiliary exhaust system utilizing auxiliary exhaust, bleed, augment, and unloading as available or necessary or both. The system must include a deaerating feed tank and may include up to two low-pressure feed heaters and up to three high-pressure feed heaters. The program is designed so that further extension and adaptation to special needs can be easily accomplished. Program design results in a minimization of input data and very efficient running times. A verification example is presented. User's Instructions, Programmer's Documentation, and a listing are included as Appendices.

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