Functional diagram of formalin production unit automation

Contents

INTRODUCTION

1 PROCESS DESCRIPTION OF FORMALIN PRODUCTION UNIT

2 DEVELOPMENT OF FUNCTIONAL DIAGRAM OF AUTOMATION

2.1 Selection and justification of control and control parameters

2.2 Selection and justification of alarm and interlocking parameters

2.3 Selection and justification of control and control means

2.4 Select Programmable Logic Controller

2.5 Control System Software

2.6 Automation Installation Tools

CONCLUSION

LIST OF SOURCES USED

Introduction

A process is a set of operations for the extraction or processing of raw materials into semi-finished products or finished products and forms the basis of any production process. Each process can be divided into a certain number of typical process steps and is presented in the form of a process diagram, in which the production method is described in the form of a sequential description of the operations taking place in the corresponding equipment. A modern process cannot be imagined without automatic control systems. With the correct application of such systems, optimal operating parameters can be achieved, both for a certain unit and for the whole process

Currently, the main consumer of formaldehyde is the synthetic resin industry: the production of phenol-formaldehyde, urea-formaldehyde resins; resins modified by formaldehyde treatment; low-solubility varnishes, coatings, adhesives, layered plastics.

The most common product was a product containing 35-37% formaldehyde and 6-11% methanol, called formalin. The formula of formalin was formed historically, under the influence of the following factors. First, methanol and water accompany formaldehyde at the stage of its production by the most common method (methanol - raw material, water - by-product and absorbent). Secondly, the solution of said composition at positive temperatures is quite stable to polymer precipitation and can be stored or transported indefinitely. Thirdly, in the form of a water-methanol solution, formaldehyde can be used in most industrial syntheses, as well as in direct use and, finally, fourth, it is formalin that is obtained by oxidative conversion of methanol in the presence of metal catalysts in the absorption step of the contact gas.

Management System Software

Citect SCADA is a software product that is a monitoring, control and data collection system (SCADA - Supervision, Control And Data Acquisition). This system is designed for process control. RTSoft is the official distributor of Citect software products.

Citect SCADA is a choice of many of the world's most renowned companies that require a scalable, flexible, and reliable solution.

The Citect SCADA SCADA system was designed and developed as a means of implementing all the requirements of the enterprise in the form of a single integrated system. Citect SCADA contains all necessary components that eliminate both the need for additional software and data fragmentation. The first Citect package for Windows, installed in 1992, raised the bar for PC-based SCDONBASS systems to a new level of performance - 33,000 discrete input points, 16,000 analog input points, 4,000 trends, 50 operator stations, redundancy in the style of distributed DCSs, a common database, configuration from any computer. With these characteristics, Citect customers can always be sure that Citect can cope with any task, regardless of the size of the system.

Further development of Citect was built on this powerful foundation. The developers of the package strive to give the user real opportunities to further expand the functional characteristics of the product, simplify its application, increase performance and reduce the time to develop application systems. The high degree of automation of operations, functional completeness, quality control and testing guarantee the maximum possible reliability of Citect, which thanks to this can be used in various critical applications of nuclear power, aviation and other fields.

Conclusion

In the homework, a functional diagram of automation of the formalin production unit was developed, automation tools were selected, automatic control and control, alarm and blocking parameters were selected, which will further ensure the normal course of the technological mode, safe, accident-free and efficient operation of the equipment.

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