Process Diagram

Band 7+: the diagram below shows how one type of coal is used to product electricity. summarize the information by selecting and reporting the main features, and make comparisons where relevant.

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Image for topic: the diagram below shows how one type of coal is used to product electricity. summarize the information by selecting and reporting the main features, and make comparisons where relevant.

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The image outlines a coal-to-electricity conversion process: coal is fed into a crusher, resulting in smaller particles; these particles are transferred to a gasifier; heat is applied in the gasifier, generating gas and waste heat; the gas undergoes cooling, leading to waste heat production; the cooled gas proceeds to a cleaning unit; post-cleaning, the gas enters a gas power plant; electricity is generated in the power plant; waste heat is expelled during electricity generation.

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

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Note: Both the topic and the answer were created by one of our users.

The process provides information about the steps needed to produce electricity using one type of coal. Overall, the procedure consists of three main phases, including supplying coal from factories, the gasification process and the process of converting to electricity through a gas power plant.

In the first stage, coal dug up from the mines is exported to a crusher, grinding them into smaller shapes to be stocked up and fit in trucks. These trucks then deliver those materials to other factories for subsequent processes.

The second phase being gasification. In these dedicated facilities, the small pieces of coal are gasified using heat, which produces a large emission of gas. After being gasified, these materials have to undergo a cooling stage, releasing excess heat. Following the cooling stage, the material employs a cleaning phase.

The third stage begins with entering a gas power plant, generating waste heat. This process allows the freshly made materials to transform into electricity, which then be distributed to residents and industrial factories for consumption.

Word Count: 168

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Overall Band Score

(+/- 0.5)

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

Vocabulary Repetition:

process: 4

stage: 4

electricity: 3

factories: 3

these: 3

materials: 3

Try using synonyms for the above words

Task Response

The report provides a clear overview of the process and covers the main stages: coal preparation, gasification, and electricity generation. It includes relevant details about crushing, gasification, cooling, cleaning, and power generation. However, there are some minor inaccuracies and omissions. For instance, the report mentions 'supplying coal from factories' and 'coal dug up from the mines' which are not explicitly in the visual description. Also, it omits the waste heat produced during cooling and electricity generation, which are mentioned in the description. The report could be improved by focusing more on the exact steps as shown and avoiding speculative details. Overall, the response is well-structured and addresses the task appropriately.

Coherence & Cohesion

The report is logically organized and the overall process is described in a clear sequence. However, the paragraphing could be improved: the first paragraph introduces the process, but the second paragraph mixes the initial stages with transportation, and the third paragraph covers gasification and cleaning, while the fourth covers the final stage. Consider using clearer paragraph breaks for each main stage. Additionally, some cohesive devices are used effectively (e.g., 'In the first stage', 'The second phase', 'The third stage'), but transitions between sentences could be smoother. For example, 'These trucks then deliver those materials to other factories for subsequent processes' could be linked more clearly to the next stage.

Lexical Resource

The vocabulary used is generally appropriate and shows some range (e.g., 'crusher', 'gasification', 'emission', 'cleaning phase'). However, there are some inaccuracies and awkward phrasings: 'grinding them into smaller shapes' could be more precise (e.g., 'crushed into smaller pieces'), 'stocked up and fit in trucks' is unclear, and 'the material employs a cleaning phase' is not idiomatic. To improve, use more precise technical terms and ensure collocations are natural (e.g., 'undergo a cleaning process' instead of 'employs a cleaning phase').

Grammatical Range & Accuracy

The report contains a mix of simple and complex structures, but there are several grammatical errors and awkward phrasings that affect clarity. For example, 'The second phase being gasification' is a fragment; it should be 'The second phase is gasification.' Also, 'which then be distributed' should be 'which is then distributed.' Additionally, 'the material employs a cleaning phase' is incorrect; it should be 'the gas undergoes a cleaning process.' Punctuation is mostly correct, but the errors in verb forms and sentence structure need attention. To improve, review subject-verb agreement and ensure each sentence has a clear main verb.

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