Process Diagram

Band 5+: The diagram below shows how energy is produced from coal.

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The image is a diagram illustrating the process of how energy is produced from coal. The process starts with coal being transported by a truck, then goes to the furnace where it is mixed with oxygen. Flue gases and hot exhaust gases are produced, which lead to a heat recovery steam generator. Steam is created and goes to a steam turbine that powers a generator to produce electricity. In the purification phase, raw syngas is produced, which undergoes removal of CO2, mercury, and sulfur to create purified syngas. Slag is a byproduct of this process. Gas turbine is also part of the process to generate electricity.

Given the complexity of the image, the above description may not be entirely accurate.

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The diagram gives the process in which energy is produced from coal.

Overall, the process consists of several steps, commencing with the transportation of coal and ending with final product in electricity. The procedure is fairly complex and relies on the use of special industry machinery, providing a comprehensive overview of the various stages involved.

The process starts with the mixing coal and oxygen from factories in furnace supply. This combustion divides into two, raw signas which undergoes removal process which separates CO2 from purified syngas, which is then combining with slag from furnace.

In the next stage of the process, this concentration is commencing into gas turbine and generator to produce electricity. This process also can another various stage involved, after furnace machine hot and dangerous gasses heat recovery steam generator, where the chemical treatment takes place. In the subsequent step, the resulting product is steamed to steam turbine and generator to produce. The resulting product then undergoes to electricity.

Word Count: 161

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Overall Band Score

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Vocabulary Complexity:
C2 - Complex
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Grammar Mistakes: N/A

Vocabulary Repetition:

process: 6

which: 4

product: 3

electricity: 3

generator: 3

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Task Response

The report attempts to describe the process but contains several inaccuracies and omissions that detract from the task achievement. Key stages are misrepresented or unclear, such as the mixing of coal with oxygen, the handling of raw syngas and slag, and the role of the gas turbine. The description of the steam generation and turbine process is also confusing. To improve, focus on accurately describing each step in a logical sequence, using clear and precise language. Avoid introducing unclear or irrelevant details, and ensure the overall process is coherent and easy to follow.

Coherence & Cohesion

The report attempts to describe the process but the flow of information is often unclear and difficult to follow. The use of cohesive devices is limited and sometimes inaccurate, leading to confusion. For example, the description of the two main pathways (gas turbine and steam turbine) is not clearly separated or logically sequenced. Paragraphing is present but not effectively managed to guide the reader. To improve, focus on logically grouping the stages of the process and using clear sequencing words (e.g., 'first', 'next', 'then', 'finally') to show the order of steps. Ensure each paragraph covers a distinct part of the process.

Lexical Resource

The vocabulary used is adequate for the task but lacks range and precision. There are some attempts at using technical terms (e.g., 'furnace', 'syngas', 'turbine'), but these are not always used correctly or in the right context. Phrases like 'special industry machinery' and 'dangerous gasses' are imprecise. To improve, expand your range of topic-specific vocabulary and ensure terms are used accurately. Avoid vague language and aim for more specific and natural phrasing, such as 'heat recovery steam generator' instead of 'heat recovery steam generator' (which is correct but could be better integrated).

Grammatical Range & Accuracy

The report contains frequent grammatical errors and awkward phrasing that significantly affect clarity. Issues include incorrect verb forms (e.g., 'mixing coal and oxygen', 'is combining', 'is commencing'), missing articles, and unclear sentence structures. Punctuation is also inconsistent. To improve, focus on basic sentence construction, subject-verb agreement, and the correct use of tenses (present simple for processes). Practice writing clear, simple sentences before attempting more complex structures. Proofreading for common errors would also be beneficial.

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