ECONOMICAL-ENVIRONMENTAL EVALUATION OF SO3/SO2 ELIMINATION FROM ACID SULPHORIC PLANTS IN PETROCHEMICAL INDUSTRY

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ATABI F.; ATAEI A.; SHAFIZADEH SH.

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Journal: Journal of Environmental Studies Year:2009 | Volume:35 | Issue:50 Page(s): 105-118

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Title

ECONOMICAL-ENVIRONMENTAL EVALUATION OF SO3/SO2 ELIMINATION FROM ACID SULPHORIC PLANTS IN PETROCHEMICAL INDUSTRY

Author(s)

ATABI F. | ATAEI A. | SHAFIZADEH SH. | Issue Writer Certificate

Keywords

ELIMINATION OF SULFUR OXIDESQ3

ECONOMICALQ3

ENVIRONMENTAL EVALUATIONQ2

SULFURIC ACID PLANTQ3

PETROCHEMICAL INDUSTRYQ2

SCRUBBERQ3

Abstract

Sulfur oxides are among the main air pollutants with vast environmental and hygienic damages. Moreover, there are new standards set by governments and international organizations to confine the amount of SO2 emission from the factories' stacks. There are various methods for sulfur oxides removal from stacks. In the present study to control sulfur oxides of SULFURIC ACID PLANT two methods have been selected. The first method was desulphurization by ammoniac (Plant A) and the second one was a combination of the first method and dry scrubbing process with calcium hydroxide as the sorbent material (Plant B). Simulation of the systems was carried out through HYSYS v3.1 software. Considering the simulation results, 110 tones of sulfur oxides production were removed daily in the first method. Moreover, 89.66 tones of ammonium sulfate and ammonium sulfite was produced which are useful products. the Second method has two stages: at the first stage 95.64 tones/day of calcium sulfite were produced and in the second stage 7.755 tones/day of ammonium sulfate and ammonium sulfite were produced which are all among the useful products which can be sold or consumed in the same plant. Moreover, 110 tones/day of sulfur oxides were removed through the second method. The removal of sulfur oxides was nearly the same in both methods and they were compared to each other from the economic point of view. Therefore, economic index of these two methods were calculated through COMFAR III software with two presuppositions i.e. as in both plants sax pollutant is reduced equally (110 tones per day), the revenue gained by decrease in external costs is the same. Thus, we can ignore the revenue in both plants. Consequently, in the first assumption the external costs were ignored in order to calculate the actual profit or the pay back rate to the investor. In the second assumption in order to estimate the entire revenues gained by these environmental projects, the decrease of external costs made by removal of sax was considered as one of the revenues of the project. To compare the ECONOMICAL status of plants A and B, only the costs and revenue of these two units were taken into consideration and revenues of the other units of SULFURIC ACID PLANT were assumed similar. To calculate the tables and ECONOMICAL indexes of each plant Microsoft Excel and COMFAR III software which is designed by United Nations Industrial Development Organization (UNIDO) were utilized.

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APA: Copy

ATABI, F., ATAEI, A., & SHAFIZADEH, SH.. (2009). ECONOMICAL-ENVIRONMENTAL EVALUATION OF SO₃/SO₂ ELIMINATION FROM ACID SULPHORIC PLANTS IN PETROCHEMICAL INDUSTRY. JOURNAL OF ENVIRONMENTAL STUDIES, 35(50), 105-118. SID. https://sid.ir/paper/3108/en

Vancouver: Copy

ATABI F., ATAEI A., SHAFIZADEH SH.. ECONOMICAL-ENVIRONMENTAL EVALUATION OF SO₃/SO₂ ELIMINATION FROM ACID SULPHORIC PLANTS IN PETROCHEMICAL INDUSTRY. JOURNAL OF ENVIRONMENTAL STUDIES[Internet]. 2009;35(50):105-118. Available from: https://sid.ir/paper/3108/en

IEEE: Copy

F. ATABI, A. ATAEI, and SH. SHAFIZADEH, “ECONOMICAL-ENVIRONMENTAL EVALUATION OF SO₃/SO₂ ELIMINATION FROM ACID SULPHORIC PLANTS IN PETROCHEMICAL INDUSTRY,” JOURNAL OF ENVIRONMENTAL STUDIES, vol. 35, no. 50, pp. 105–118, 2009, [Online]. Available: https://sid.ir/paper/3108/en

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